My old Frontier email settings stopped working
Change them to Yahoo servers: incoming imap.mail.yahoo.com, port 993, SSL; outgoing smtp.mail.yahoo.com, port 465, SSL; and use a Yahoo app password.
Frontier Email: Settings, Sign-In & Fixes
Frontier email is hosted by Yahoo, so old Frontier server names like pop3.frontier.com and smtp.frontier.com no longer work. Mail apps also need a Yahoo app password.
Covers @frontier.com, @frontiernet.net. Run by Yahoo, on behalf of Frontier. Checked against Frontier's own help pages, November 2026.
Frontier email server settings
| Server | Address | Port | Security |
|---|---|---|---|
| Incoming (IMAP) | imap.mail.yahoo.com | 993 | SSL/TLS |
| Incoming (POP) | pop.mail.yahoo.com | 995 | SSL/TLS |
| Outgoing (SMTP) | smtp.mail.yahoo.com | 465 | SSL/TLS |
- Username: Your full Frontier email address
- Password: Mail apps need a Yahoo app password, made in your account security settings, instead of your normal password.
- Use IMAP if you read mail on more than one device; POP downloads mail to one device only.
Official page: Frontier email settings
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Common Frontier email problems
My mail app says "authentication failed"
Create a Yahoo app password, remove the account from the app, then add it again using the app password.
Frontier's email help pages won't open
Use Yahoo Help's Frontier section instead; Frontier email questions are handled there.
My older emails are missing in a new app
Set the account up as IMAP and tell the app to download full messages and keep mail on the server.
Problems that look the same on every provider
Can't sign in, or the password stopped working
- Sign in on the provider's own webmail page first. If that works, the problem is your mail app, not the account.
- If webmail rejects the password, use the provider's "Forgot password" page. Never use a reset link from an email you did not ask for.
- Many providers now need a separate app password (or their own sign-in screen) for Outlook, Apple Mail and phone apps. Your normal password will not work there.
Not receiving emails
- Check Spam, Junk and any filters or "blocked senders" in webmail.
- Check whether the mailbox is full; most providers stop accepting mail at the storage limit.
- If your app shows nothing new but webmail does, remove and re-add the account in the app using IMAP.
Can't send, or emails are stuck in the Outbox
- Check the outgoing (SMTP) server, port and security on this page against your app; old guides often list ports that no longer work.
- Turn on "My outgoing server requires authentication" and use the same username and password as incoming.
- Large attachments are a common cause. Remove the attachment and try again.
Contacts are getting spam from my address
- Change the password from webmail, then sign out of all other sessions if the provider offers it.
- Check forwarding rules, filters and the reply-to address in settings; attackers often add a hidden forward.
- Turn on two-step verification, and update the password anywhere else you used the same one.
Setting it up on a new phone or computer
- Use IMAP rather than POP so mail stays in sync across your phone, computer and webmail.
- Enter your full email address as the username unless the provider says otherwise.
- If the app offers the provider by name (Yahoo, Google, Outlook), choose that instead of "Other".
Sources: Yahoo help (Frontier): IMAP server settings · Yahoo help: POP access settings · Yahoo help (Frontier): fix POP or IMAP sending and receiving problems. Providers change settings from time to time; their own page is the final word.
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