First-Class Mail
Fast, Accurate, and Reliable Mail
Fast, Accurate, and Reliable Mail
Business-Critical Mail
USPS First-Class Mail offers the professionalism and credibility your customers expect.
First-Class USPS Mail
As low as $1.23 each
- Printing: one or both sides of the page (simplex/duplex)
- Paper Stock: multiple color options available
- Ink Color: black-and-white or full-color printing
- Pricing: all inclusive of printing, handling, and postage
LetterStream’s online platform offers a comprehensive set of print and mailing options. Choose a mail type (First-Class, Certified, Postcard, or FedEx 2Day), upload your file and address CSV file and we will handle the rest.
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Account Features
As low as $1.23 each
- Addresses can be included in fileMust be aligned properly to fit our double-window envelope
- PDF checking toolEnsure your document is correctly prepared
- Using and uploading CSV filesEnsure mailings are successful and addresses show through envelope windows
- Automatic alignment checkingA cover sheet is added if there’s an alignment issue with either address
- Double Window EnvelopeLetterStream uses a standard business double window envelope
Print Options
- Single-sided or duplex (double-sided) printing
- White or colored paper stock
- Black or full-color printing (ink)
- Return or remittance envelope insertion — choose with or without a pre-applied postage stamp
- Include a message on envelope (called an endorsement line)
- Double-windowed envelope can fit up to 14 pages. Need more? Select the Flat 9″x12″ envelope option for quantities up to 75 sheets of paper
- Add USPS Certified Mail tracking (additional fee). Just select the certified checkbox.
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Pricing
- Prices INCLUDE printing, folding, insertion, AND postage
- USPS First-Class Mail starts at $1.23 each (single sided, black and white)
- Add .12¢ for additional side black-and-white printing
- Add .03¢ for color paper (per sheet)
- Add .32¢ color printing per side
- Add .15¢ for a return envelope
- Add .98¢ for a return envelope with a First-Class stamp
- Add .29¢ for each additional ounce (we’ll help you determine pricing)
- Add USPS Certified Mail tracking with Electronic Return Receipt (ERR) as low as $11.16 each
Price Includes Postage

First-Class Mailing
Example: 1 page-
1 sheet of paper
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Black-and-white printing
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1 sided only
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Standard white paper stock

First-Class Mailing
Example: 75 pages-
75 sheets of paper
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Black-and-white printing
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1 sided only
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Standard white paper stock

First-Class w/Return Envelope
Example: 1 page-
1 sheet of paper
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Black-and-white printing
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1 sided only
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w/ Return envelope

First-Class Certified Mailing
Example: 1 page-
1 sheet of paper
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Black-and-white printing
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1 sided only
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Tracking in your account
Frequently Asked Questions
What Happens If My First-Class Letter Is Undeliverable?
Undeliverable First-Class mail is typically returned to the sender by the USPS as soon as a delivery issue is identified.
What Are The Return Address Requirements for First-Class Mail?
Return address is required.
To ensure undeliverable mail is returned, you must include a complete and correct return address on the envelope.
What Are The Limitations Of First-Class Mail?
First-Class Mail does not offer tracking or delivery confirmation, and there is no proof of delivery if the recipient claims they did not receive it.
There is a weight limit of 13oz. per #10 double-windowed envelope. LetterStream can print and insert up to 14 pages (duplex) in one envelope under this weight limit.
You may add Certified tracking to any First-Class mail by selecting the checkbox when creating your mailing. Certified Mail is an additional fee.
What Alternatives Should I Consider For Important Mailings?
Certified Mail or FedEx 2Day both offer tracking.
For critical mailings, consider using Certified Mail for tracking and delivery confirmation, or FedEx for faster delivery and advanced tracking.
What is the First-Class Letter Weight Limit?
There is a weight limit of 13oz.
#10 Double-window Envelope: LetterStream can print and insert up to 14 pages (duplex = double sided) in one envelope under this weight limit.
USPS Flat Envelope: LetterStream can print and insert up to 75 pages (duplex= double sided) in one flat envelope under this weight limit.
For each additional ounce over 13.oz it is an additional .29¢
How Do I Calculate The Correct Postage?
LetterStream pricing includes all postage, printing, insertion, and mailing.
Just upload your document and we handle the rest.