Marketer's Space: Proven tips to improve open rates – Part III

Marketer's Space: Proven tips to improve open rates – Part III

Hello Marketers!

Welcome back to another post in Marketer's Space!

This is the final post in the "open rate series". In the first and second parts, we discussed topics ranging from sender domains to pre-headers—but we're not done yet. A few more important topics await you in this post. Let's dive right in.

Personalized content

Personalization is important in email marketing—but it doesn't end simply with addressing your contacts by their first names. It's much more than that. You have to tailor your entire campaign—from design to content—in order for it to click with them.

Here's what the path of personalization looks like:

 
  • Request contacts' preferences after they sign up. Zoho Campaigns automatically sends a double opt-in form after contacts sign up (if enabled) in which they can update their preferences and topics.
  • Send campaigns to these contacts, as they're the ones who've shown real interest in what you're offering.
  • Track metrics like opens, product views, and link clicks. Zoho Campaigns' Reports module is your best friend.
  • Segment contacts based on these behaviors and send targeted campaigns to these segments.
  • Further refine your sending practices by creating content variations dynamically, determining the frequency at which they want to receive campaigns, and optimal send times.
 
Dynamic content

Dynamic content is another form of personalization, where the content changes dynamically depending on who opens and views the campaigns.

Let's say an ecommerce brand runs a Diwali sale using an email campaign.

Based on past behavior, electronics shoppers see gadget deals, fashion shoppers see festive wear, and inactive users see a comeback offer—all within the same email. Images, headlines, offers, and CTAs automatically change for each contact.

The marketer sends one campaign, but every recipient sees content tailored to their interests, which make the emails feel personal and relevant.

The Dynamic Content element in Zoho Campaigns' templates does all the heavy lifting for you.



It's effortless to set up; you just need to drag-drop the elment's variant, set the conditions, and see the magic.

Check out our ebook on personalization for more details.

Multi-device and multi-client responsiveness

These days, you may look at your mobile phone more than your laptop or desktop. Accordingly, as a marketer, you should design your campaigns so that they're responsive across multiple device types, like laptops, mobile phones, and tablets. Here are some quick tips for creating responsive campaigns for multiple devices and multiple email clients (like Gmail, Outlook, and Yahoo).

Imagine your contacts open your campaigns but find images loading too slowly, cramped content, unclickable CTAs, or broken layouts when viewing via their phones. They won't open your campaigns again if these issues persist—which leads to poor open rates.

Here are some ways you can design your campaigns to be responsive across different devices and email clients:
  • Make mobile your priority: Use single-column layouts, readable font sizes, and tap-friendly buttons to ensure smooth mobile experiences. Prevent any stray taps from your contacts by leaving sizable space surrounding your buttons.
  • Always preview: Use Zoho Campaigns' built-in desktop and mobile previews to catch layout issues before sending. Click each campaign's magnifier button (in the Content section) to preview for desktop and mobile.



  • Send test emails: Open test emails in real inboxes (Gmail, Outlook, Yahoo) across both laptop and mobile devices. Create test accounts in these email clients and send campaigns to yourself.
  • Pay extra attention to Outlook: Outlook handles HTML differently and often needs special testing.
  • Granular checks: Validate links, images, alt text, and dark mode visibility before hitting send. Don't upload high resolution images, as it'll increase your emails' load times when your contacts first open them.
  • 60:40 ratio: Generally, maintaining a ratio of 60% text and 40% images in your campaigns is recommended. While this ratio doesn't have a direct contribution to open rates, it does improve loading speeds, accessibility, and inbox trust—all of which do contribute directly to open rates.
Multi-device testing makes sure your campaigns works across varying screen sizes, while multi-client testing ensures they render correctly across different email clients. Both are essential, as different email clients interpret HTML differently.

