Help ›

Legacy client settings

If needed, users on our Personal and Pro plans can enable legacy connection protocols that may be required by older devices or clients, or to use as a “send as” address in services like Gmail. This also lets you avoid the need to modify or patch popular clients like Eudora – just use Auth-Email's legacy servers instead.

Once your email account has been authorized in the Auth-Email dashboard, change the settings in your email client, app or device to use the Auth-Email IMAP, POP or SMTP servers. Choose your server and port from the list below to match the email provider you are using. If needed, see our list of client setup guides for help finding and configuring the settings in your chosen client.

If you are unsure which details to use, check the Auth-Email dashboard, which will always show the correct server settings for each authorized account.

Microsoft 365, Office 365, Exchange Online, Outlook, Windows Live Mail and Hotmail

Configure your client to use the server outlook-legacy.auth-email.com

For IMAP, use port 993 (SSL).
For POP, use port 995 (SSL).
For SMTP, use port 465 (SSL).

If your client does not support TLS Server Name Indication (SNI), use the following ports instead:

For IMAP, use port 9931 (SSL).
For POP, use port 9951 (SSL).
For SMTP, use port 4651 (SSL).

If your SMTP client can only use opportunistic SSL/TLS (also known as STARTTLS), use the following ports instead:

For IMAP, use port 143
For POP, use port 110
For SMTP, use port 25 or 5871

Gmail and Google Workspace

Configure your client to use the server gmail-legacy.auth-email.com

For IMAP, use port 993 (SSL).
For POP, use port 995 (SSL).
For SMTP, use port 465 (SSL).

If your client does not support TLS Server Name Indication (SNI), use the following ports instead:

For IMAP, use port 9932 (SSL).
For POP, use port 9952 (SSL).
For SMTP, use port 4652 (SSL).

If your SMTP client can only use opportunistic SSL/TLS (also known as STARTTLS), use the following ports instead:

For IMAP, use port 1432
For POP, use port 1102
For SMTP, use port 5872

Microsoft 365 operated by 21Vianet

Configure your client to use the server 21vianet-legacy.auth-email.com

For IMAP, use port 993 (SSL).
For POP, use port 995 (SSL).
For SMTP, use port 465 (SSL).

If your client does not support TLS Server Name Indication (SNI), use the following ports instead:

For IMAP, use port 9935 (SSL).
For POP, use port 9955 (SSL).
For SMTP, use port 4655 (SSL).

If your SMTP client can only use opportunistic SSL/TLS (also known as STARTTLS), use the following ports instead:

For IMAP, use port 1435
For POP, use port 1105
For SMTP, use port 5875

Fastmail

Configure your client to use the server fastmail-legacy.auth-email.com

For IMAP, use port 993 (SSL).
For POP, use port 995 (SSL).
For SMTP, use port 465 (SSL).

If your client does not support TLS Server Name Indication (SNI), use the following ports instead:

For IMAP, use port 9936 (SSL).
For POP, use port 9956 (SSL).
For SMTP, use port 4656 (SSL).

If your SMTP client can only use opportunistic SSL/TLS (also known as STARTTLS), use the following ports instead:

For IMAP, use port 1436
For POP, use port 1106
For SMTP, use port 5876

Yahoo, Ymail and RocketMail

Configure your client to use the server yahoo-legacy.auth-email.com

For IMAP, use port 993 (SSL).
For POP, use port 995 (SSL).
For SMTP, use port 465 (SSL).

If your client does not support TLS Server Name Indication (SNI), use the following ports instead:

For IMAP, use port 9933 (SSL).
For POP, use port 9953 (SSL).
For SMTP, use port 4653 (SSL).

If your SMTP client can only use opportunistic SSL/TLS (also known as STARTTLS), use the following ports instead:

For IMAP, use port 1433
For POP, use port 1103
For SMTP, use port 5873

AOL and Verizon

Configure your client to use the server aol-legacy.auth-email.com

For IMAP, use port 993 (SSL).
For POP, use port 995 (SSL).
For SMTP, use port 465 (SSL).

If your client does not support TLS Server Name Indication (SNI), use the following ports instead:

For IMAP, use port 9934 (SSL).
For POP, use port 9954 (SSL).
For SMTP, use port 4654 (SSL).

If your SMTP client can only use opportunistic SSL/TLS (also known as STARTTLS), use the following ports instead:

For IMAP, use port 1434
For POP, use port 1104
For SMTP, use port 5874

Xfinity and Comcast

Configure your client to use the server comcast-legacy.auth-email.com

For IMAP, use port 993 (SSL).
For POP, use port 995 (SSL).
For SMTP, use port 465 (SSL).

If your client does not support TLS Server Name Indication (SNI), use the following ports instead:

For IMAP, use port 9937 (SSL).
For POP, use port 9957 (SSL).
For SMTP, use port 4657 (SSL).

If your SMTP client can only use opportunistic SSL/TLS (also known as STARTTLS), use the following ports instead:

For IMAP, use port 1437
For POP, use port 1107
For SMTP, use port 5877

Yandex

Configure your client to use the server yandex-legacy.auth-email.com

For IMAP, use port 993 (SSL).
For POP, use port 995 (SSL).
For SMTP, use port 465 (SSL).

If your client does not support TLS Server Name Indication (SNI), use the following ports instead:

For IMAP, use port 9938 (SSL).
For POP, use port 9958 (SSL).
For SMTP, use port 4658 (SSL).

If your SMTP client can only use opportunistic SSL/TLS (also known as STARTTLS), use the following ports instead:

For IMAP, use port 1438
For POP, use port 1108
For SMTP, use port 5878

VK Mail and Mail.ru

Configure your client to use the server vk-mail-legacy.auth-email.com

For IMAP, use port 993 (SSL).
For POP, use port 995 (SSL).
For SMTP, use port 465 (SSL).

If your client does not support TLS Server Name Indication (SNI), use the following ports instead:

For IMAP, use port 9939 (SSL).
For POP, use port 9959 (SSL).
For SMTP, use port 4659 (SSL).

If your SMTP client can only use opportunistic SSL/TLS (also known as STARTTLS), use the following ports instead:

For IMAP, use port 1439
For POP, use port 1109
For SMTP, use port 5879