Yeah, after Sparrow was killed off I switched to Airmail for OS X (currently using Airmail 2). It&#x27;s not without flaws and I&#x27;m always keeping an eye on the options.<p>On iOS I&#x27;m pretty happy with Microsoft Outlook (can&#x27;t believe I just said that), I haven&#x27;t found anything better yet.<p>I do use multiple accounts extensively so that limits my choices to just those clients that support multiple accounts well (unified inbox, etc).