Upcoming email changes (2026–2027)

Announced changes by Microsoft, Google, certificate authorities and the DMARC standard that will break some email before most people notice. Each page says what changes, when, how to check your setup today and how to fix it.

FromChangeWhoStatus
2026-04Gmail Stops Fetching POP Mail and Ends Gmailify in January 2027: Switch to Forwarding or IMAPGoogleconfirmed
2026-05DMARCbis (RFC 9989): pct Is Gone, t=, np= and psd= Are New — Update Your DMARC RecordIETF, then each mailbox providerexpected, no date
2026-07Outlook "Promotions" Tag in Microsoft 365: What It Means for Your Newsletters and NotificationsMicrosoftconfirmed
2026-07-01Microsoft 365 MX Records Move to *.mx.microsoft: What Changes for New and Existing DomainsMicrosoftconfirmed
2026-12Microsoft 365 SMTP AUTH: Basic Authentication Off by Default at the End of December 2026Microsoftconfirmed
2027-02-01MailerSend Retires DKIM TXT Records on 1 February 2027: Move to the New CNAME RecordsMailerSendconfirmed
2027-02-10Shorter TLS Certificates for Mail Servers: Let's Encrypt 64 Days (Feb 2027), 100-Day Maximum (Mar 2027)CA/Browser Forum and Let's Encryptconfirmed
2027-04-15April 15, 2027 Root CA Distrust: Will Your Mail Server's Certificate Still Be Trusted?Mozilla, Chrome and the CAsconfirmed

Check your domain now

After the fix, send a test email to see SPF, DKIM and DMARC pass on a real message, then keep an eye on it: free DMARC monitoring shows every service that sends mail as your domain and which ones fail, in plain English.

Rather not touch DNS? I set up SPF, DKIM and DMARC without breaking your other senders, with a before/after report.

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Prefer to do it yourself? Get the step-by-step Fix Kit ($15) – 28-page guide, checklist, 20+ providers.