When comparing aerc vs gnus, the Slant community recommends gnus for most people. In the question“What are the best native e-mail clients for Linux?” gnus is ranked 14th while aerc is ranked 18th. The most important reason people chose gnus is:
Yep, really. From Outlook-mode, where Outlook-typical TOFU mails are “repaired”, up to a high-sophisticated scoring and SPAM filtering, footer lines with quotes, rules depending on the recipient, MIME formatting, boxquotes, etc.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Everything is customizable
Yep, really. From Outlook-mode, where Outlook-typical TOFU mails are “repaired”, up to a high-sophisticated scoring and SPAM filtering, footer lines with quotes, rules depending on the recipient, MIME formatting, boxquotes, etc.
Pro It supports IMAP and POP3
… but you can use DavMail to connect to Exchange server via EWS.
Cons
Con Difficult documentation
Originally a newsgroup reader, so its documentation uses Usenet terminology for everything -- which is confusing.