Most wedding checklists still say to mail invitations six weeks out. That number comes from a period when transit times were shorter and people replied to post.
Mail at six weeks now and you spend the last three chasing a headcount — which is exactly the stretch when you have the least attention to spare.
Mail early, mail heavy
Where standard advice says six to eight weeks, use 10–12 weeks. Three reasons, all practical:
- The fridge effect. An invitation that lives on a refrigerator for a month builds anticipation. One that arrives in a rush is an obligation.
- Loss buffer. Assume around 2% of a mailing goes astray. Mailing early means you find out with time to re-send.
- Reply window. You want responses back by four weeks out, and guests take longer than anyone plans for.
Best deals on Forever stamps
Save-the-dates: six to eight months
Twelve months for a destination wedding. And use a surplus one-ounce Forever stamp at about $0.62 rather than a postcard stamp at $0.56.
The $0.06 difference buys better handling. Postcard-rate pieces get machine-cancelled directly across the face, which on a photo save-the-date means a cancellation line through someone's face.
The procurement sequence
| When | Action | Why then |
|---|---|---|
| 3 months out | Buy all postage | Popular designs sell out; buying late means taking what is left |
| 2 weeks before mailing | Weigh an assembled suite | Catches the two-ounce surprise before stamps are applied |
| Mailing day | Take them to the counter | Request hand-cancelling rather than dropping in a collection box |
Set the reply deadline early on purpose
If the venue needs numbers by 15 May, print 1 May on the card. The two-week gap absorbs the guests who reply late, and there will be more of them than you expect.
International guests get four extra weeks
Mail overseas invitations four weeks before the domestic batch, with a Global Forever stamp at $1.65. Do not approximate this one — being five cents short means your guest receives a postage-due notice instead of an invitation.
The re-send trap
Returned invitations create urgency, and urgency is when people buy stamps from a "50% off" social media ad. Those are counterfeit; the re-sends get seized, and the guests conclude they were never invited at all. Service conditions worth checking are posted in the USPS service alerts.
Where to buy
The USPS official store, or a verified surplus channel such as Forever Stamp Center — bought at three months, not on the day you discover you need them.
The short version
Twelve weeks domestic, sixteen international, save-the-dates at six to eight months, all postage bought at three months, and a reply deadline two weeks earlier than you actually need it.
More on buying Forever stamps
- 👉 Can US Postage Stamps Be Purchased Online? A Real American Story of Trust, Convenience, and Planning
- 👉 The Offline Fortress: How Stamps Ensure Operational Continuity During System Outages
- 👉 What One Nonprofit Learned About Email and Envelopes
Retired USPS mailroom supervisor with 30 years of service in Chicago. He now contributes columns on Forever Stamps, sharing trusted advice on spotting counterfeit risks and finding reliable discount deals for everyday mailers.
