IMAP settings · spectrum.net · charter.net · bresnan.net · roadrunner.com
Spectrum email IMAP settings
Spectrum kept the mailboxes of every brand it absorbed, so charter.net, bresnan.net and old Roadrunner addresses all still work — and all of them connect to the same server, which is named after none of those brands. The host to type is mobile.charter.net, whatever your address ends with.
IMAP connection
- Server
- mobile.charter.net
- Port
- 993
- Encryption
- SSL/TLS
- Username
- full address
- Password
- the mailbox password
Sending, SMTP
- Server
- mobile.charter.net
- Port
- 587
- Encryption
- SSL/TLS
Checked against the service's own autoconfiguration file on 2026-09-15 — the same source Thunderbird reads when it fills the settings in for you. Source: autoconfig.thunderbird.net, www.spectrum.net
What breaks here.
- The host is mobile.charter.net for every Spectrum brand domain. "Mobile" in the name is historical; it serves desktop clients just the same.
- Both directions use the same hostname: IMAP on 993, SMTP on 587, authentication required on the outgoing server too.
- The username is the full address, including the old brand domain if that is what you have.
- A Spectrum mailbox is tied to the internet subscription. Cancel the service and the address goes away — which is the usual reason people migrate this one in a hurry.
Questions
The short answers
Why does the server have "charter" in it?
Charter is the company behind the Spectrum brand. The mail servers were never renamed, so the host stayed mobile.charter.net for all its domains.
Is an app password needed?
No, the mailbox password is used directly.
Which ports?
IMAP 993 and SMTP 587, both encrypted, with authentication switched on for outgoing mail.
I am leaving Spectrum — can I keep the mail?
Move it before the account closes: point the source at mobile.charter.net and the destination at any new mailbox. Messages, folders and dates come across; nothing is deleted at Spectrum.
IMAP settings
Settings for similar services
imap.comcast.netComcast XfinityIMAP for a comcast.net mailbox: imap.comcast.net, port 993, SSL. Why every client fails until you tick one box in Xfinity Email security.imap.mail.att.netAT&T MailIMAP for att.net, sbcglobal.net and bellsouth.net: imap.mail.att.net, port 993, SSL. The account password is replaced by a secure mail key.imap.mail.yahoo.comCox Emailcox.net mailboxes moved to Yahoo in 2024. The IMAP host is imap.mail.yahoo.com, port 993, SSL, and a Yahoo app password is required.secureimap.t-online.deT-OnlineIMAP for a T-Online mailbox: secureimap.t-online.de, port 993, SSL. Mail clients need the separate email-program password, not the Telekom account one.mail.btinternet.comBT MailIMAP for a BT Internet mailbox: mail.btinternet.com, port 993, SSL. One host for both directions, and the older BT domains use the same one.imap.tools.sky.comSky MailIMAP for a Sky mailbox: imap.tools.sky.com, port 993, SSL. The host has an extra tools. level that is easy to miss.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.
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