It’s the first thing your guests see in their mailbox. What better way to make your marketing pop with excitement to open a fancy Invite 5 x 7 Postcards with a personalize envelopes. They’re perfect for Fundraising, Dinner Invite, and Holiday cards. We can create a custom sizes that will fix your needs with premium stocks (including recycled!) and. Let us take care of the list-processing, envelope addressing and mailing.