I’ve made a command line interface for Mastodon that spills text of any length with media of any number onto Mastodon.
It can also get the timeline of a user and run it through a Go text template (e.g. to frankenstein it onto an RSS reader).
Note to self: To set up postfix to accept mail for multiple domains and put that in the same maildir, add the new alias and domain to /etc/postfix/aliases, run postmap, add the new domain to ‘virtual_alias_domains’ in main.cf and reload the service.