Not a problem Pete... hope you could use them..
Pete you say you get angry but why not put a note in with your records... explaining that you use 2nd hand mailers at times because of recycling... most mailers end up in the bin so surley a mailer that has been used 3 or 4 times is better than keep sending a new one out... as long as it is in decent condition..
Blimey have I just gone all green...
I had a record turn up once from the states in an old cut up cardboard apple box that was only 6.5 inches square!!!!