mailpot/docs/scratchpad.md

Ideas, plans, thoughts on mailpot.

It'd be better if this stuff wasn't on an issue tracker like gitea's or github's but committed in the repository.

Discussion about these notes can take place in the mailing list, <mailpot-general@meli.delivery>.

In no particular order:

Table of contents:

• Possible Postfix integrations
• Setup docker container network with postfix for testing
• Add NNTP gateways
• Add MIME type filter for list owners
• Add convert_html_to_plaintext filter
• Use mdoc instead of roff for manpages
• Add shell completions with clap
• Make complex database logic and/or complex migrations with user defined functions
• Implement dtolnay's mailing set concept

Possible Postfix integrations

• local delivery with postdrop(1) instead of SMTP
• log with postlog(1)
• sqlite maps https://www.postfix.org/SQLITE_README.html

Setup docker container network with postfix for testing

Beyond integration tests, we need a real-world testcase: a bunch of user postfixes talking to a mailing list postfix. This can be done with a docker setup. A simple debian slim image can be used for this. Reference for postfix on docker: https://www.frakkingsweet.com/postfix-in-a-container/. It'd be great if we could use a Rust based solution as well, with something like https://github.com/fussybeaver/bollard.

Add NNTP gateways

TODO

Add MIME type filter for list owners

TODO

Add convert_html_to_plaintext filter

TODO

Use mdoc instead of roff for manpages

mdoc reference

Progress:

• Got ownership of mdoc on crates.io.
• Forked roff crate to use as a basis: https://github.com/epilys/mdoc

Add shell completions with clap

Probably with https://docs.rs/clap_complete/latest/clap_complete/

Make complex database logic and/or complex migrations with user defined functions

Useful projects:

• https://github.com/facebookincubator/CG-SQL/tree/main
• https://github.com/epilys/vfsstat.rs

Implement dtolnay's mailing set concept

See https://github.com/dtolnay/mailingset/tree/master

A mailing list server that treates mailing lists as sets and allows mail to be sent to the result of set-algebraic expressions on those sets. The union, intersection, and difference operators are supported. Sending mail to a set operation involves specifying a set expression in the local part of the recipient email address.