Sorting by date, sender, subject, subject A to Z or Z to A
Every other email I've used allows sorting by date, sender, subject. A to Z or Z to A (not the same as filtering by key word)

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Anonymous commented
Please add a button to sort emails by Sender
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Jarin Udom commented
I would love to have this feature, sorting by sender is extremely useful for clearing out large amounts of unread email.
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Anonymous commented
Would be nice to sort by subject as well.
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Helge Berland commented
There is already a feature to sort mail by date or by size, but it would be very nice to be able to sort by contact or sender. (Very few providers or clients have this functionality, unfortunately...)
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Geert commented
I use labels to quickly categorise my inbox, and sorting by label would make it even better. Sorting by other options would be nice as well (date, etc.).