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Mailform and PrintByPost both let you upload a document, pay online, and have it printed and mailed via USPS without leaving home. They're the two closest direct competitors in this niche. Here's an honest look at the differences so you can decide which one fits your situation.
A 3-page B&W contract mailed to a US address: PrintByPost works out to roughly $3.29 all-in (free Standard USPS). Mailform typically lands between $3 and $4 once you've picked a USPS tier and added shipping. The gap widens for longer documents — PrintByPost's flat additional-page rate scales predictably.
PrintByPost is the better fit for individuals and small businesses mailing one-off documents who want predictable, all-in pricing. The free Standard USPS shipping removes the most common surprise: thinking you're paying $2 and getting hit with $3 in shipping. Accepting images directly (not just PDFs) is also useful for letters, photos, and one-off correspondence.
Mailform is the better fit if you need fine-grained control over USPS service tiers, want to integrate via API, or already have an established workflow there. They've been in this space longer and have deeper integration options for developers and high-volume senders.
Comparison verified June 2026. Competitor pricing and features may have changed since publication — check their site for the latest before deciding. Visit Mailform →