A/B testing

A/B testing helps you make smarter email decisions by letting actual contacts vote without realizing it. Instead of guessing about what works, you can create two versions of the same campaign that differ in one key way (such as their subject line, CTA, or send time) and then send them to different (but equal) portions of your contacts. The version that gets more opens or clicks is the winner—and you can then send it to your remaining contacts.

For example, let's say Patricia from Zylker Fashions is launching a weekend sale. Version A uses the subject line "Weekend sale is live", while Version B says "Your weekend savings start now". She sends both to roughly 10% of her list. After a few hours, Version B gets higher opens, so she automatically sends it to the remaining 80%. Over time, repeating such tests helps her consistently improve engagement and results.

Remember that your target contacts are often based on demographics, geography, and behavior, so test results from one group may not reflect the reactions of another.



Zoho Campaigns has a specific A/B Testing campaign feature you can use when you create email campaigns.

Send-time optimization

Let's say you're based in the US and have customers all over the globe. You want to send a campaign to your UK contacts, but you don't want to send it in the middle of the night; it might put them off. More often than not, these emails will go unopened. Instead you should schedule it to arrive at a specific time—in their specific time zone—when they're most likely to open it.

Zoho Campaigns offers this functionality. After designing your campaign with our template builder, you're ready to send it. You can choose between Send Immediately and Send Later. Upon choosing the latter, you can select either the Recipients' Time Zone and Recipients' Optimal Open Time, among other options.



The recipient's time zones are determined by whatever contact data you have, such as their country. Optimal open times, on the other hand, are based on the recipients' past engagement histories, such as when they usually open emails.

With that, we've come to the end of this three-part series.

Improving open rates is all about being consistent. We covered a wide range of topics, from sender domains and subject lines to pre-headers, personalization, dynamic content, testing, and send-time optimization.

Until next time. Happy marketing!


Kind regards,
Sai Prashanth
User Education
Zoho Campaigns

    Access your files securely from anywhere


          All-in-one knowledge management and training platform for your employees and customers.






                                Zoho Developer Community




                                                      • Desk Community Learning Series


                                                      • Digest


                                                      • Functions


                                                      • Meetups


                                                      • Kbase


                                                      • Resources


                                                      • Glossary


                                                      • Desk Marketplace


                                                      • MVP Corner


                                                      • Word of the Day


                                                      • Ask the Experts





                                                                Manage your brands on social media



                                                                      Zoho TeamInbox Resources



                                                                          Zoho CRM Plus Resources

                                                                            Zoho Books Resources


                                                                              Zoho Subscriptions Resources

                                                                                Zoho Projects Resources


                                                                                  Zoho Sprints Resources


                                                                                    Qntrl Resources


                                                                                      Zoho Creator Resources



                                                                                          Zoho CRM Resources

                                                                                          • CRM Community Learning Series

                                                                                            CRM Community Learning Series


                                                                                          • Kaizen

                                                                                            Kaizen

                                                                                          • Functions

                                                                                            Functions

                                                                                          • Meetups

                                                                                            Meetups

                                                                                          • Kbase

                                                                                            Kbase

                                                                                          • Resources

                                                                                            Resources

                                                                                          • Digest

                                                                                            Digest

                                                                                          • CRM Marketplace

                                                                                            CRM Marketplace

                                                                                          • MVP Corner

                                                                                            MVP Corner









                                                                                              Design. Discuss. Deliver.

                                                                                              Create visually engaging stories with Zoho Show.

                                                                                              Get Started Now


                                                                                                Zoho Show Resources

                                                                                                  Zoho Writer

                                                                                                  Get Started. Write Away!

                                                                                                  Writer is a powerful online word processor, designed for collaborative work.

                                                                                                    Zoho CRM コンテンツ





                                                                                                      Nederlandse Hulpbronnen


                                                                                                          ご検討中の方





                                                                                                                    • Recent Topics

                                                                                                                    • Import and Export of website.

