Important updates to Zoho CRM's email deliverability

Important updates to Zoho CRM's email deliverability

Last modified on: Jul 24, 2024
These enhancements are released for all users across all data centers.

Modified on: Oct 30, 2023
Organisations that are in the Enterprise and above editions of Zoho CRM, and have not authenticated their email-sending domains will have their newly created mass emails and other email notifications associated with newly created or edited automated processes (like workflows, blueprints, etc.) sent from email addresses connected to Zoho's own authenticated domains. This change has been rolled out to accounts across all data centres. Upon authenticating their domains, the emails tied to these processes will be sent from their own email addresses automatically.

Modified on: Oct 4, 2023
Organisations who are in the FreeStandard, and Professional editions of Zoho CRM, and have not authenticated their email-sending domains will have all their emails sent from email addresses connected to Zoho's own authenticated domains. This change has now been applied to accounts in all data centres. Once these accounts authenticate their domains, the emails will automatically be sent from their own email addresses.
Dear All,
 
We're thrilled to talk about the enhancements that are coming up to improve Zoho CRM's email deliverability, as well as the systems we have in place today to support our customers' email communications.
 
As you might know, our current systems help users send nearly 100 million emails every month via Zoho CRM, be it through features like workflow rules, mass emails, emails sent for meetings, 1-to-1 sales communication purposes and so on. We're looking to update these systems and make some in-product changes to ensure that customer emails have the best possible delivery rate without any bounces and that our email-sending IPs and domains have the best sender reputations.
 
We believe this is a crucial update to our email features, as improving sender reputation results in higher deliverability of our customers' emails, which in turn gives them high conversion rates in their business communications and sales pipelines. To help us achieve this, we're working to ensure that all emails that go out from Zoho CRM only do so from email addresses connected to authenticated domains.

What is domain authentication?

Our systems have to recognize that users actually own the domains connected to the email addresses from which they send emails. When users add the necessary SPF and DKIM files to their domain's DNS settings, their email-sending domains will be successfully authenticated.
 
Zoho CRM then provides this authentication information to recipients' inbox providers every time we send an email. By doing so, inbox providers like Gmail, and Outlook, can be confident that the emails they receive from Zoho CRM are really from whom the senders claim to be, and this improves our system's sender reputation. Conversely, by sending emails connected to non-authenticated domains, we fail to provide inbox providers with this confidence, which brings down our sender reputation.

How are these updates going to ensure domain authentication?

  1. Email addresses from public domains will automatically be re-formatted: Email addresses from public domains like Gmail, Yahoo, and Outlook will be automatically updated to Zoho CRM's own authenticated domains. For example, when a user sends emails using emailaddress@gmail.com via Zoho CRM, the email's recipients will see the emails in their inboxes as being sent from emailaddress.gmail.com@zohocrm-2380248-sdus09.com.

    We're making this change and disallowing the use of public email providers, as they are prone to the extreme scrutiny of inbox providers and have poor deliverability rates—thereby affecting our sender reputation. For instance, when rogue users sign up for Zoho CRM free trials using addresses from public email providers just to send spam emails through our systems, we will be able to act faster and stop these users, as the emails they send are routed from our authenticated domains and we can easily identify any bad actors damaging our sender reputation.

  2. Email addresses from non-authenticated domains will also be automatically re-formatted: We are mandating domain authentication for all email-sending domains. This means that even if users have been sending emails through non-authenticated email addresses so far, after this enhancement, their email addresses will automatically be re-formatted similarly to email addresses from public email providers—unless their domains are authenticated.

    For example, if users send emails from sales@zylker.com, recipients will see the emails in their inboxes as being sent from sales.zylker.com@zohocrm-2380248-sdus09.com, assuming zylker.com has not been authenticated.

    This mandate is to improve Zoho CRM's sender reputation and to meet the highest industry standards. As Zoho CRM uses a shared back-end infrastructure to send all of our user's emails, it's essential that customers with authenticated domains and healthy email-sending practices are protected from the damage to our infrastructure caused by accounts using non-authenticated domains to send emails.

