PostTo — Developer Tools

What is PostTo?

PostTo is a form backend service hosted in the EU. It lets you point your HTML form at PostTo and receive submissions in your inbox — no backend code, no email server setup, no SPF/DKIM configuration. It also supports signed server-to-server API calls for custom integrations.

Problem it solves

Developers and agencies often waste time building form handling, spam filtering, and email delivery from scratch. PostTo eliminates that overhead: it provides spam filtering, rate limiting, and reliable email delivery (via Lettermint, EU infrastructure) out of the box.

Who is it for?

PostTo is ideal for freelancers, agencies, and developers who build static sites or client websites with forms (e.g., contact pages). It works with any framework or static site generator. It’s not for teams needing complex marketing automation or CRM features.

Real use cases

Use PostTo for contact forms on marketing sites, job application forms, or lead capture on landing pages. It’s particularly handy for sites hosted on static platforms where a backend isn’t available.

• Plain HTML form integration — No JavaScript or SDK required; just set the action attribute.
• Signed API (HMAC-SHA256) — For server-side POST requests with replay protection.
• GDPR-ready — EU hosting and email delivery via Lettermint, all data encrypted at rest.
• Spam filtering — Baseline filtering with honeypot + Turnstile + heuristics; AI spam classification available on paid plans.
• Rate limiting — Per-endpoint and per-IP limits to prevent abuse.
• Dashboard — Full submission history with searchable records.
• Custom field mapping — Map arbitrary field names to canonical roles (on paid plans).

PostTo pricing: from $0/mo.

For comparison: the median starting price in Developer Tools is $19/month, measured across 301 tools we track. See the full SaaS Pricing Index →

Free — $0/month

• 50 emails/month
• 1 endpoint
• 7-day submission history
• Full submission dashboard
• Baseline spam filtering
• Webhooks

Starter — $9/month (or $7/month billed annually)

• 1,000 emails/month (up to 50 overage emails at $0.45 max)
• 3 endpoints
• 30-day submission history
• Custom field mapping
• Custom spam blocklist
• AI spam ($5/mo add-on)

Pro — $29/month (or $24/month billed annually)

• 5,000 emails/month (up to 250 overage emails at $1.50 max)
• 25 endpoints
• 90-day submission history
• Custom sender name
• Autoresponders
• 3 webhooks per endpoint
• AI spam filtering included

Scale — $99/month (or $82/month billed annually)

• 25,000 emails/month (up to 1,250 overage emails at $5.00 max)
• Unlimited endpoints
• 365-day submission history
• All Pro features
• Unlimited webhooks

All plans include a free start — no credit card required. No trial period; start free and upgrade as you grow.

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