Important: Changes to Microsoft (Outlook) Bulk Email Sending

Dear Marketers,

We want to bring your attention to an important upcoming change announced by Microsoft (Outlook) that will impact users sending bulk emails to Outlook.com, Hotmail.com, and other Microsoft-hosted inboxes. This update focuses on strengthening email authentication to improve inbox security and reduce spam. These measures will help reduce spoofing, phishing, and spam activity, empowering legitimate senders with stronger brand protection and better deliverability.

Microsoft's New Requirements for Bulk Senders:

Microsoft is introducing new requirements for domains sending more than 5,000 emails per day. Starting May 5th, 2025, Outlook will begin enforcing stricter email authentication standards.

Key Changes to Be Aware Of:

• Mandatory SPF (Sender Policy Framework): Your sending domain must pass SPF authentication. Ensure your domain's DNS record accurately lists all authorized IP addresses and hosts that send emails on your behalf.

• Mandatory DKIM (DomainKeys Identified Mail): Your emails must pass DKIM authentication. This validates the integrity and authenticity of your emails.

• Mandatory DMARC (Domain-based Message Authentication, Reporting, and Conformance): Your domain must have a DMARC record in place, and alignment with either SPF or DKIM (preferably both for optimal deliverability).

Impact on Non-Compliant Senders:

• Initial Routing to Junk: After May 5th, 2025, emails from high-volume senders that do not comply with these authentication requirements will initially be routed to the Junk folder.

• Future Rejection: Microsoft has stated that in the future, non-compliant emails will be rejected entirely to further protect their users.

Recommendations for Zoho Marketing Automation Users:

As users of Zoho Marketing Automation, especially if you send bulk email campaigns that might exceed 5,000 emails per day to Microsoft-hosted inboxes, it's crucial to take the following steps now to ensure your email deliverability is not affected:

• Review Your DNS Records: Audit your SPF, DKIM, and DMARC records for the domains you use to send emails through Zoho Marketing Automation. Verify that they are correctly configured and accurately reflect your sending infrastructure.

• Ensure SPF Passes: Confirm that your SPF record includes all necessary sending sources for Zoho Marketing Automation.

• Ensure DKIM is Implemented: Verify that DKIM signing is properly set up for your sending domains within Zoho Marketing Automation.

• Implement DMARC: If you haven't already, implement a DMARC record in your DNS. Starting with p=none allows you to monitor your email authentication results before moving to stricter policies.

• Configure Custom Return Path: This dedicated custom return-path address allows you to receive detailed notifications about email bounces, enabling you to analyze delivery issues and proactively manage your email lists.

• Follow Email Hygiene Best Practices: While not strictly mandatory yet, adopting the following practices will further enhance your deliverability and sender reputation:

• Use compliant and valid "From" and "Reply-To" addresses.

• Include functional and easily accessible unsubscribe links.

• Maintain clean email lists and manage bounces effectively.

• Practice transparent mailing practices with clear subject lines and proper consent.

Next Steps for You:

1. Prepare Now: Review and update your SPF, DKIM, and DMARC records immediately.

2. Help Resources: If you need assistance with setting up SPF, DKIM, or DMARC, refer to Zoho Marketing Automation's help documentation.

This update from Microsoft underscores the increasing importance of proper email authentication for ensuring reliable email delivery. By taking proactive steps now, you can safeguard your email campaigns and maintain strong deliverability to Outlook inboxes.

We will continue to monitor this situation and provide any further updates or guidance relevant to using Zoho Marketing Automation. Keep an eye on our community forums and announcements.

It's important to note that Zoho Marketing Automation will not impose restrictions on email sending; however, users are strongly encouraged to proactively implement these authentication measures on their end to maximize deliverability

If you have any questions or concerns regarding this, please don't hesitate to reach out to our support@zohomarketingautomation.com or engage in the community forums.

Happy Marketing!
The Zoho Marketing Automation Team

• Topic Participants

• Moncy Samuel

  

• Sticky Posts

• Marketer’s Space - Automating CRM Actions with Journeys – Part 2

  Hello marketers! Welcome back to another post in Marketer’s Space. In our previous post, we explored how CRM actions in Journeys help marketing and sales teams work together by nurturing CRM leads and pushing only engaged prospects back to sales. If you

• Introducing automation and utility conversations in WhatsApp marketing

  We’re excited to announce the addition of two new features to our WhatsApp integration: Automation and Utility conversations. These enhancements will allow you to streamline your marketing efforts and engage with your customers more effectively by automating

• Tip of the week 02 - The art of 'seeing' your leads

  What's the last page that your lead visited before signing up for your brand? What was the page that first convinced your lead to explore more about you? Where are your leads coming in from? Well, these are some perennial questions today's marketers live upon. And, knowing the answers to these questions is crucial, considering the vitality of leads in every business. In the journey of finding lead opportunities, it's important to understand that every detail about a lead is useful. While the channels

• Zoho Marketing Automation Update: Topics, Contacts, and List Management

  At Zoho Marketing Automation, our highest priority is making it easier for you to use our product to accomplish your business goals. With that in mind, we are updating three of our pivotal features: Topic, Contacts, and List Management.   These existing

• Important: Zoho MarketingHub is now Zoho Marketing Automation

  Hello Everyone,   We hope you all are doing well. We'd like to notify you that we have rebranded Zoho MarketingHub to Zoho Marketing Automation. We'll discontinue using the term "MarketingHub" from May 26, 2021. However, there will be no changes in the

• Recent Topics

• Zoho project purchases

  Hi Folks, I think having a purchase module in projects will help in putting together a project p and L. Project wise purchases and expenses.  Do let me know your thoughts.

