I'm also on Migadu for email, and I can say the experience has been pretty excellent. They have good instructions for setup stuff, and their pricing model is great. The pricing model has things in common with rsync.net, where they impose a soft limit on storage and reach out if you start exceeding it to talk about upgrading.
I do wonder if other mail providers will at some stage support jmap, it seems like it could take away some frustrations.
My favourite one is renaming a directory full of files in
nnn
. It opens in vim, and I'm in my happy place, where I really know how to edit text (or, in this case, filenames). Great when there's some minor variation between a lot of files. Full previewing before saving, multiple operations handled before doing anything etc.