Comcast to Yahoo Email Migration FAQ

What is the Yahoo/Comcast email migration?
Comcast (Xfinity) is transitioning all active @comcast.net email accounts to Yahoo Mail as the hosting provider, starting in June 2025 and continuing through 2026. Your email address (@comcast.net) will remain the same, but you’ll access it through Yahoo Mail’s platform, which offers updated features. This change does not affect other Xfinity services like internet or TV.
When will my email account be migrated?
The migration is happening in phases, starting June 2025 and rolling out through 2026. You’ll receive an invitation email from xfinity@updates.xfinity.com or see a prompt when you securely sign in at connect.xfinity.com. Check your inbox or spam folder for these notifications.
What do I need to do to complete the migration?

What happens to my emails, contacts, and folders?

  • Migrated: All emails, contacts (up to 10,000), and folders (up to 4,100) will transfer automatically.
  • Exceptions: Folder names over 240 characters will be shortened. Folders matching Yahoo’s default names (e.g., “Sent”) will be renamed. Excess folders may be consolidated. Filters and forwarding settings will not transfer.
  • Large Emails: Emails over 25MB won’t migrate automatically. You must download and delete them before migration, or they’ll be placed in a special folder post-migration, where you have 30 days to download/delete them before permanent deletion.

How long do I have before my email data is deleted?

  • After invitation: Once invited, you should accept Yahoo’s terms promptly. If you delay, access to your email may become limited until you complete the process.
  • Longer window: Official guidance currently presents the upgrade as optional, though Xfinity plans to complete the transition for remaining accounts. Taking no action for an extended period can result in loss of access to the @comcast.net address and data.

What happens if I miss the initial window?
If access becomes limited after your invitation, you can still sign in at connect.xfinity.com or login.yahoo.com, accept the terms, and regain access without data loss in most cases. Contact Xfinity support (1-800-XFINITY) if you need help.
Can I opt out of the migration?
Yes. The upgrade is currently presented as optional. If you prefer not to move to Yahoo Mail, you can export your data (emails and contacts) using the official Xfinity export tools and close the account if desired. Note that the email address and remaining data will eventually be affected as the transition completes.
How can I back up my email data before migration?

  • Emails: Export using an email client like Outlook (IMAP: imap.comcast.net, port 993, SSL/TLS) or use the official Xfinity export portal, or download from the Xfinity web interface.
  • Contacts: Save as a CSV file from the Xfinity email interface.
  • Large Files: Search for emails over 25MB and download/delete them to avoid migration issues.

Will I need to update my email settings on devices or apps?
Yes, after migration, reconfigure third-party email apps (e.g., Outlook, Apple Mail) with Yahoo’s settings:

  • IMAP Server: imap.mail.yahoo.com, port 993, SSL/TLS.
  • Generate an app-specific password in Yahoo’s account security settings (recommended over less secure sign-in options).

Where can I get more information or help on the Comcast email migration?

For more information about Computer Repair & Services, please Contact Us at 651-439-7544 and we’ll get right back to you.
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