                                                                                                                      Hi, i have raised this ticket regarding challenges i am facing while importing a website on zoho sites. I have created my website on Squarespace and now i want to move it to zoho sites so i want to know what i am supposed to do whats the correct step
                                                                                                                    • Add multiple users to a task

                                                                                                                      When I´m assigning a task it is almost always related to more than one person. Practical situation: When a client request some improvement the related department opens the task with the situation and people related to it as the client itself, the salesman
                                                                                                                    • Important update on our transition to the new video platform framework

                                                                                                                      As part of our ongoing platform changes, users in select regions, including the United States and other supported data center locations, have been migrated to our new video platform framework. Due to this migration, some participants may notice changes
                                                                                                                    • Deleted User Emails

                                                                                                                      I need to delete a user as I need to re-use their license, but I'd like to keep all their emails that are attached to various contacts in the CRM. Their emails are hosted externally on an M365 license. Anyone any idea how best to engineer this? TIA
                                                                                                                    • #14 Get Paid Without Spending Time on Manual Follow-ups

                                                                                                                      It's the end of the month. Payroll is due next week. A software subscription is about to renew. A vendor payment is waiting for approval. On paper, the business is doing great. Projects are getting completed. Customers are happy. Invoices have already
                                                                                                                    • Client Script | Update - Client Script Support For Custom Buttons

                                                                                                                      Hello everyone! We are excited to announce one of the most requested features - Client Script support for Custom Buttons. This enhancement lets you run custom logic on button actions, giving you greater flexibility and control over your user interactions.
                                                                                                                    • Function #11: Apply unused credits automatically to invoices

                                                                                                                      Today, we bring you a custom function that automatically applies unused credits from excess payments, credit notes, and retainer payments to an invoice when it is created. Prerequisites: Create a Connection named "zbooks" to successfully execute the function.
                                                                                                                    • Add spaces to input format

                                                                                                                      In Zoho Inovices, I am trying to do a custom input format for a custom field. I have tried a few variations, but this is my most recent: ^[a-z][A-Z][0-9][,][-][_][:][ ]$ In this field, I will be entering different alphanumeric information, depending on
                                                                                                                    • Zoho CRM Deal API returning null pipeline in case of default pipeline

                                                                                                                      Hey team, We are writing to report an issue with the Deals module pipeline API behavior that we believe stems from how the default (Standard) pipeline is handled when no custom pipelines have been configured. When the "Manage Pipelines" page under CRM
                                                                                                                    • Quebec Canada Tax GST and QST

                                                                                                                      Hello Expert, Whenever we I create invoice for Quebec, Canada, it calculating wrong tax amount, can you please validate Attached the screenshot, which is calculating wrong tax amount on QST
                                                                                                                    • Function #1: Convert an accepted Estimate to Sales Order automatically in Zoho Books

                                                                                                                      As you’re aware, Zoho Books provides a default option to have the estimates automatically converted to invoices once your customer accepts them. Many of you wanted a similar option for sales orders, so here’s a workflow that converts accepted estimates
                                                                                                                    • Facturation électronique 2026 - obligation dès le 1er septembre 2026

                                                                                                                      Bonjour, Je me permets de réagir à divers posts publiés ici et là concernant le projet de E-Invoicing, dans le cadre de la facturation électronique prévue très prochainement. Dans le cadre du passage à la facturation électronique pour les entreprises,
                                                                                                                    • Adding Taxes to paid consultations in Zoho Bookings

                                                                                                                      I created a 'paid' consultation under Zoho Booking and integrated it with payment gateways for online/instant payment before a booking is done. How can I add 'taxes' to the price of consultation? I can add taxes to other Zoho apps (liks Books, Checkout,
                                                                                                                    • What's New in Zoho Forms

                                                                                                                      Hey there, We've been heads-down shipping this quarter. Because every update we ship is about making your forms do more, with less effort from you. This quarter too, we expanded what Zoho Forms can do. Here's everything that shipped. Spotlight Forms Some
                                                                                                                    • Zoho Creator and Bluetooth Beacons?

