4 min
0
Can You Use Forever Stamps on Packages? USPS Rules
Yes, valid Forever stamps can pay package postage, but the full rate and any surcharges…
Category: Mailing Guides
Practical postage guidance for letters, postcards, invitations, weight, shape, machinability, and international destinations. Begin with How Many Forever Stamps Do I Need?, or return to the Forever Stamps category.
3 min
0
How Many Forever Stamps to Canada? 2026 Letter Rates
Exact 2026 USPS postage to Canada for letters and postcards, with Global Forever and regular…
3 min
0
How Many Stamps for a Large Envelope? 2026 Rates and 9×12 Examples
A weight-by-weight 2026 guide to postage for large envelopes and 9×12 flats, including when a…
3 min
0
Nonmachinable Mail: Square, Rigid, and Uneven Envelopes
Learn what makes a letter nonmachinable, the 2026 $0.49 surcharge, when rigid pieces pay package…
3 min
0
Can You Use Multiple Forever Stamps? Exact Postage Examples
Yes, you can combine genuine Forever stamps. See 2026 examples, when extra stamps overpay, and…
3 min
0
Postcard Stamps vs. Forever Stamps: Value and Uses
Compare Postcard Forever, regular Forever, and Global Forever values, including when a postcard needs letter…
3 min
0
Wedding Invitation Postage: How Many Stamps Do You Need?
Calculate wedding invitation postage with 2026 USPS prices, including two-ounce suites, square envelopes, wax seals,…
3 min
0
First-Class Mail and Forever Stamps: What One Stamp Covers
Are Forever Stamps First Class? Learn what one $0.82 stamp covers in 2026 and when…
2 min
0
Global Forever Stamps: 2026 International Price and Rules
What a Global Forever stamp covers in 2026, when more postage is needed, and separate…
2 min
0
How Many Forever Stamps Do I Need? 2026 Letter Examples
Calculate how many 2026 Forever stamps a domestic letter needs by weight, shape, and mail…