To set up Mutt with Runbox, add the following to a file named .muttrc in your home directory:
set imap_user = "username"
set imap_pass = "password"
set smtp_url = "smtp://email@example.com:587/"
set smtp_pass = "password"
set ssl_starttls = yes
set from = "firstname.lastname@example.org"
set realname = "Your Name"
set folder = "imaps://mail.runbox.com:993"
set spoolfile = "+INBOX"
set move = no
You can now run Mutt by entering mutt at the command prompt. Then type ? for help, and q to quit.
Note: If you are using your own domain with Runbox, your smtp_url must be entered as follows:
Mutt will translate %25 to %, which is the character Runbox uses to separate localparts from domain names.