On my Linux Mint drive, I have configured Thunderbird to do the same thing. I don't use Thunderbird on the W10 drive because it updates constantly and (even I have the updates turned off) I don't trust it not to update. When it does, all of the add-ons I installed become useless and that's no good to me.
Long and short, if it wasn't for some the things I have to use W10 for, I would be a Linux user exclusively. Additionally, I am sooooo tempted to utilize a new email system if one can be found that won't put users thru the kind of crap as explained in this article.
Protonmail.com