I think their strategy is free for individuals but paid for enterprise:
https://sparkmailapp.com/pricing
I don't think this model necessarily means that they're selling or harvesting data.
I'm leaning toward [Canary Mail](https://canarymail.io/). Privacy and security are first class design considerations, and it's got good reviews.
Anybody have experience with it to share?
I am a bit on the same boat. I also tried the beta on iOS to help raising issues .. but.. Nothing (surprised?)
I am back on Mail - but feel very harsh after airmail tbh. (But it’s reliable and it does work all the time)
I am looking at Newton as alternative https://newtonhq.com/
I did not jump just yet. Still reading some experience feedbacks.
Let us know your finding!
You might want to read their privacy policy. Sorry, I'm looking for an email client, not an online service that sucks in all my emails and contacts onto their servers.
Airmail for iOS stores credentials on their servers to provide notification support. Airmail for MacOS stores credentials only in the local keychain. Data storage on Spark's servers seems to be non-optional. I'm not into giving out my credentials to third parties.