If you need to re-open an envelope that you have already sealed and put a stamp on, there's no need to steam the flap open. Just cut the end off the front left side of the envelope (where your return address is, not the end with the stamp on it). Tap the envelope on the table to make the contents drop away from the edge. All you have to cut off is a piece about 1/16 inch wide. Then you can pull out the contents, fix it, and slide it back in the envelope.
Close the end with a piece of frosted (preferable) or clear tape folded over the edge, making sure to press all the tape down, and leave no sticky part exposed. Trim off any excess tape. This is easier, neater and faster than trying to re-open the flap. I avoid the end with the stamp because you shouldn't cover any part of a stamp with tape, so it can be canceled.
By Pixiedust7 from Wantagh, Long Island, NY
This page contains the following solutions.
If you seal up a envelope then realize you forgot to put something in it, place it in the freezer for about one hour. It will then unseal easily. Just put tape over the envelope or close up with a pretty sticker or one of your address label.
If you seal an envelope and realize you have forgotten to include something inside, just place it in the freezer for an hour or two. The envelope will unseal without a trace!
ThriftyFun is one of the longest running frugal living communities on the Internet. These are archives of older discussions.
I forgot to insert a check into an envelope after I sealed it up. Does anyone have any idea on how to loosen the glue?
Forgot to put the check (or other item) in the envelope before sealing it? Instead of tearing it open, use scissors to cut a THIN strip off one narrow end.