Sync labels between Proton Mail and SimpleLogin
I find it difficult to organize emails from a SL alias. I do not know if this is feasible but if I could choose to add Proton Labels in the SimpleLogin UI to the alias that show up in Proton mail, then I could use a filter to move/mark emails.
Currently, I have to manually open the filter and add the new alias to perform any moves/marking of the email, and this is a repetitive task. If SL added labels to the email, then it would reduce the manual labor/upkeep.

-
voyager2bird commented
A possible alternative would be to BCC the email linked to the SL mailbox, then a filter could be set up to based on the linked email. That way I could use Proton aliases to organize incoming SL emails using a filter on the linked email in the BCC.
Proton Alias 1 = SL Mailbox 1
Proton Alias 2 = SL Mailbox 2When receiving an email from SL Mailbox 1 and if it had the Proton Alias 1 as a BCC, I could then apply a filter to move, mark, label, etc.
The only issue is on a reply-all, I would have to remove the BCC email. If it's feasible to add a Proton Email setting to remove BCC when reply-all.