[freebuju]

Fairmail is not meant to be a free-to-use product. I very well remember checking their readME and almost immediately recognizing this fact.

OTOH the "free-tier" is what attracts your interest as bait, probably accounts for the number of app installs visible on the store too etc.

[jorams]

The README has a single section about Pro features, and it starts with "All pro features are convenience or advanced features".

That definitely looks like the non-pro version is meant to be a free-to-use product.

[mgbmtl]

I use the free version and happy with it.