    This is important to note unless all domains that are used to send emails from your Zoho CRM accounts are authenticated, this will affect your existing emails, workflows, and business communication that you may have currently set up.
Points to be noted:
  • The Email Authentication page (Setup > Channels > Email > Email Deliverability > Email Authentication) will display all the domains that are accessible within your account, determined by the email addresses found in both your active user's list and organizational email addresses under Available domains. Users should ensure that they have authenticated their email-sending domains from the list of available domains.
  • The mentioned email deliverability changes do not apply when users send emails through their configured mailbox or when an email relay server is set up for an account.

Release plan:

  • Recommended domain authentication and sender address change for non-authenticated domains have now been released for all new organizations who sign up for Zoho CRM.
  • For existing users who send or configure email notifications from inside Zoho CRM, we will soon have in-product reminders and alerts informing about these changes.
That's all about the enhancements. Let us know your thoughts and feedback in the comments below.


Thanks! 
Sohel

    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

                                                                                                                • Add Reauthentication Option for Zoho Bug Tracker Integration in Zoho Desk

                                                                                                                  Hello Zoho Desk Team, We hope you're doing well. We would like to request an enhancement to the Zoho Bug Tracker integration within Zoho Desk. Current Limitation: At the moment, there is no option to reauthenticate the Zoho Bug Tracker integration in
                                                                                                                • Newby Questions

                                                                                                                  Q1. The top bar of Zoho Books has a "Search in Banking (/) " field. What is the proper use of this text box? - Searching for Amazon for example has no results but there are transactions. - Is the search case sensitive? - Are regular expressions allowed?
                                                                                                                • Transaction Rule Matching

                                                                                                                  Q1. Is there a method to have the Transaction Rules applied across multiple Bank Accounts? Q2. To match "contains" text in Transaction Rules, is a wildcard or regular expression required? Is it case sensitive? Would searching for "issue" in the following
                                                                                                                • Newby Questions - Vendors, Customers, and Income vs. Other Income Clarifications

                                                                                                                  Q1. For Deposits, there does not seem to be an option for "Income". "Other Income" is an option however. What is the process to add the option to assign a deposit to type "Income"? Q2. In many cases Vendors and Customer are the same. Vendors may purchase
                                                                                                                • Introducing parent-child ticketing in Zoho Desk [Early access]

                                                                                                                  Hello Zoho Desk users! We have introduced the parent-child ticketing system to help customer service teams ensure efficient resolution of issues involving multiple, related tickets. You can now combine repetitive and interconnected tickets into parent-child
                                                                                                                • Three Zoho Billing Limitations Blocking Standard Subscription Operations

                                                                                                                  After working through Zoho Billing support for over a year on these three issues without resolution, we wanted to flag them to the broader community. We are curious whether other businesses are running into the same walls. 1. Cannot Prepone (Move Earlier)
                                                                                                                • Automation #3 - Auto-sync email attachments to tickets

                                                                                                                  This is a monthly series where we pick some common use cases that have been either discussed or most asked about in our community and explain how they can be achieved using one of the automation capabilities in Zoho Desk. Most of our customers use email
                                                                                                                • Can't add a sender adress from zoho campaigns

                                                                                                                  hi, I need to change the sender address for a campaign.  When i try to add it i get a message to say 'duplicated email address found while adding your sender address'.  This is the first campaign i'm sending so I don't understand why this message is displayed? Thanks Jane 
                                                                                                                • Using a custom single line External ID form as merge fields in templates

                                                                                                                  Hey everyone, We're looking to integrate a few external systems better with our Zoho CRM, and we had hoped to use external fields for this purpose. In this case, it would mean being able to use our own inoice system's invoice numbers are a direct id compatible
                                                                                                                • Introducing Workqueue: your all-in-one view to manage daily work

                                                                                                                  Hello all, We’re excited to introduce a major productivity boost to your CRM experience: Workqueue, a dynamic, all-in-one workspace that brings every important sales activity, approval, and follow-up right to your fingertips. What is Workqueue? Sales
                                                                                                                • Zoho CRM - Feature Request - Analytics Components Group By Week Alternative Formats

                                                                                                                  On the Zoho CRM Analytics Components, please consider adding an option to allow group by week format to be changed to other formats such as Week Commencing or Week Ending dates, rather than the current Week Number. This would provide improved usability
                                                                                                                • Dashboard target enhancements

