Im not a moderator, but suggest for Postbox users to go to the official eM Client announcement page via the “Community Forum” dropdown to see the list of suggestions as posted already by @Olivia_Rust , where you can then vote for any of those Postbox ideas and also add your own separate ideas if not listed already via the main Sleekplan page under any category you want.
(Help bring the best of Postbox to eM Client) - Direct link
https://forum.emclient.com/t/help-bring-the-best-of-postbox-to-em-client/102083
You can also go to the following Sleekplan url to find “all the full list of suggested Postbox ideas”.
(Sleekplan Postbox suggestion and ideas) - Direct link.
https://emclient.sleekplan.app/?search=postbox
(Sleekplan Share and Vote for Ideas page) with Categories on the right.
