I've been using Airmail for a while, and it's very functional; sort of a spiritual successor to Sparrow. The other Gmail-on-OSX clients I've tried don't feel r

I've been using Airmail for a while, and it's very functional; sort of a spiritual successor to Sparrow. The other Gmail-on-OSX clients I've tried don't feel ready for prime time in comparison. (Again, no affiliation; just like the product.)