The Xerox WorkCentre 7500 series would be a better option for you. There’s an optional envelope tray that replaces Tray 1 that you can install yourself. The tray holds approx. 60 envelopes for printing. The envelopes supported through the bypass tray are those without windows and in sizes Monarch, DL, C5, and No 10 (other custom sizes are supported as well).
Hope that information helps. I am social marketing specialist for the Xerox Enterprise Business Group. Let me know of any other questions.
I currently own a Xerox Work Center 7775. It does great on everything except for printing #10 regular 24# white wove envelopes. It wrinkles them. I own a printing company and need a printer that will print #10 envelopes and not wrinkle them. What do you suggest?