A:Answer Yes, you can print varying sized envelopes and you can move the guides to hold them properly in place in either the paper drawer (if you're printing lots of them at a time) or the paper tray (the slot on the front.) I've printed both #6 and #10 envelopes and, according to the manual, you can print: Envelope No.10 (COM10), Envelope Monarch, Envelope C5, and Envelope DL. There are also custom sized paper settings you can use, but I've not tried those with envelopes.