have a customer looking for about 40 printers, but they require an envelope feeder. They currently are using Kyocera FS-2000d and FS-4020dn but Kyocera doesn't sell envelope feeders anymore. They run less than 1,000 per month per machine on average. They run a 1 or 2 page letter and envelope. Anyone have good luck with any printer for envelopes? They need to have a separate tray for envelopes as well as 11" and 14"? Most machine Bypass does not hold enough, need at least 50 envelopes loaded