                                                                                                                  Often individuals in IT are creating dashboards for their sales team. The ability to create a single dashboard that can be used by multiple people is key. A components for a dashboard have the ability to filter by logged in user which is great. However
                                                                                                                • Zoho Campaigns - Feature Request - Re-Send Existing Email Action in Automations/Journeys

                                                                                                                  Hi Zoho Campaigns and Zoho Marketing Automation teams, I would like to suggest a feature that would make building and managing complex automations significantly easier. The Feature Introduce a “Re-Send” or “Send Existing Email” action within Automations
                                                                                                                • Can I write a check in Zoho Books with no associated bill?

                                                                                                                  This currently does not seem possible, and I have a client that desperately needs this function if I am able to convert them with Quickbooks. Thank you in advance for your reply. 
                                                                                                                • ISO 3166-2 Compliant Country and Regions

                                                                                                                  Zoho should consider implementing ISO 3166-2 standards for countries and regions in address dropdowns. It adds a lot of noise in the data when items added programmatically conform to ISO 3166-2 (e.g., TX for Texas, CA for Canada, etc.), but the few items
                                                                                                                • US State abbreviations in Address fields

                                                                                                                  In regards to all Address fields within Zoho, Is there a way to change the State field to be the 2 letter abbreviation vs the full spelled out US State name? Example: "Washington" should be WA. I am able to type in the abbreviated state, but it's not
                                                                                                                • Zoho Booking - TIN vs ATIN & ITIN

                                                                                                                  Zoho Booking Vendors allows for TAX ID values of SSN, EIN, ATIN an ITIN. There is no option for TIN. What is the method to properly add TIN to the list of taxable values for companies? For reference: Social Security Numbers (SSN) Individual Taxpayer Identification
                                                                                                                • How to see Statement Details Shown in Unclassified Transactions in All Transactions?

                                                                                                                  All, The list of Unclassified Transactions show the Statement Details and Descriptions. What is the method to see that column in the All Transactions list? -Thanks!
                                                                                                                • Zoho Books | Product updates | October 2025

                                                                                                                  Hello users, We’ve rolled out new features and enhancements in Zoho Books. From iOS 26 updates to viewing reports as charts, explore the updates designed to enhance your bookkeeping experience. Zoho Books Updates for Apple Devices At WWDC 2025, Apple
                                                                                                                • Bill sent for Payment Approval

                                                                                                                  Zoho Books currently supports three levels of transaction approval for bills: Draft, Submit, and Approved. We are looking to add a layer of approval like a bill marked for payment before initiating payment requests through HSBC Bank. Can you please guide
                                                                                                                • Ask the Experts - Live Q&A webinar

                                                                                                                  Hello Community, We’re excited to host our very first Ask the Experts session! Join us on 7 April 2026 from 11 a.m. to 12 p.m. (IST) for this live webinar Q&A session, where you will have an opportunity to connect directly with our product experts, gain
                                                                                                                • All new Address Field in Zoho CRM: maintain structured and accurate address inputs

                                                                                                                  Availability Update: 29 September 2025: It's currently available for all new sign-ups and for existing Zoho CRM orgs which are in the Professional edition exclusively for IN DC users. 2 March 2026: Available to users in all DCs except US and EU DC. 24
                                                                                                                • Kaizen #235 - Automating record restoration using Recycle Bin APIs in Zoho CRM

                                                                                                                  Welcome to another Kaizen week. Here's a question that came up in our developer forum: "I'm working on a piece of software to automate conversion of Leads into Deals based on order status from my company's website. There are some cases where a previously
                                                                                                                • Open PDFs using Zoho PDF Editor

                                                                                                                  Hello users, In this article, we will be exploring the open PDF capability in Zoho PDF Editor to collaboratively edit PDFs, insert text and images, add fillable and e-signature fields, and more. You can upload PDFs upto 50 MB or 150 pages. Password-protected
                                                                                                                • One Contact with Multiple Accounts with Portal enabled

                                                                                                                  I have a contact that manages different accounts, so he needs to see the invoices of all the companies he manage in Portal but I found it not possible.. any idea? I tried to set different customers with the same email contact with the portal enabled and
                                                                                                                • Bank Feeds Breaking Constantly

