Having just migrated to eM Client I am very happy but can still find the odd idea to contribute!
My first is about to be addressed in version 7 I think - this is to group all replies and mails based on an original message together (thread or conversation). So I look forward to the upgrade.
When creating and sending a mail I would really like to be able to specify the folder in which it should be filed rather than simply kept in the sent folder - this requires me to go find them and refile at some stage.
Just noticed that when searching for mail the results do not show where each message in actually stored - it would be nice to know in which folder the results are residing.
I hope these help and thanks for a great application - I will be a paid up member once a few more stable days have passed!