Important: Changes to Microsoft (Outlook) Bulk Email Sending

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 PathThis 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.

Notes
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

    • 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

    Nederlandse Hulpbronnen


      • Recent Topics

      • Join our World Password and Passkey Day expert Q&A 2025

        Hey everyone! World Password and Passkey Day is almost here, and there's no better time to talk about something we all rely on daily—secure authentication. Did you know that a staggering 60% of hacking-related breaches are tied to weak or stolen passwords?
      • Dashlane discontinued its free plan: Here's why Zoho Vault's free plan is worth the switch

        Hey everyone, Dashlane password manager has officially announced that its free plan will be discontinued starting September 16, 2025. This change means that current free users will need to either upgrade to a paid subscription or export their data and
      • Introducing SecureForms in Zoho Vault

        Hey everyone, Let’s face it—asking someone to send over a password or other sensitive data is rarely straightforward. You wait. You nudge. You follow up once, twice—maybe more. And when the information finally arrives, it shows up in the worst possible
      • Clickjacking: Zoho Vault's Response

        Issue: Password manager browser extensions are found to be vulnerable to clickjacking security vulnerabilities that could allow attackers to steal account credentials, TFA codes, and card details under certain conditions. Reported by: Marek Toth, Independent
      • Free webinar: Security that works: Building resilience for the AI-powered workforce

        Hello there, Did you know that more than 51% of organizations worldwide have experienced one or more security breaches, each costing over $1 million in losses or incident response? In today’s threat landscape, simply playing defense is no longer enough.
      • Free webinar—Redefining workforce security with Zoho Vault: Passwords, passkeys, and multi-factor authentication

        Hi everyone! Did you know that in Q2 alone, 94 million data records were leaked globally? Behind every breach is a combination of poor password habits, phishing attacks, privilege misuse, and simple human error. The fallout—including reputational damage,
      • Fill Colors

        Hello, Just curious, is it possible to manage the Used and standard colors in the fill drop down menu ? I would like to change/edit them is possible to colors I frequently use. Thanks for you reply, Bruce
      • Client scripts for Zoho Books ?

        Good day everyone, I am looking for a way to be able to interact with the Quotes and Invoices as they are being created. Think of it like Zoho client script in Zoho CRM. But for the life of me I dont see a way to do this. The issue with having function
      • Fillable template with dynamic tables?

        Is there a way to build a fillable template so that users can add rows to a table? To describe what I'm trying to accomplish the table has 3 sections; a header row, some number of rows with custom information, and a summary row with totals. I can't figure
      • Invoicing multiple expense items as a single line item

              My client would like me to invoice them for multiple expense items on a single line item on an invoice.  Can this be done?  I know I can import billable expenses to an invoice, but I don't know how to show them as a single line item or have them
      • Tables improvement ideas / features

        Heya, I've been using Zoho Tables for a few months now and wanted to post some features that I think will be greatly beneficial for the tool: 1. Ability to delete a record in automation or move a record in automation. - Usecase: I move a record from one
      • Announcing offline payment modes for event tickets

        Hello everyone,   Collecting ticket payments from prospective attendees can be a tricky part of event planning. While Zoho Backstage has always allowed you to collect payments online as people buy tickets from your event microsite, we have now enabled
      • Gmail is ramping up its email sender policy from November 2025

        Hello marketers, As you may be aware, Gmail introduced a guideline for bulk senders starting February 2024. If not, here's a quick refresher straight from Google: After this policy was announced first in 2023 and soft-implemented in February 2024, we
      • Deluge Error Code 1002 - "Resource does not exist."

        I am using the following script in a Custom Button on a Sales Return. Basically, the function takes the information in the sales return (plus the arguments that are entered by the user when the button is pushed) and creates a return shipping label via
      • Is there a list of Zoho Icons?

        Is there a list of Zoho Icons you can reference: i.e. business-gold is <image marginRight='7px' color='#2A70E7' bgColor='#FFFFFF' width='52px' height='52px' type='icon' value='business-gold' size='24px' cornerRadius='26px' iconType='solid' /> Thanks!
      • Item images

        Can we get an "On hover" expanded image for items please ?
      • Ability to Create and Manage YouTube Video Chapters in Zoho Social

        Hi Zoho Social Team, How are you? We would like to request an enhancement to Zoho Social that would allow users to create and manage YouTube video chapters directly within the platform. Currently, Zoho Social does not support manually adding chapters
      • What happens to my current site SEO if i opt for zoho creator?

