Spark is probably the best email app I've found. my inbox always remains clean.
Brilliant to say the least, Now they have a windows solution its better than perfect
Suddenly started crashing very frequently on my Windows laptop. After +1 month, 2 log reports sent to their support and several updates installed, still the same problem. I was going to pay for a premium account, but I've decided to migrate instead, it's unusable now.
A clear easy to use email client that separates emails so they are more usable.
I believe the UI has made it more complicated than necessary. The previous version was much better at showcasing and separating emails.
On its own, I'd use Apple Mail. But with a team of people collaborating, Spark is very hard to beat. Impressive.