Because eM Client harvests messages from all folders, suddenly the Blind Carbon Copy (BCC) I keep in my SENT folder means that all conversations now have two copies of any reply I make.
That’s normally how conversations show / work if you BCC to emails. Other mail clients i’ve personally used do the same thing. Sounds like your previous mail client had a unique option within conversions settings not to do that. If there is a way not to do that in eM Client someone will update this thread.
Worse, if I use the “delete the whole conversation” feature, my BCC in the SENT folder will be deleted too.
That’s also normal with other mail clients I’ve personally used when you enable conversation view if you delete the entire conversation, as the sent messages “are all connected to the same conversation” so they also get deleted.
So to avoid that in eM Client, you could instead delete a specific message within the conversation (rather than deleting the entire conversation) by “clicking / expanding the message numbers on the right of the conversation” where then “at the end of each specific message in the conversation” you can individually delete a message and maybe then keep the rest of the conversation you want, to then keep your sent BCC message.
With Categories enabled, new email that’s been classified, for example as, “Other” the message is not visible in the default INBOX folder.
That’s how Category’s work. That’s not a fault. If a new email has been determined to be in a specific Category type, it will then only show in that Category tab & initially also show in the Unread folder within Favourites (unified global folders) till its been read.
If you then want that email to always be in your Primary Inbox for future, you can either “drag the message back to your Primary Inbox Tab” Or “Right click on the subject of the message” and select Category tabs and select your Primary Inbox Tab.
Either way, you will see a prompt confirmation box appear with shortcut keys for future emails. Those emails will then always be in the Primary tab. If its a “non Gmail account” once moved, you will then have a rule created in eM Client to then always move that email to the Primary Tab.