YES! And Mail.app on OS X actually works better with FastMail's Archive than it ever did with Gmail's (in my experience). Here's a screenshot from Mail.app: ht

YES! And Mail.app on OS X actually works better with FastMail's Archive than it ever did with Gmail's (in my experience). Here's a screenshot from Mail.app: https://files.app.net/1/79773/aTOWGMJ-rQ2Js_Edg-CWLi5FsLEVYq6gHDg7hoOrqEbzhj-leQKYvSOJldSlIFDWtfh7MhPL5Bd-wQWdc17X5AXlfT9SYYS-iXKKegr_o6WrjvNse66iE1aD18J0o8r3czxGmwFBzoR5WWEosAZRyZPeUHT_7q_XKmfCmyiKXbaJTk0l1SNINzKhzBaxy-V0p https://files.app.net/1/79773/aTOWGMJ-rQ2Js_Edg-CWLi5FsLEVYq... I either never knew that existed when I tried Mail.app with Gmail or it didn't work. In any case, it works perfectly with FastMail's "Archive" folder.