                                                                                                                      Hi all, Has anyone developed anything in Zoho Creator that leverages Bluetooth? Specifically to detect bluetooth beacons (iBeacon, Eddystone, etc.)? Thank you, Josh
                                                                                                                    • Zoho Books | Product updates | June 2026

                                                                                                                      Hello users, Welcome to this month's roundup of what's new in Zoho Books! We have an exciting line-up this time. The highlight is the launch of the all-new France Edition with full ISCA compliance. We're also introducing features such as Layout Rules
                                                                                                                    • API to post drafts for social media

                                                                                                                      I we want to post draft posts to our zoho social account and then approve and schedule them within Zoho social. is this possible with for example: https://apis.zoho.com/social/v2/post TIA Jon
                                                                                                                    • What's New in Zoho Inventory | April & May 2026

                                                                                                                      Hello users, We're excited to roll out the latest Zoho Inventory updates for April and May 2026. These enhancements are designed to make your daily operations smoother and more efficient, from advanced inventory management and flexible pricing to automated
                                                                                                                    • Bullet Charts Stuck Loading Without Data

                                                                                                                      I have a dashboard with some widgets in bullet chart format, but some of them do not have data. Since there is no data, they keep loading indefinitely instead of displaying “No Data,” as happens with the percentage widget next to them. This issue prevents
                                                                                                                    • How to get Monday as 1st day of the week?

                                                                                                                      Hi, The first day of the week is Sunday in Zoho Creator calendar.So it is hardly usable as in Europe the 1st of the week is always Monday. How can I get Monday as 1st day of the week? Best regards, Chris
                                                                                                                    • Shall we play a game?

                                                                                                                      Presenting the very first game created using ZOHO Creator: Tic-Tac-Toe (or noughts and crosses) I made this to challenge myself and employ some of the new features of ZOHO Creator. I must admit that the code is very literal and not too elegant. There are plans to improve on the machine AI and streamline the code over time. Currently the code makes extensive use of functions for the machine "AI" - there are 12 of these.   The machine AI can be tricked, so to counteract that I made it exceedingly arrogant
                                                                                                                    • Check printing alignments always changes

                                                                                                                      Hello, We have a frustrating problem with printing checks. We use Quickbooks voucher checks, which works okay for us. The problem is the printing alignment for the check's "Date, Pay to the Order of, Amount, and Amount in Words" changes every time we
                                                                                                                    • name change of company in same GSTIN registration . how to retain historical company name for past transactions?

                                                                                                                      hello I have recently change my company name from BHANU DIAM to BHANUMATI IMPEX in same GSTIN registration number While i have update the company name in profile name that change all my historic data like sale invoices and purchase bill , i would like
                                                                                                                    • iOS Books app shows filtered view after changing to All sales orders

                                                                                                                      My boss often checks sales orders on his iPhone. The app is mostly working fine, but there's an ongoing issue: When switching between different filters (also called custom views on the web), going back to All doesn't often work. It typically gets stuck
                                                                                                                    • Recurring Invoices

                                                                                                                      I'm looking to set up recurring invoices on a monthly basis, using GoCardless as a payment gateway. I've done this successfully, however there's a big problem with the Invoice Date and Due Date. We prefer to provide sufficient notice of collection (10
                                                                                                                    • Layout Rules Don't Apply To Blueprints

                                                                                                                      Hi Zoho the conditional layout rules for fields and making fields required don't work well with with Blueprints if those same fields are called DURING a Blueprint. Example. I have field A that is used in layout rule. If value of field A is "1" it is supposed to show and make required field B. If the value to field A is "2" it is supposed to show and make required field C. Now I have a Blueprint that says when last stage moves to "Closed," during the transition, the agent must fill out field A. Now
                                                                                                                    • Ability to Use Both AND and OR When Creating Rules (Advanced Conditions)

                                                                                                                      I'd like to be able to use more complicated logic when setting up rules. E.g. in Zoho Mail, I can choose "Advanced conditions (AND/OR) to create a rule that can be applied to multiple subject lines from the same sender. But in Zoho TeamInbox, I will have
                                                                                                                    • How to record GST amount for Value of Service on Inward remittance charged by bank

                                                                                                                      Hi please advice I have a situation.    1. I have HDFC bank account 2. I have a customer who has done inward remittance for purcahses from overseas. 3. HDFC is showing Value of Service say $100 and GST @ 18%. 4. Value of Service is not charged. But  CGST
                                                                                                                    • Resources - Sort by rows consumed

                                                                                                                      Please add the ability to sort by the total rows consumed in the Resources section of Settings. I would like to see which table is consuming the most rows by sorting from high to low.
                                                                                                                    • Zoho Books - France

                                                                                                                      L’équipe de Zoho France reçoit régulièrement des questions sur la conformité de ses applications de finances (Zoho Books/ Zoho Invoice) pour le marché français. Voici quelques points pour clarifier la question : Zoho Books est un logiciel de comptabilité
                                                                                                                    • Editing a bundle

                                                                                                                      How can I edit a bundle?
                                                                                                                    • Approval escalation

                                                                                                                      Hi I would like to have an approval escalation if Approver 1 does not approve/reject a request with a certain SLA. Currently I have a status field that changes to "Pending approver 2 approval" after a certain time, however the challenge I am faced with
                                                                                                                    • Referral module for our Zoho People employees

                                                                                                                      I have been requested to create a user in Zoho Recruit for each Zoho People user to allow them to refer a candidate in Zoho Recruit. Only the interviewer and guest profiles are free. The use of a custom profile is on the paid basis. Any user linked to
                                                                                                                    • Conflicts on zoho project Tasks

                                                                                                                      Hi We want to use ZOHO Project for scheduling our technicians. We have maintenance contract with our customers. We schedule interventions on customer sites. So we created projects for each contract and task for interventions. So if a technician need to go to customer I create task and schedule them after depending of availibility. When I need to assign a date I use start Date and due date on the task. But I realized there is no conflict management. I called support and they told me it is not developped.
                                                                                                                    • Upcoming webinar : Build high-converting sales pipelines with Zoho LandingPage and Bigin

                                                                                                                      For small businesses, generating leads is only half the battle. The real challenge is staying organized, following up consistently, and turning those leads into customers. Join us for this webinar to learn how Zoho LandingPage and Bigin can help you create
                                                                                                                    • New UX Improvements in the Zoho Expense iOS and Android Apps

                                                                                                                      Hello users, We're excited to share the latest updates and enhancements we've made to the iOS and Android apps of Zoho Expense. These updates have been designed to make your day-to-day expense and travel management even simpler. Note: We will be rolling
                                                                                                                    • What's New in Zoho Billing | May 2026

                                                                                                                      We're back with another round of updates in Zoho Billing! This month brings new capabilities designed to give you more flexibility and control over your billing operations. From associating price lists with business locations, and including annexures
                                                                                                                    • ZOHO SURVEY to ZOHO CRM integration

                                                                                                                      I am trying to use the ZOHO SURVEY to ZOHO CRM integration but the integration won't allow me to choose a record layout and that means there is a erquired field that i cannot input, is there any way around this?
                                                                                                                    • Why don't Zia agents support file uploads?

                                                                                                                      I am trying to build a Zia Agent that allows uploading of a PDF file and uses the GLM5 model to process it and extract information. But agents.zoho.com has no way to enable file uploads on the agent. Additionally, GLM5 based agents keep outputting their
                                                                                                                    • Zoho Forms - Failed CRM Sync Improvement

                                                                                                                      I'd like to suggest an enhancement to the Zoho Forms and Zoho CRM integration. Currently, once a form entry has been submitted, there is no simple way to push that individual entry to CRM again if needed. Before anyone mentions it, I am aware that the
                                                                                                                    • Next Page