There are myriad reasons why you should use glue sticks when using vintage postage, and I won’t get into those right now, but just trust me when I say it’s the best way. I have started exclusively using repositionable glue sticks for postage I adhere to envelopes. It’s a type of glue stick made by
Scotch Restickable Glue Stick 0.49 Oz - Office Depot
Removable Restickable Glue Stick, .49oz
Elmer's Re-Stick School Glue Sticks - 2 count, 0.28 oz
Removable Restickable Glue Stick, .49oz
Elmer's Washable Repositionable School Glue Sticks allow for removing and re-sticking works on all types of paper including cardstock, cardboard, foam
Washable Repositionable School Glue Sticks
ELMER'S E4020 CraftBond Repositionable Glue Sticks, 4
Elmer's® CraftBond® Repositionable Glue Sticks
ELMER'S E4020 CraftBond Repositionable Glue Sticks, 4
Scotch Restickable Glue Stick — A Brief Review – The Cramped
Repositionable Glue Sticks [2-Pack / Washable] Ideal for Paper
Elmer's Repositionable Washable School Glue Stick
Removable Restickable Glue Stick, .49oz
Removable Restickable Glue Stick, .49oz
ELMER'S E4020 CraftBond Repositionable Glue Sticks, 4