LetterAgent
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Print the newsletter as pages inside a standard envelope rather than folding it into a self-mailer: unsealed folded pieces get caught in sorting machines, and photo inserts push both weight and postage up. Mail in early December, weigh one finished copy before buying postage for the batch, and skip square envelopes, which need extra postage in the US.
| Format | Pros | Cons |
|---|---|---|
| Pages in a standard envelope | Protects the newsletter; machines handle it normally; photos stay clean | Envelope cost; slightly more assembly |
| Folded self-mailer (no envelope) | No envelope to buy; one piece to print | Folds must be sealed with tabs or glue or the piece jams; address shows through printing less reliably |
| Tri-fold in a long business envelope | Cheapest envelope option; fits a standard letter fold | Limited room for photos; feels less like a "newsletter" |
A self-mailer is any piece that is folded and mailed without an envelope, and the US Postal Service treats it as a piece that wants to come apart in the machinery. Folded booklets and self-mailers must be sealed with wafer seals (tabs) or glue spots along the open edges; the number and placement of tabs depends on the fold pattern and weight. An unsealed or under-tabbed self-mailer can be rejected, surcharged, or torn open in sorting. Canada Post has similar unsealed-mail requirements. Unless you enjoy reading postal specifications, the envelope route is the simpler life.
Two ways: weight and rigidity. A 4x6 photo printed on heavy stock plus a card can push a letter over the one-ounce threshold into the next postage band, and a stiff photo makes the envelope rigid, which in the US can trigger the nonmachinable surcharge on top of the extra ounce. The fix is to print photos as part of the newsletter pages instead of inserting separate prints: one multi-page document weighs less and flexes more than a letter plus loose photo prints. Whatever you do, weigh one finished copy with everything inside before you buy postage for the whole batch.
Early December, full stop. The holiday mail surge starts building in the second week of December and peaks the week before Christmas, and a newsletter is exactly the kind of nice-to-have that gets deprioritized behind gifts and cards when the system is strained. If your newsletter includes an invitation to a holiday event, work backward from the event date and mail at least two weeks before it, three if any recipients are international. Canada's holiday volumes follow the same curve.
If the newsletter fits LetterAgent's format, yes: describe it to your AI assistant, approve the exact quoted price, and it is printed and mailed to US or Canadian addresses. The constraint to keep in mind is that LetterAgent sends printed letters with no inserts, so your newsletter, photos included, has to be the document itself: a two- or three-page letter-style newsletter works perfectly; a bundle with a separate photo print and a magnet does not.
Ready to mail it? Send your letter with LetterAgent: describe it to your AI assistant, approve the exact quoted price, and it is printed and mailed.
LetterAgent is a working name. Prices include print, postage, and our service fee. US prices in USD, Canadian prices in CAD (Canadian prices exclude applicable sales tax, added at checkout). Currently in private testing.
Need help? Ask your assistant: it can check a job's status any time. If it ever can't handle something: hello@getletteragent.com