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Playbook for makers · Forced move · free while in beta

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Exchange Online turns off EWS for good on April 1, 2027

Readers can stay on Exchange Online: they change a setting or plan. Help the ones who would rather leave.

167 days left · April 1, 2027 · Public page

Low switching pressure30/100

An estimate from the deadline, cost, discussion and need to move. It is not a product rating.

What goes into it

Confidence: medium.

deadline8/30
money14/25
attention0/25
audience0/12
force8/8
  • Hard deadline in 167 days.
  • The change is forced: it reaches users even if they wait.
  • Export is hard. A free importer wins this wave.

  1. 1 Related discussions

    Only threads tied to this event that talk about leaving, moving or prices. Saved, not live. Check the date and read the thread before replying.

    No live threads yet.

  2. 2 What people ask

    No common questions yet.

  3. 3 Reply templates

    Answer the question first. Link only if it helps. Always keep the disclosure line. Never post the same text twice.

    Helpful first
    Sorry you have to deal with this. You can stay on Exchange Online. Here is what to change before April 1, 2027:

1. Find what still uses EWS. Open the EWS usage reports in the Microsoft 365 admin center. List each app and script.
2. Move your own scripts to Graph. Rewrite in-house code to call Microsoft Graph. Finish before April 1, 2027.

If they would rather leave, describe a verified way <your product> can help: <your link>
[Disclosure: I build <your product>.]
    Short answer
    You have until April 1, 2027. You can stay on Exchange Online. First: find what still uses EWS. Then move your own scripts to Graph.
Happy to help if you get stuck.
[Disclosure: I build <your product>.]

  4. 4 Switch-page builder

    Create a draft “Switch from Exchange Online” page. Add your product, review every claim, then copy HTML or Markdown. Your product claims need your own evidence.

    • Add your product name to replace “Your product”.
    Preview

    Switch from Exchange Online to Your product

    Apps that use EWS with Exchange Online: a change is due by April 1. You can stay on Exchange Online. If you would rather leave, here is how to move to Your product.

    What changes at Exchange Online

    Microsoft started blocking Exchange Web Services (EWS) in Exchange Online on October 1, 2026. On April 1, 2027 it is turned off for good. Apps must move to Microsoft Graph.

    • EWS turned off for good: April 1, 2027 (Microsoft)
    • Blocked by default from: October 1, 2026, for tenants that left the EWS setting empty (Microsoft)
    • Until then, admins can: Turn EWS back on, with or without a list of allowed apps (Microsoft)
    • Turning it back on: There will be a service interruption (Microsoft)
    • After the final date: Admins can no longer turn EWS on; no exceptions (Microsoft)
    • Exchange Server on your own servers: Not affected (Microsoft)
    • Microsoft's replacement: Microsoft Graph (Microsoft)
    • How to see EWS use: EWS usage reports in the Microsoft 365 admin center (Microsoft)
    • Plan published: February 5, 2026 (Microsoft)
    • Apps and scripts that use EWS: Stop working with Exchange Online after April 1, 2027 (Microsoft)

    You can stay on Exchange Online if you make the change. This page is for people who would rather leave.

    What Your product gives you

    Write two or three short lines here. Say what Your product does, who it is for, and what it costs. Use only facts you can show.

    How to move from Exchange Online to Your product

    1. Ask each vendor for a Graph version. Backup, CRM, room booking and mail tools may use EWS. Ask when they move to Microsoft Graph.
    2. Import into Your product. Say which files you accept and how long an import takes.

    Tell readers the key date: April 1, 2027.

    Questions people ask

    If Your product has a direct answer to one of these, add it here. Keep it short and true.

    How to help new users settle in

    Send one short email. Say what changed, where to find you now, and what they need to do. Put the most important line first.

    If there is a date, send a short reminder a few days before it. Keep a copy of the list you sent it to.

    Sources

  5. 5 Search ideas to validate

    suggested, not measured Phrases people may search when a tool changes like this. We have no search volume data for them.

    • apps that use ews with exchange online
    • exchange online alternative
    • exchange online alternatives
    • exchange online export
    • how to leave exchange online
    • switch from exchange online
    • exchange online migration
    • exchange online migration 2027