LetterStream is an online print-and-mail service. Users upload a documents, add recipient addresses, pick mailing options, and from there LetterStream prints, inserts, and provides it to the USPS or FedEx for delivery. You don’t need to leave your desk! You can now avoid the Post Office!

You can send various types of mail through your LetterStream account, such as: 

• USPS First-Class Mail: Regular letters without tracking or proof of delivery. 

• USPS Certified Mail: Includes tracking and optional proof of delivery via Electronic Return Receipt (ERR). 

• Postcards: Available in 2 different sizes, with the same delivery speed as First-Class Mail. 

• Coupon Booklets: For recurring payments, sent via First-Class mail. 

• FedEx 2Day Mail: Fastest sending with tracking and optional proof of delivery via Electronic signature (FedEx 2Day is only available for pre-approved businesses). 

• Registered Mail: For international mailings that require tracking.

LetterStream offers several ways to include our services in your member benefits:

Link to the LetterStream website: https://www.letterstream.com/

Sign up and use our API within your software platform (three API modes available): https://www.letterstream.com/API

Use one of LetterStream’s existing apps or integration partners, or integrate LetterStream into your preferred software

Yes. LetterStream offers three API modes for monetizing our mailing solutions.
Check out: https://www.letterstream.com/api

Our three modes include:
Partnership
Automation
Monetization

Help your members take advantage or The Stream to make their mailings a breeze. They will love you.

Simply create a free account, click Send Letters, and follow the steps from there! You’ll be able to provide your document(s) addresses, select your mail type (e.g., First-Class, Certified, etc.), review your proofs, and then submit!  

Most jobs can be built in just a couple minutes regardless of mailing size or quantity. LetterStream can send one to many efficiently.  

We guarantee a 2-business-day mailout, although you’ll find that we’re really fast, so many jobs go out before the guaranteed mailout date. 95% of all LetterStream mail is sent by next business day. 50% of all LetterStream mail is sent the same day. If you need a guaranteed faster mailout, choose: 

• Expedite processing: next business day mailout 

• Rush processing (before 3pm Arizona time): same business day mailout 

These timeframes are based upon LetterStream production and hand-off to USPS or FedEx. Each option is shown in your shopping cart with its exact mailout date included. 

It’s as simple as creating a free LetterStream account, clicking Send Letters, and selecting USPS Certified Mail service (with or without the Electronic Return Receipt). 

1. Select Send Letter(s)
2. Once your document is uploaded, select Add Certified Mail services (Tracking).
3. Additional options are adding Electronic Return Receipt (ERR), or Add Registered Mail service (International mail only) for an additional fee.

No. LetterStream handles printing, inserting, sealing, postage, and then provides your mailing to the USPS for delivery. You can complete everything from anywhere in the world (as long as you have internet access).

Your account includes mailing history and the USPS tracking updates. If you choose to include the Electronic Return Receipt, you’ll also receive proof of delivery upon successful delivery. 

1. All Certified Mail tracking can be viewed from within your LetterStream account.
2. No more tracking forms to file or potentially lose.
3. LetterStream keeps these documents longer than the USPS
4. Tracking within your account makes managing Certified Mail for individuals or teams easy and efficient.

Address lists must be uploaded as comma-separated values (CSV) files. For documents, we recommend uploading portable document format (PDF) files, but other common formats are also accepted such as Word and Excel. 

Absolutely. LetterStream supports automation via the web portal, apps/integrations, and an API so companies can trigger mail from other software or internal systems, eliminating manual steps. 

You can send anywhere from one to one million letters at a time!