The fastest way to address an individual envelope would be with a simple label printer. Then you just need to print next to the address. As the top space is at a premium we are currently not adding zip codes there too.
https://jlssolutions.com/QA/39/label-printer?show=39#q39
Moshe Weitman of Friends of Harim - Feb 07, 2025
wiznitzer of Yeshiva Imrei Chaim Viznitz - Jan 30, 2025
bkaufman of Kollel Chatzos - Jan 23, 2025
bchigh of Beth Chana School - Jan 22, 2025
sgan menahl of yetev lev - Jan 21, 2025
Kelly Coleman of Yeshiva of Rochester - Jan 21, 2025
Stacy of Derech HaTorah of Rochester - Jan 21, 2025
estis1 of Mesivta of Greater Los Angeles - Jan 20, 2025
bcplgrp of Beth Chana School - Jan 16, 2025
Dr. Goldstein of Derech HaTorah of Rochester - Jan 16, 2025