There is also Mailpit[0] in this space. Actively maintained, written in Go, runs from a single static binary, very low footprint. [0]: https://mailpit.axllent.

There is also Mailpit[0] in this space. Actively maintained, written in Go, runs from a single static binary, very low footprint. [0]: https://mailpit.axllent.org/ https://mailpit.axllent.org/