How do I prepare newsletters for mailing? Does the fold go at the top or bottom? Where must it be sealed?

Answer 1

You can have the fold on either edge, but if the fold is at the bottom you might only need to seal the open side once (depending on how thick it is). If the fold is at the top, you will need to have a seal in both bottom corners so that your mailing will be able to run through the post office's sorting machines correctly.