Aviationstack ◆
Aviationstack is a scalable REST API for real-time flight tracking, historical flight data, airport info, and global aviation data.
from $49.99/mo
About PostTo
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.
Key features
- 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).
SaaSpartout Score
7.6
/10
Editorial score from our review methodology — not user ratings.
PostTo Pricing
PostTo pricing: from $0/mo.
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.
Frequently asked questions
Is PostTo free?
Yes, PostTo has a free plan that includes 50 emails per month, 1 endpoint, and 7-day submission history. No credit card is required to start.
How much does PostTo cost?
PostTo pricing starts free, with paid plans at $9/month (Starter), $29/month (Pro), and $99/month (Scale). Annual billing offers discounts.
Who is PostTo best for?
PostTo is best for developers, freelancers, and agencies that need a simple, GDPR-compliant form backend for HTML forms on static or client websites.
What are the top alternatives to PostTo?
Top alternatives include Formspree, Netlify Forms, Basin, Formspark, and Web3Forms. PostTo differentiates with EU hosting and a free plan.
Does PostTo require JavaScript?
No, PostTo works with plain HTML forms — just set the action attribute. No JavaScript is needed, though a signed API is available for server-side use.
What is the main limitation of PostTo?
The free plan has a low limit of 50 emails per month and only 1 endpoint, which may not suit high-traffic contact forms. Paid plans are required for more volume and advanced features like autoresponders.
