I went from Sparrow to Mailbox to Airmail. Sparrow was the best for its time. Mailbox had potential but was riddled with bugs. Airmail doesn&#x27;t have the cleanest interface nor all the coolest features, but it&#x27;s the best option I&#x27;ve found at the moment. For iOS I am still using Mailbox, but I guess now I have to use something else, will probably give the Gmail client a go.<p>One OSX client I&#x27;ve just found that I&#x27;m hoping does what I need: <a href="https:&#x2F;&#x2F;nylas.com&#x2F;N1" rel="nofollow">https:&#x2F;&#x2F;nylas.com&#x2F;N1</a> It&#x27;s open source.