New Postage Available for Square Envelopes {Ideas and Information}

We always get a lot of questions about how much our wedding invitations cost to mail, while the answer really varies depending on the weight and size of the final piece. You can weigh your invitation and estimate the cost by going to the USPS website but you also have to factor in extras such as the size and shape of your envelope (absolutely check with your local post office before purchasing postage!). The majority of 5×7 invitations we do are 2oz on average and cost about $0.61 in stamps. What better way to greet your guests right out of their mailbox, than with personalized postage!?

Envelopments is now offering custom postage to match their patterned papers, and you can also get custom postage from us on If you don’t see something you like let us know and we are happy to create a custom stamp for you!

The 5×5 and 7×7 square shapes do require a surcharge since they are square instead of the rectangular, so the post office will charge and extra “non-machinable” rate for these. But they do now offer a $.64 stamp just for the square greeting cards as long as they are under 1 ounce.

Some info from the website:

Using the Butterfly stamp
Today’s high-tech letter sorting technology enables machinable First-Class Mail letters to be processed at a cost of 44 cents for the first ounce and 17 cents for each additional ounce up to 3½ ounces. Non-machinable letters such as square envelopes, envelopes with the address parallel to the shorter dimension, and envelopes containing odd-shaped items cannot be processed on today’s high-speed mail sorters and a 20-cent non-machinable surcharge is applied for the additional handling costs.

The 64-cent Butterfly stamp incorporates the non-machinable surcharge and can be used for square greeting cards and other non-machinable envelopes weighing up to one ounce.

For more information on the USPS guidelines, visit this link here:

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