• Create Tasklist with Tasklist Template using API v3

  In the old API, we could mention the parameter 'task_template_id' when creating a tasklist via API to apply a tasklist template: https://www.zoho.com/projects/help/rest-api/tasklists-api.html#create-tasklist In API v3 there does not seem to be a way to

• How can I restore all the deleted Time entries of a Task in Zoho Projects

  How can I restore all the deleted Time entries of a Task in Zoho Projects? Query: In Zoho Projects, I cloned a task and deleted the time entries from the cloned task. However, this also deleted the time entries from the original task. How can I restore

• Is there a way to make an account inactive in ZoHo Desk

  We have a few Clients "Accounts" that we no longer do business with. It would be beneficial for them to not show up in lists. However, we want to go back and view tickets, time, etc.

• How to set the value of the Phone field importing contacts in Zoho Desk

  Hi everyone, i'm new in Zoho Desk, we're setting up the environment and i'm importing contacts from another CRM using a file CSV and i'm getting a problem with phone numbers (italian): the leading zero is cut away, also if the value is inside double quotes.

• Set Custom Icon for Custom Modules in new Zoho CRM UI

• Deprecation Notice: OpenAI Assistants API will be shut down on August 26, 2026

  I recieved this email from openAI what does it means for us that are using the integration and what should we do? Earlier this year, we shared our plan to deprecate the Assistants API once the Responses API reached feature parity. With the launch of Conversations,

• How to center a field inside a section?

  I’ve been trying to center a field inside a section in Zoho Canvas. When I align it visually, it looks centered in the editor, but after clicking Save, the field appears misaligned on the actual canvas. I also tried setting the field to full width, but

• Kaizen #192 - Implementing Custom Token Persistence in Python SDK

  Welcome back to another week of Kaizen! Last week, we discussed how to implement Login with Zoho using OAuth 2.0 and saw how to bring it to life in a real-world application with the Zoho CRM Python SDK. We also discussed how Zylker Academy built a custom

• Showing the map along with mileage expense

  When you use the GPS to track mileage, it shows you the map of the actual path travelled. It would be very useful and practical to save that map with the mileage expense, so that when the report is created, it provides a map of each mileage expense associated

• Enable Validation Rule for Multi-Select Picklist Field

  Zoho, Please allow validation rules for multi-select fields.

• File Upload field not showing in workflow

  Hi, I have added a field on Zoho CRM. I want to use it in a workflow where that particular field is updated based on another field, however it is not showing up in the field list to select it in the workflow. Why is this please?

• CRM Custom function updating a module record shows the Super Admin user as the record modifier

  Dear Zoho CRM Team, Is there any way to update this so that when a custom function has updated a record the Super Admin user doesn't become the modifier? This happens on the record as a modifier and shows up in the audit logs. It would be more useful

• Best practice importing items and matching assemblies

  Hi, I was wondering what would be the best practice to import items and composite items (assemblies) From my backup, what should I import first? The items or the composite items? I am on Zoho one, using inventory and books. Kind regards, Sabine

• Best way to fetch employee names from Zoho People into Zoho Creator Inventory Stock Form field Employee Name Lookup

  Hi Team, I have a requirement in my Zoho Creator application (Inventory Stock Adjustment) where I need to fetch employee names from Zoho People and use them as a lookup in a form. Currently, I am considering using an integration field to fetch this data

• get file api is returning Junk data

  I am working on extension development where at one point I need to retrieve attachments on records I found out I can use only invokeconnection and not invokeurl in extension development The invoke connection returns the image in raw binary format. When

• Need help with message box

  End user updates many records at once. Each have unique serial number. They want a confirmation box that says starting number, ending number and qty. Is there any way to do this? I been searching and asking support but seems like no great solution.

• [Webinar] The Transformative Power of Gen BI

  Traditional decision-making tools are no longer enough. The integration of generative AI into business intelligence (BI) is proving to be a true game changer—enabling businesses to make faster, smarter, and better informed decisions. Early adopters of

• Backorder process review - Automating Removal of Sales Order from "On Hold" When PO is Received

  Hello Zoho Inventory Team, Currently, sales orders in On Hold status are released only when the bill for the purchase order is created. In our workflow, it would be much more efficient if the sales order could automatically move out of On Hold as soon

• How to access the saved Query using API?

