Do Wax Seals Require Extra Postage: Practical Guide
Wax seals do not automatically require extra postage, but their weight, thickness, rigidity, and placement can make a wedding invitation nonmachinable or change its mail class.
Timing & Mailing
When to Send Wedding Invitations: A Timeline From Save-the-Date to Mail Drop
Use this work-backward wedding invitation timeline to coordinate save-the-dates, RSVP deadlines, printing, assembly, postage, and your final mail date.
How Many Stamps Does a Wedding Invitation Need? Weight, Shape, and Extras
One stamp may be enough for a lightweight, machinable wedding invitation, but weight, shape, thickness, rigidity, and embellishments can increase postage.