Command Line Apps alpine

alpine
From the man page:

Alpine is a screen-oriented message-handling tool. In its default configuration, Alpine offers an intentionally limited set of functions geared toward the novice user, but it also has a large list of optional &quot;power-user&quot; and personal-preference features. alpinef is a variant of Alpine that uses function keys rather than mnemonic single-letter commands. Alpine's basic feature set includes:

View, Save, Export, Delete, Print, Reply and Forward messages.

Compose messages in a simple editor (Pico) with word-wrap and a spelling checker. Messages may be postponed for later completion.

Full-screen selection and management of message folders.

Address book to keep a list of long or frequently-used addresses. Personal distribution lists may be defined. Addresses may be taken into the address book from incoming mail without retyping them.

New mail checking and notification occurs automatically every 2.5 minutes and after certain commands, e.g.refresh-screen (Ctrl-L).

On-line, context-sensitive help screens.

Alpine supports MIME (Multipurpose Internet Mail Extensions), an Internet Standard for representing multipart and multimedia data in email. Alpine allows you to save MIME objects to files, and in some cases, can also  initiate the  correct  program  for  viewing the object. It uses the system's mailcap configuration file to determine what program can process a particular MIME object type. Alpine's message composer does not have integral multimedia capability, but any type of data file --including multimedia-- can be attached to a text message and sent using MIME's encoding rules. This allows any group of individuals with MIME-capable mail software (e.g. Alpine, PC-Alpine, or many other programs) to exchange formatted documents, spread-sheets, image files, etc, via Internet email.

Alpine uses the c-client messaging API to access local and remote mail folders. This library provides a variety of low-level message-handling  functions, including drivers for a variety of different mail file formats, as well as routines to access remote mail and news servers, using IMAP (Internet Message Access Protocol) and  NNTP (Network News Transport Protocol). Outgoing mail is usually posted directly via SMTP (Simple Mail Transfer Protocol).