  I have created a query in setting. Is it possible to access it from a API? What's the endpoint? I tried /v8/queries/important_deals but didnt' work.

• création d'une base de données

  base de donnee d'un lycée

• User Session variables to recall after form submit & redirect to menu

  Hey, Forgive me if this is a simple answer I have overlooked. I have built a big onboarding process for my SAAS platform which is built and managed by an external Dev team. I am hoping to embed my new creator app on the SAAS platform. I have a menu page

• Zoho Writer Merge Template with data from Zoho Analytics Views

  Hello, Is there any way to pull information from Zoho Analytics and put it into a Merge Template? I am trying to create a bulk export of one report that filters on a field to create a single document for each of the filter fields.

• Having to enter bill before stock shows as available.

  Hi, Am I right in thinking you must create a bill from the purchase order receipt before the goods are available for shipping?

• Agent Availability Report

  From data to decisions: A deep dive into ticketing system reports Businesses need to track when their support agents check in and check out from work. This report, titled Agent Availability, is one of the static reports that helps managers track the number

• Writing by Hand in "Write" Notes

  Hi there! I just downloaded this app a few moments ago, and I was wondering if there was a way to write things by hand in "Write" mode instead of just typing in the keyboard. It would make things a bit more efficient for me in this moment. Thanks!

• AI-driven construction analytics using Zoho Projects Plus

  Construction projects thrive on timelines; if a project is completed on or before the expected time, it makes headlines, but if it gets delayed, the company’s credibility will be at risk. Such projects require precise planning and constant monitoring,

• Canadian payroll

  Hello ZOHO, is any updates on when payroll for Canada will be available?

• Unified customer view: Bringing product intelligence into your CRM data

  For businesses today, applications and digital interfaces are the main touch points in the customer journey. While Zoho CRM data already tells who your customers are and what they buy, Zoho Apptics tells you how they interact and engage with your product.

• Zoho Creator SaaS app with multiple client AND multiple users

  I am close to finalizing a Zoho Creator app that will be used by different companies to manage sale info, and each company can have multiple users using the app. Things were going perfectly until I tried a search on a report. I use a database field in each table to separate the data for each company, which works great. BUT when I do a search, I get to see ALL the data. This means that Company A could easily see the data from Companies B and C via the built-in search. Is there a way to set up the

• Project Change Orders and Additions

  We are in the process of migrating from QuickBooks Online to Zoho Books. We have Zoho One and like the ability to sync all of our data across everything. And I like that projects work in a way that's less dumb than QuickBooks. I'm trying to figure out

• Track online, in-office, and client location meetings separately with the new meeting venue option

  Hello everyone! We’re excited to announce meeting enhancements in Zoho CRM that bring more clarity and structure to how meetings are categorized. You can now specify the meeting venue to clearly indicate whether a meeting is being held online, at the

• Possible to send Zoom AI Companion transcripts and summaries to contacts in CRM?

  Title says it all. Is it possible to send Zoom AI Companion transcripts and summaries to contacts in Zoho CRM?

• How do I edit the Calendar Invite notifications for Interviews in Recruit?

  I'm setting up the Zoho Recruit Interview Calendar system but there's some notifications I don't have any control over. I've turned off all Workflows and Automations related to the Calendar Scheduling and it seems that it's the notification that is sent

• Posibility to add Emoticons on the Email Subject of Templates

  Hi I´ve tried to add Emoticons on the Subject line of Email templates, the emoticon image does show up before saving the template or if I add the Emoticon while sending an Individual email and placing it manually on the subject line. Emoticons also show

• Clarity on extended contract status

  Clarity on “extended” status- How does Zoho “extend” a contract?  E.g. if client extends by 1 month, can the “end date” be adjusted accordingly in Zoho and tagged as “Extended” with a clear audit trail that also captures the client’s email? Note- Email

• Customizing contract status

  Can we customize/add/remove status on Zoho contracts ourselves or does Zoho needs to do this? Context- There is a long list of status on Zoho but not all of them are relevant for us . There are few status which are missing and needs to be added. E.g-

• Set Custom Business Calendars and Holidays for Global Teams

  Managing a project across diverse teams means accounting for more than just tasks and deadlines; it means acknowledging how and when each team actually works. Users might follow different working days or observe region-specific holidays that cannot be

• [Integration edition] Deluge learning series - Integrations between Zoho apps and Third-party services with Deluge | 28 August 2025

  We’re excited to welcome you to the Deluge learning series: Integration edition! The Integration edition will run for three months: Session 1 – Integrating Zoho Apps with Deluge using inbuilt integration tasks Session 2 – Integrating Zoho Apps with Deluge

• Critical Vulnerability in all major password manager plugins - is Zoho Vault affected?

  Hi Zoho, a security researcher found a critical clickjacking vulnerability in all major browser password managers: DOM-based Extension Clickjacking: Your Password Manager Data at Risk | Marek Tóth Is Zoho Vault affected as well? Apparently the Vault extension

• Next Page