Uncomplex has released Mailplane 3.6.6, which is ready for macOS 10.12 Sierra. The Gmail-specific email client also now enables you to set a default sender account (handy if you want to use one of several accounts to send messages), ensures that attachment uploading works as expected, prevents drafts from being lost by accident, and adds a Create Calendar Event shortcut. A quick 3.6.7 update tweaks Mailplane’s attachment uploading to work with another change from Google. ($24.95 new, free update, 23.4 MB, release notes, 10.10+)
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