Currently using Thunderbird and have a rule set up that saves any attachment into a specific local folder.
Since I’m planning to move away from Thunderbird, I’m asking if such a feature is available in emClient Windows, too?
Thought this would be a simple question, turns out nobody can answer it 
Since an answer will influence my decision for a lifetime license, I will going to ask the support now!
Currently using Thunderbird and have a rule set up that saves any attachment into a specific local folder.
You can create a rule to automatically or manual move an incoming email with attachments to a custom Local Folder “at the bottom left of eM Client”, but not normally detach the attachment itself to a different folder than the actual email.
That might have been a custom written Thunderbird thing, and i suspect would be an eM Client Sleekplan suggestion for that.
Since an answer will influence my decision for a lifetime license, I will going to ask the support now.
If you are looking to purchase a lifetime license based on that question, you can certainly email [email protected] or [email protected].
Or if you have a current active paid Pro, Personal or Business version, go to the VIP support page and login and lodge a support ticket for that info.