If you can figure out how to utilize AI, surely you can figure out how to implement bilateral inbox sorting
Estimated from the grossing charts of Oct 21, 2026 in the 53 countries we track, and ratings growth on the App Store.
From our daily snapshots of every grossing chart.
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Measured from the store, not estimated.
Latest reviews, United States App Store.
If you can figure out how to utilize AI, surely you can figure out how to implement bilateral inbox sorting
Now generates ‘firewall’ issues which it never used to have and no other apps on my computer generate. Just doesn’t work anymore at all.
Almost every day the logged in accounts get logged out.
*Update 9/29/2026* Changing my review back to 5 stars now that Readdle has updated Spark to support the new Microsoft account! Getting it updated took way longer than it should have, but at least Readdle listened to their users and changed course instead of forcing users on to the new (and far inferior) Spark Desktop app. So thank you!
The “classic” app was the best mail app out there, but stopped working with Microsoft accounts, so I was forced to “upgrade” to the newer Desktop-AI version. The newer one is terrible - unintuitive, overblown, clunky and hard to use. As of October 2026, Microsoft is changing how their accounts work (according to Spark customer service) which should allow us to use the better “classic” app again. So thankful!
They stoped supporting outlook to force users on to the new horrible version.
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Released Nov 30, 2016. Current version shipped Oct 3, 2026.
Prices, ranks and reviews are per country. Revenue above is already worldwide.