Unfortunately, because IMAP is incompatible with draft updates, email drafts are not transferred between ProtonMail’s servers and your email client. Therefore, draft messages you compose in the Bridge will only be saved locally on your computer. And draft messages you compose in the ProtonMail web or mobile app will only be saved on ProtonMail’s servers.
Setting up draft folders
Some of our supported email clients do not save email drafts to the local folder by default. Click the links to view instructions to set up draft folders in: