Syntax Specification

The email body structure

Three sections separated by "---". With that format our system processes your letter automatically, right away.

Section 1

1. Sender Address (Return address printed on top-left of envelope)

Your name and return postal address. This is printed on the top-left of the envelope so undeliverable mail can return to you.

---Triple-dash delimiter (three hyphens on a line by itself)
Section 2

2. Recipient Address (or address.txt for bulk mailings)

The destination postal address: Name, Street address, City, State, and ZIP code.

---Triple-dash delimiter
Section 3

3. Message Content (or letter.pdf for attached document)

The full body of your letter. We print this directly onto executive white 24lb bond paper.

email-body-to-send@emailtomail.us.txt
Jane Doe
123 Main St, Suite 400
Austin, TX 78701
---
John Smith
742 Evergreen Terrace
Springfield, OR 97477
---
Dear John,

Please accept this formal notification regarding your recent request.
All documents have been verified and recorded accordingly.

Best regards,
Jane Doe
✓ Single recipient • Plain text printed directlySend to: send@emailtomail.us
Standard format (Inline text)

Ideal for one-off letters, formal notices, thank-you cards, or dispute letters.

Multi-recipient & File Handling

How bulk mailing and attachments work

Scale your postal mailings effortlessly without dealing with complex mail-merge software.

Bulk Recipients (address.txt)

File: address.txt / address.csv

When you have multiple recipients, create a simple text file named address.txt. List each recipient on a new line or separated by an empty line. In the email body, simply put "address.txt" in the recipient slot. Our system loops through every address and prints an individualized letter.

Sample address.txt structureValid
# Bulk Addresses for emailtomail.us
# Format: Name, Street Address, City, State ZIP
Acme Corp, 742 Evergreen Terrace, Springfield, OR 97477
Dr. Jane Doe, 450 Serra Mall Bldg 20, Stanford, CA 94305
Marcus Sterling, 1000 5th Avenue Suite 3B, New York, NY 10028

PDF Documents (letter.pdf)

File: latter.pdf / letter.pdf

When your letter requires company letterheads, logos, signatures, or specific page layout, export it as a PDF and attach it to your email. In the email content section, write "letter.pdf" (or the exact attachment filename). We print the PDF exactly as designed, in black & white or color depending on the service you choose.

·Color or black & white: You choose on the payment link. Color logos and graphics print at 600 DPI.
·Standard US Letter (8.5 × 11 in): Automatic scaling to fit the tri-fold of a standard USPS #10 envelope.
·Multi-page support: Up to 6 pages per letter. Double-sided (duplex) or single-sided.
Supported attachments: .pdf for letters and invoices; .txt or .csv for address rosters. Maximum file size: 25MB per email.