IMAP settings · emailsrvr.com
Rackspace Email IMAP settings
Rackspace hosts mail for other people's domains, so the server never carries your own domain name: both directions go to secure.emailsrvr.com. That single fact accounts for most failed setups — the client is pointed at mail.yourcompany.com, which has nothing listening on it.
IMAP connection
- Server
- secure.emailsrvr.com
- Port
- 993
- Encryption
- SSL/TLS
- Username
- full address
- Password
- the mailbox password
Sending, SMTP
- Server
- secure.emailsrvr.com
- Port
- 465
- Encryption
- SSL/TLS
Checked against the service's own documentation on 2026-09-15: it publishes no autoconfiguration file. Source: docs.rackspace.com
What breaks here.
- The host is secure.emailsrvr.com, not anything under your own domain, however the address looks.
- The same hostname serves both IMAP on 993 and SMTP on 465, both with SSL.
- The username is the full email address; Rackspace mailboxes are not addressed by a short name.
- Rackspace Email and Microsoft Exchange sold by Rackspace are different products. An Exchange mailbox does not use these hosts.
Questions
The short answers
What do I put in the server field?
secure.emailsrvr.com for incoming and outgoing alike: IMAP 993 with SSL, SMTP 465 with SSL.
Is an app password needed?
No, the mailbox password is used directly.
Why does mail.mydomain.com not work?
Because nothing answers there. Rackspace serves every customer domain from its own hosts, and secure.emailsrvr.com is the one to use.
Can I migrate a Rackspace mailbox to Microsoft 365 or Google?
Yes, over IMAP — messages, folders, flags and dates move across, and the Rackspace mailbox is left untouched.
Find out how big your mailbox is. It costs nothing.
Connect two servers, look at the size and decide. Or take the client and keep everything on your side.
Code on GitHub · built on imapsync · no sign-up