                                                                                                                  Hey Everyone, I have already reached out to support about this issue but I am wondering if anyone else is having the same issue. My bank feeds keep breaking within days of me fixing them by updating the credentials. Its been happening for a while and
                                                                                                                • Print Sales Orders, Purchase Orders or Invoices from API

                                                                                                                  Hello, Is it possible to use the print option that is available in Sales Orders Purchase Orders and Invoices with the API?. I don't see any information in the docs about this. Thanks
                                                                                                                • Timed addition to segments

                                                                                                                  Hi there - hoping you can help me figure out a graceful way of doing this: • I want to add contacts to a Segment in Campaigns based on a Stage pick-list field value X in CRM - that bit's fine. The problem is that I only want to add them to the Segment
                                                                                                                • Zoho Developer AI Agent = Claude AI + MCP Server + Zoho Ecosystem

                                                                                                                  Hello Zoho Community 👋 I’m excited to share a recent integration we’ve worked on at Officehub Tech: ✅Claude + MCP Server + Zoho Creator Zoho Developer AI Agent – an AI-powered Zoho automation platform This solution connects Zoho applications with an
                                                                                                                • Dynamic Questions in Zoho Forms

                                                                                                                  Is it possible to add dynamic questions (like displaying a user’s name) in Zoho Forms? I know this is possible in surveys, but can we implement similar functionality in Zoho Forms?
                                                                                                                • Cliq iOS can't see shared screen

                                                                                                                  Hello, I had this morning a video call with a colleague. She is using Cliq Desktop MacOS and wanted to share her screen with me. I'm on iPad. I noticed, while she shared her screen, I could only see her video, but not the shared screen... Does Cliq iOS is able to display shared screen, or is it somewhere else to be found ? Regards
                                                                                                                • Google Fonts Integration in Pagesense Popup Editor

                                                                                                                  Hello Zoho Pagesense Team, We hope you're doing well. We’d like to submit a feature request to enhance Zoho Pagesense’s popup editor with Google Fonts support. Current Limitation: Currently, Pagesense offers a limited set of default fonts. Google Fonts
                                                                                                                • CRM

                                                                                                                  How do I build an email funnel of 10 emails with decision tree ie; if yes use this email if no use this email. Also I cannot figure out how to add more groups or see my whole groups. I've set up different groups like attorneys is one group of companies/people
                                                                                                                • WebDAV support

                                                                                                                  I need WebDAV support so that I can upload/download (and modify) documents from my local file system. Is anything planned in his direction?
                                                                                                                • Replying from same domain as a catch-all?

                                                                                                                  I have 2 domains setup on Zoho, both with associated email addresses. They look something like this: john@example.com (primary address) john@test.com (this domain also has a catch-all setup) I use the catch-all for test.com as a public-facing email address
                                                                                                                • Is there a way to show contact emails in the Account?

                                                                                                                  I know I can see the emails I have sent and received on a Contact detail view, but I want to be able to see all the emails that have been sent and received between all an Accounts Contacts on the Account Detail view. That way when I see the Account detail
                                                                                                                • Internal Fillable Contract with Zoho Writer (Before Sending to Client)

                                                                                                                  Hi everyone, I’m trying to automate the following process in Zoho CRM and would appreciate some guidance. Process: When a Deal moves to a specific stage, CRM triggers an automation. CRM sends a contract template to an internal team member so they can
                                                                                                                • Standard practice rerun updated deluge function over existing recordes

                                                                                                                  Hi folks, we have a function which is triggered via webhook from a third-party solution which then calls another api with a contact-id and gets a json payload back and then parses that data to custom fields in our CRM to the record id. As requirements
                                                                                                                • can change deal colors in bigin?

                                                                                                                  can be super useful if we can change colors deals process  any way to do it?
                                                                                                                • Import Quote from CRM into document in Writer?

                                                                                                                  Hi, I created a quote for a proposal in the Zoho CRM and was wondering if there is a way to embed the quote into a document in Zoho Writer so I can make our sales proposals look a little nicer. Is that possible?
                                                                                                                • Next Page