Build the mailing once. Preview every recipient before you pay.

Drop in the recipient CSV, choose whether you are writing, styling, or reusing a finished PDF, and generate one reviewable packet per valid row.

Drop a CSV and see what PostalForm can merge.

Choose text, custom HTML, or one shared PDF.

Preview all valid recipients before checkout.

1. Recipient List

Upload the mailing CSV

Required columns: line1, city, state, zip. Optional: line2 and recipient_name. Any additional columns become merge fields.

Start Here

Drop in the recipient CSV

Drag and drop or click anywhere in this area to browse. PostalForm will validate the rows and surface merge fields before preview.

Click to browseor drag and drop

line1citystatezipChecks columns, counts valid rows, and finds merge tags.

Rows in file

Valid recipients

Needs attention

Merge fields detected

Upload a CSV to reveal optional merge fields.

2. Mail Piece

Pick the production path first, then refine the content. PostalForm will render one packet per valid row before you check out.

Selected Mode

Write a letter

Fastest path

Letter template

Live Merge Preview

Upload a valid CSV to preview how merge fields resolve against the first recipient row.

Merge Tag Syntax

Use double braces like {{first_name}} or {{account_number}}. CSV headers are normalized to snake_case.

3. Sender Details

The sender name and return address print on every piece. The contact email is only for receipts and campaign updates.

Contact emailSender name

Campaign name

Return address printed on each piece

What This Controls

Sender name and return address are applied to the printed mailpiece.

Campaign name helps you recognize the preview and checkout later.

Contact email receives the receipt and campaign progress updates.