Custom Stamps
Due to the new guidelines set forth by the United States Postal Service (USPS), the only stamp we can currently recommend is from https://www.usps.com/ship/custom-mail-stamps.htm or https://www.stamps.com/ (owned by USPS).
It is highly recommended to have the USPS facility assess proper postage fees on an assembled invitation before buying stamps.
NOTE:
For mailing tips, hover your pointer over the "About Us" button at the top, and click the tab labeled "Helpful Tips".