1&1 IMAP SETTINGS
Here you will find the IMAP settings for 1&1. IMAP
servers are also referred to as incoming mail servers. The
POP3 and SMTP settings for 1&1 Mail can be found
The Internet Message Access Protocol (IMAP), originally
called the Interactive Mail Access Protocol, is a network
protocol that provides a network file system for Emails.
IMAP extends the functions and procedures of the Post Office
Protocols (POP) in a way that enables users to save their
mails, folder structures and settings on the mail servers.