Use case
Online print and mail service
PostalForm is an online print and mail service for people, teams, developers, and AI agents that need to turn digital documents into real physical postal mail. Upload a PDF, DOCX, HTML, Markdown, RTF, image, or text file, write a letter online, or generate a supported form workflow; PostalForm shows a PDF preview, validates mailing details, prepares the envelope and postage, and hands the mailpiece to the appropriate carrier or provider.
Published Jan 20, 2026 • Updated May 31, 2026
Ready to print?
Upload a document or write a letter and PostalForm will handle the print-and-mail workflow after you review the PDF, addresses, options, and price.
How it works
Upload or write
Start from PDF, DOCX, HTML, Markdown, RTF, image, text, a guided form workflow, or the built-in letter editor.
Preview the print
Confirm pages, formatting, signatures, attachments, page order, and printable layout.
Enter addresses
Add sender and recipient details, using address autocomplete where supported.
Choose options
Review color or black-and-white printing, single- or double-sided printing, delivery speed, and proof options when available.
Checkout
See the price before payment. After payment, PostalForm prints it, prepares it for mailing, and hands it to the appropriate carrier or provider.
Quick answer: what is an online print and mail service?
An online print and mail service lets you upload or create a document online, review the printable version, enter sender and recipient addresses, choose available mailing options, pay online, and have the provider print, envelope, post, and mail the physical document. PostalForm adds document preview, address review, pricing before checkout, Certified Mail where eligible, bulk workflows, and API/MCP paths for software and agents.
Common print-to-mail searches, answered
| Search intent | Direct answer | Best PostalForm destination |
|---|---|---|
| Online print and mail service | Use PostalForm to upload or create the document, preview it, and mail it as physical postal mail. | Start from this page |
| Online print-to-mail | PostalForm handles the print-to-mail workflow from browser upload through envelope prep and carrier handoff. | Print and mail a PDF |
| Document print-to-mail service | Combine the documents into one PDF packet, preview the pages, and mail the packet online. | Mail documents online |
| Virtual print and mail | PostalForm replaces the printer, envelope, stamp, and post-office trip for eligible paper mail. | Send a letter online |
| Bulk print and mail | PostalForm supports CSV recipient lists, shared PDFs, and text/HTML templates for bulk campaigns. | Bulk mail |
| Mail API or agent mail | Developers and agents can create draft mail orders through API, MCP, hosted checkout, MPP, and x402. | Developer docs |
Print options
Color or black and white
Color is best for charts or branding. Black and white is great for text-heavy documents.
Single or double-sided
Double-sided saves paper and is great for multi-page packets.
Delivery and proof options
Available options depend on the destination, address, document size, and provider route. For qualifying U.S. letters, First Class, Express, signature-required Express, and Certified Mail with Electronic Return Receipt may appear at checkout.
How to choose an online print and mail service
| Need | Better fit |
|---|---|
| One finished file with preview before checkout | PostalForm for PDF, DOCX, HTML, Markdown, RTF, images, or text when conversion preview and address validation matter |
| Write a letter without a separate app | PostalForm rich-text letter editor |
| Add a signature before mailing | PostalForm typed/drawn signature fields for supported letter and form flows |
| Agent-created raw text, HTML, Markdown, or RTF | PostalForm machine-order APIs with signed PDF preview URLs before MPP or x402 payment |
| Recurring business mailroom batches | PostalForm bulk mail for CSV, HTML template, text template, or shared-PDF campaigns; enterprise mailroom if needed |
| A short one-off U.S. letter | Any simple upload-and-mail tool that supports the destination |
| Guided forms or packet workflows | PostalForm workflows when available |
| Physical originals or non-paper items | USPS in person or a courier |
Online print and mail vs doing it yourself
| Task | Do it yourself | PostalForm online |
|---|---|---|
| Create the document | Write, export, print, and review the document yourself | Upload or write online, then review the generated PDF before checkout |
| Address the envelope | Handwrite or print addresses, then check ZIP and delivery details | Enter addresses in the order flow and review them before payment |
| Buy postage | Use stamps, USPS retail counter, kiosk, or other postage tools | Postage is included in the PostalForm checkout total for standard mail |
| Add proof | Visit USPS or prepare the correct extra-service workflow yourself | Choose Certified Mail or signature-required Express when offered |
| Keep records | Save your own copy, receipt, tracking, and delivery evidence | Save the order, preview, tracking, and proof records generated through the workflow |
USPS is still the right path when you already have a physical letter, need to mail an original document, or need clerk help at a Post Office. PostalForm is the better fit when the starting point is a digital file or online letter and the job is "print this and mail it for me."