        I have an existing website and I need to use Zoho creators for the rapid creation of my webpage creation. Currently, my IT team is creating the web pages, but I am concerned about the SEO of my current website if I shift to zoho will i loose it all?
      • Automatic Portal invite

        We have numerous customers we move through a blueprint in deals, when they get to a certain point we need to give them portal access, how can this be done through deluge or a workflow?
      • Preview Emails with Merge Fields before sending

        Hello, Are there plans to preview an email with merge fields before sending out? Currently, all you see in the preview are the merge field values, but before I send out the email I want to make sure the merge is working. Also, the saved emails only show
      • User Filter not selecting All Items

        We are encountering 2 issues when using the user filter. When users are trying to search using the filter option, the OK button is grayed out. Users have to unselect or make a change before it filters properly. 2. When filtering and the OK button works,
      • Support Nested JavaScript Variables in PageSense Pop-up Targeting

        Hello Zoho PageSense Team, I hope you're doing well. I’d like to request a feature enhancement for the PageSense pop-up targeting functionality. Current Limitation: Currently, PageSense pop-ups can be triggered using simple JavaScript variables. However,
      • Cannot Invert Axis for Rankings

        Hi there I want to be able to create a ranking graph in Analytics/BI, with 1 at the top of the Y axis, but I am unable to invert the axis. Super simple example in Excel below. Higher rankings need to be higher up on the graph to give the correct visual
      • How to copy value from a single line field into a picklist field within a module's subform?

        Hello there, I have a single line field in a module's subform. I would like the value in the field to automatically update a picklist field within the same subform (both have items with the same names). Is this possible via function? Unfortunately, workflows
      • Committed Stock and To Be Received Stock via API?

        Is it possible to retrieve Committed Stock and/or To Be Received Stock for an Item via the API? I want to use this information for calculating the amount of inventory needed to be purchased.
      • Creating Email template that attaches file uploaded in specific field.

        If there's a way to do this using Zoho CRM's built-in features, then this has eluded me! I'm looking to create a workflow that automatically sends an email upon execution, and that email includes an attachment uploaded in a specific field. Email templates
      • Marketer’s Space - Automate a Personalized Holiday Workflow with Zoho Campaigns

        Hello marketers, Welcome back to another post in Marketer’s Space! From Thanksgiving through Christmas, you have a flurry of opportunities to connect with your audience. In this post, we’ll see how you can plan an entire month-long automated workflow
      • Service Account Admin for API Calls and System Actions

        Hello, I would like to request the addition of a Service Account Admin option in Zoho product. This feature would allow API calls and system actions to be performed on behalf of the system, rather than an active user. Current Issue: At present, API calls
      • Sorting columns in Zoho Projects

        Hi, In project management best practice, sorting columns (ascending, descending) is an important tool. Sorting dates to see the order of tasks starting, sorting on priority or even on planned hours is a must for an efficient project control. Currently,
      • Zoho CRM - Calendar Cards View - Let Users Decide What Is Displayed On Calendar Entries

        Imagine planning your week of face-to-face meetings across three counties. You’re trying to group appointments by location to make the best use of your time, but Zoho CRM’s calendar doesn’t show where each meeting is happening. You’re left trying to remember
      • Zoho Inventory - How to pay a supplier up front then receive multiple deliveries

        How do we manage situations where we pay a supplier up front, then the receive the products in increments? Example Workflow: Create Purchase Order > Receive Bill for full amount > Receive Items 2 or more deliveries. Currently, once a Bill is created against
      • How can I add or change the active customer in Zoho Projects?

        I'm trying to change the customer in an active Zoho project. Is it possible to add or change the customer?
      • What happens when someone clicks 'unsubscribe' in a zoho CRM email

        Hello, As per, i am going round in circles trying to find an answer to these 2 question. I have an email template that has an unsubscribe link in the footer in zoho CRM. First, what happens when someone clicks it - where does the contact get unsubscribed
      • Zoho CRM - Scheduled Reports Which Contain Chart

        Hi Zoho CRM Team, I'm requesting that the Report Export and Scheduling feature be enhanced to include a chart, if one has been created on a report. At the moment I have a report which shows Sales This Week by Deal Owner and a pie chart at the top of the
      • Can I add Conditional merge tags on my Templates?

        Hi I was wondering if I can use Conditional Mail Merge tags inside my Email templates/Quotes etc within the CRM? In spanish and in our business we use gender and academic degree salutations , ie: Dr., Dra., Sr., Srta., so the beginning of an email / letter
      • Cadences

        I have just started using Cadences for follow-up up email pipeline. Is it just me or do you find the functionality very basic? For example, it will tell me (if I go looking for it) if someone has replied to a follow-up and been unenrolled; but it won't
      • Canvas View in Zoho Recruit

        Is it possible or would it be possible to have the new 'Canvas View' in Zoho Recruit?
      • Zoho Inventory - Move Orders

        Quick question about Move Orders... Why is there no status to say something like "Draft", "In Progress" and "Completed", similar to Transfer Orders? I'm assuming that when something needs to be moved it should be planned in Inventory, executed and then
      • Kaizen #215 - Workflow APIs - Part 3 - Create and Update Workflow Rules

        Welcome back to another week of Kaizen! Over the last couple of weeks, we’ve joined Zylker Cloud Services as they review and improve their workflows. In Part 1, we discovered and audited their sprawling workflow landscape. In Part 2, we learned how to
      • DataPrep Bigquery Connection failed

        Hello everybody, I want to create a connnection beetwen Bigquery and Dataprep but when I try to connect my project I got this error Loading tables has failed. Table list fetched from the data source expired.
      • Next Page