Microsoft switches to MS Graph API from EWS: A new challenge for Salesforce users

Microsoft is moving from Exchange Web Services to Microsoft Graph. It started switching off Exchange Web Services on October 1, 2026, and admins can switch it back on until April 1, 2027. Salesforce Lightning Sync retires on April 1, 2027. The key dates are below.

Date What happens Who it affects

October 1, 2026 Exchange Web Services retirement begins. Lightning Sync configs still on EWS stop capturing and syncing Microsoft 365 only. Gmail and Google Workspace orgs aren’t affected on this date

February 2027 (Spring ’27) Four legacy Einstein Activity Capture reporting features close: Activity Metrics, the Activities Dashboard, Recommended Connections, and Activity 360 Reports Any org reporting on EAC data, on either platform

April 1, 2027 Permanent EWS shutdown. No allowlist, no exemption, no extension Microsoft 365 only

April 2027 Lightning Sync retires Every remaining org, Microsoft 365 and Google Workspace alike

December 2027 Salesforce for Outlook full retirement, pushed back from June 2024 Orgs still running the Salesforce for Outlook desktop add-in

No new EWS apps registration
Deprecation of the 25 least used APIs for Exchange Online
Surface area reduction of the EWS protocol
No more support for deprecated APIs

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What does this mean for Salesforce users?

Salesforce Ligtning Sync / EAC will be unstable

Users will have difficulty mirroring events between Outlook and Salesforce, as well as capturing data

Greater possibility
of data loss

Data may not be properly captured, synced,
and saved to Salesforce

Longer migration time
and bugs

Creating a new synchronization system may take as long as 3 years, and, even worse, the sytem may have bugs

Why you should switch to Revenue Grid

No downtime with MS Graph

Revenue Grid already uses the MS Graph API, meaning that users will experience no difficulty with any of the supported apps, and there are no risks of data loss

Easy and fast migration

Migrating to Revenue Grid is faster and easier than most of it’s alternatives. Plus, we’ll guide you through every step of the migration process

Better security

Since Revenue Grid uses MS Graph API, you can effortlessly manage data access for different users more securely

What’s so great about Revenue Grid?

We hate to blow our trumpets, but here are a few reasons we are worth the hype:

The most secure data capture in the industry

Automatically capture, sync, amd save relevant sales data from email/calendar to Salesforce. Give your reps more time to sell and keep your CRM up to date every time

Real-time insights and revenue intelligence using Signals

See-through your pipeline and all of your team’s activities. Gain real-time insights from data captured, and improve forecasting accuracy with reportable data in Salesforce

Actionable Signals that guide your team to more wins

Create actionable Signals that alert your team about changes in your pipeline, deals, and territories, and nudge your team towards the next best steps to help them hit and exceed the quota

See how your sales team can benefit
with Revenue Grid