mailintel
R
hostingrackspace

Rackspace Email IMAP and SMTP settings

Rackspace Email (not Exchange) uses secure.emailsrvr.com for both IMAP and SMTP, which surprises a lot of migrations.

Connection
IMAP host
secure.emailsrvr.com

port 993 · SSL/TLS

SMTP host
secure.emailsrvr.com

port 465 · SSL/TLS

Username

your full email address
password: mailbox password
Setup

Connect in three steps

  1. 1

    Use the full address as the username.

  2. 2

    Rackspace Exchange mailboxes use different endpoints — check which product the domain is on.

Watch out

What usually breaks

  • Rackspace Email and Rackspace Exchange are different products with different hosts.

  • The same hostname serves IMAP and SMTP; the port selects the protocol.

Detect it

Resolve it instead of hardcoding it

A custom domain on Rackspace Email has the same MX infrastructure as the consumer product. That is what mailintel reads.

rackspace.ts
import { mailintel } from "mailintel";

const result = await mailintel("[email protected]");

result.provider;              // "rackspace"
result.connection.imap;       // { host: "secure.emailsrvr.com", port: 993, security: "tls" }
result.connection.smtp;       // { host: "secure.emailsrvr.com", port: 465, security: "tls" }
result.connection.username;   // "[email protected]"
FAQ
What is Rackspace Email's IMAP server?+

secure.emailsrvr.com on port 993 using SSL/TLS. The username is the full email address.

What is Rackspace Email's SMTP server?+

secure.emailsrvr.com on port 465 using SSL/TLS. Most clients also accept the alternate submission port with STARTTLS.

Does Rackspace Email need an app password?+

Not necessarily — a regular mailbox password works, though a dedicated app password is still a good idea if the provider offers one.