https://www.envypak.com/ufaq/are-envypak-envelopes-auto-insertable-can-i-test-some/
Are EnvyPak envelopes auto-insertable? Can I test some? - EnvyPak.com
Our envelopes are auto-insertable in a number of sizes and material thicknesses. Our customers have had great success with a wide variety of machines. Test
can ienvelopesautoinsertabletest