For other Peru missionary moms . . . .
The white envelopes are the flat rate envelopes from the post office. I pack them full and then tape them up real good. I print mailing labels off my computer and include pictures of the Savior. He has received every package we have sent within about 2 weeks. If I can't fit it in a flat rate envelope or padded envelope and keep it under four pounds - I send it to Vanessa in Salt Lake to ship. Hope this helps.