The Unclear Impact

I should try and set up a sane e-mail client for myself with

• plain text,
• proper gpg support (including support for the “pseudo-Protonmail” setup, where otherwise unencrypted mail is encrypted with a public key generated for just this purpose before stored on the server, but such mail should generally be answered in plain text),
• nntp starttls support,
• highlight and apply diffs,
• archive and process invoices with

Thinking about #notmuch in #Emacs with some way to fetch mail from imap and nntp and a bit of #elisp to glue all this together. However, I’d miss

• RSS support (there’s #elfeed, but I’d prefer not having separate interfaces),
• Exchange calendar synchronization,
• multiple CalDav calendar synchronization,
• Exchange contacts,
• CardDav contacts,
• accepting calendar invites from e-mail

from #Thunderbird. Looks like I’d need a way to fetch RSS into the local maildir and somehow make #orgmode talk to the messed up setup we have at uni for calendar and contact sharing.