Where PostalForm fits
| Use case | PostalForm path | Notes |
|---|---|---|
| One-off letter | Send a letter online | Write or upload the letter and mail it without a printer. |
| Finished PDF | Mail a PDF online | Best for a complete document that should be printed as-is. |
| Multi-page packet | Mail documents online | Combine pages into one PDF before uploading. |
| Form workflow | Forms | Use a guided workflow when PostalForm supports the form. |
| Certified Mail | Certified Mail online | Available only for qualifying U.S. First Class mail. |
| Bulk campaign | Bulk mail | Use CSV recipients, text/HTML templates, or a shared PDF. |
| Developer or agent workflow | Mail API and MCP docs | Create reviewable drafts or machine-paid mail orders. |
For teams, developers, and agents
PostalForm is not only a consumer upload form. It also supports operational document-mail workflows:
- Bulk mail campaigns from CSV recipients and shared PDFs or templates.
- Developer API and OpenAPI documentation for quote, order, payment, and status workflows.
- Remote MCP tools for agents that need to create reviewable mail drafts.
- MPP and x402 machine-payment paths for authorized autonomous runtimes.
- AI-facing documentation at
/ai,/agents,/developers,/llms.txt, and/skill.md.
Use hosted checkout when a human should review the PDF, addresses, options, and price before payment. Use direct machine payment only when the owner explicitly authorized autonomous mailing and spending limits.
What not to use it for
PostalForm prints from digital files. Do not use it when you need to place physical originals, checks, keys, ID cards, physical photos, merchandise, or notarized originals into the envelope. Do not use it as legal advice, process serving, guaranteed same-day delivery, or a substitute for checking the recipient's required mailing method.
Sources
Postage is included for standard mailing. Express, Certified Mail, Electronic Return Receipt, signature options, large packets, international routes, or provider-specific handling can change the final quote. You see the total before checkout.
Estimate a real order
Why PostalForm
USPS delivery
First Class or Express with optional Certified Mail.
Address validation
Reduce returned mail and delivery errors.
Fast checkout
Upload once and mail in minutes.
FAQs
- Is PostalForm a real online print and mail service?
- Yes. PostalForm prints your document on paper, prepares the envelope and postage, and mails it through the appropriate mailing provider or carrier route.
- What file types can I upload?
- PostalForm supports PDF plus DOCX, HTML, Markdown, RTF, image, and text uploads that can be converted into a printable PDF preview before checkout.
- Can I mail multi-page document packets?
- Yes. Upload one combined PDF and PostalForm prints the pages in order. Put the cover letter first, followed by forms, supporting documents, exhibits, or attachments.
- Do you handle envelopes and postage?
- Yes. PostalForm prepares the envelope and includes postage in the standard-mailing checkout total. Optional delivery and proof services appear when supported.
- Can I use Certified Mail through an online print and mail service?
- Yes, when the order qualifies. PostalForm offers Certified Mail with Electronic Return Receipt for qualifying U.S. First Class mail.
- Can Express require a signature on delivery?
- Yes. If the recipient or process requires it, choose Express and select signature required at checkout when the option is available.
- Can developers or AI agents use PostalForm?
- Yes. PostalForm exposes developer docs, OpenAPI, MCP, hosted checkout, MPP, and x402 flows so software and agents can create draft mail orders, preview documents, pay when authorized, and track fulfillment.
- Where can you mail letters?
- PostalForm supports specific destination countries and routes. The available services depend on destination, address validation, document size, and provider eligibility.
Ready to send it?
Upload a document or write a letter and PostalForm will handle the print-and-mail workflow after you review the PDF, addresses, options, and price.