Get your contents ready to mail, and put the items in the envelopes.
Seal the envelopes, and make sure they are addressed correctly.
Put your envelopes in the outgoing mail. Postage has been paid by the organization that made or provided the envelopes. Organizations create these Business Reply Mail envelopes to make mailing faster and simpler, encouraging the potential customer or patron to use the envelopes and to participate in the associated campaign.