Microsoft is removing the integration between Exchange Online and On-premises Dynamics Customer Engagement October 2026.
This is going to leave us without an integration to bring in emails from our Online Exchange Outlook mailboxes into our on-prem Customer Engagement.
How are other folks handling this removal of service by Microsoft?
Migrating to Online in less than a year is an improbable task as our Customer Engagement instance is highly customized and integrated with other on-premises databases as well as SharePoint online and other services.
You’d be surprised how fast you can upgrade your system. How large is your company? Do you have a partner?
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That’s a tough spot with EWS retiring! Don’t worry, you have two main options to keep getting Exchange Online emails into your on-premises Dynamics CE:
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Build a Custom Bridge (Microsoft Graph API): This is the future-proof solution. You’d write custom code (like an Azure Function) that securely talks to Exchange Online via the modern Graph API and then pushes the emails into your on-premises Dynamics CE through its web services.
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Use Power Automate (The Practical Solution): This is often faster. You set up a Power Automate flow that triggers on new Exchange emails, and it uses the On-premises Data Gateway to securely create the Email Activity records directly in your local Dynamics CE instance.
Given your customized system and tight deadline, the Power Automate bridge (Option 2) is likely the quickest and most practical way to restore email synchronization securely.
Would you like some specific resources on setting up the Power Automate approach?
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Hi @Allison_Briden,
Microsoft is ending the integration between Exchange Online and on-prem Dynamics CE in October 2026 which means emails from Outlook will no longer sync directly into on-prem CRM.
Most organizations are handling this by using a third party email sync tool or building a lightweight custom connector using Microsoft Graph API or planning a phased migration to the online version when the timeline allows.
A full migration in one year is not realistic for highly customized environments so these temporary solutions are what most teams are using to keep email tracking working until a long term plan is ready.
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Thank you so much for the information and sound advice, @Amy !
We are planning to migrate online but need a couple years to complete the overall process. This immediate need to get a replacement tool to sync email with CE is going to be a challenge.
We may try a Graph API connector as a temporary solution, or revert our mail to an on-prem Exchange server.
Thanks again!
Hi, @Hardik_Gupta ,
A Graph API connector is a solution we will consider as a temporary measure while we get ready for migration to online.
I would love some specific resources on setting up the Power Automate approach. Please send and I will take a look! 
Thanks!
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Hi, @Tim_Dailey ,
We have over 400 users. Our on-premises system is highly customized with integrations to web forms, Exchange Online, Power BI, Great Plains on-premises, an on-premises custom Project Tracking application. We have a full year of projects planned for 2026 and need a lot of internal resource availability to accomplish this.
I’m really glad the earlier note helped. You’re handling a tough transition with a lot of clarity.
Here are the Power Automate resources you asked for:
1. Triggering on new Exchange emails
https://learn.microsoft.com/power-automate/email-triggers-outlook
2. Setting up the On-premises Data Gateway
3. Creating records in Dynamics 365 (On-prem) via Power Automate
https://learn.microsoft.com/power-automate/connection-dynamics-365-onprem
If you want, I can also share a simple flow outline (email trigger → parse → create activity) that many teams use.
Happy to help anytime if you get stuck or need another viewpoint.
Hardik,
Thank so much for sharing these resources!
For the url on step 3., https://learn.microsoft.com/power-automate/connection-dynamics-365-onprem, I get a 404 – Page not found error. Do you have another resource for guidance on that step?
Hardik,
I also get the 404 not found error on the link in step 1 https://learn.microsoft.com/en-us/power-automate/email-triggers-outlook
Thanks for checking those links. Microsoft must have shifted or deprecated those pages recently. Here are the updated resources that cover the same steps:
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Updated Outlook email trigger docs:
https://learn.microsoft.com/en-us/connectors/office365/ -
On-premises Data Gateway setup (still valid):
https://learn.microsoft.com/en-us/data-integration/gateway/service-gateway-install -
Updated Dynamics 365 (on-prem) connector guidance:
https://learn.microsoft.com/en-us/connectors/dynamicsax/
For creating email activities, you can use the HTTP request connector with your on-prem CE web services; that’s the most consistent method teams use now that some older docs have moved.
If you still run into issues, happy to walk through it with you. I’m available today at 10 AM EST, or tomorrow, or anytime next week for a quick solutioning call so we can troubleshoot together.
Let me know what works best for you.
E: hardik.gupta@allgrowtech.com
Have you found a solution to this, or is there something I can help you out?
Hi, Hardik!
Thanks for following up. We do not have a solution yet; it will be a significant amount of work to set up the workflows that create new email activities in CE queues when mail is received and push outgoing messages in CRM out to Exchange. Microsoft is really backing us into a corner.
Thanks for sharing the details. We completely understand the situation, this is something many users are facing after Microsoft’s recent changes to policies and workflows around email and engagement scenarios. It has impacted CRM–Exchange integrations quite a bit.
We can help set up the required workflows to create new email activities in Dynamics 365 CE queues and handle outbound messages from CRM to Exchange, with customization based on how Exchange activities need to behave. Our focus would be on a straightforward, stable solution so the email workflow in CE queues runs reliably without ongoing workarounds.
Happy to discuss and see how best we can support. If available, we can have a quick call on this next week when you’re available.
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