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About

MailThis.to has a memorable API that doesn't need extensive documentation. You'll remember it when you need it, and you can Google the details. Build your first form in seconds, remember it forever. Spam Filtering, Form customization, and file uploads are all supported. Your first 250 emails are free, then just $5 per thousand emails. Create an alias to avoid exposing your email address to the world. Create a form using HTML, a form builder, or use Javascript to generate POST requests that land in your inbox. Each time your form is submitted, you'll get an email! You'll have to verify the first one, and each visitor will need to verify with reCAPTCHA to prevent spam. Use MailThis.to for up to 250 emails without signing up, completely free. Since 2014, MailThis.to has provided thousands of users with a simple form to mail API, with millions of emails sent. We're looking to handling your mail!

About

OpenMail gives AI agents a dedicated email address. Provision an inbox with one CLI command or API call, each agent gets its own address, not a shared inbox or forwarding alias. Inbound email arrives instantly via webhook or WebSocket, parsed and threaded, with no polling required. Replies land in context so agents can respond without any new interface on the human side. Attachments: PDFs, CSVs, images, spreadsheets, Word documents are automatically converted to LLM-ready text; the agent never touches raw MIME. The API is small by design: one call to provision, standard calls to send, webhooks or WebSocket to receive. Integrates with LangChain, n8n, Make, Vercel AI SDK, and OpenClaw. Custom domains supported. Runs in the EU, GDPR-covered, 99.9% uptime SLA, SOC 2 in progress.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Businesses and individuals looking for a secure email API to build forms using HTML and secure their emails

Audience

Developers, AI agent companies, software companies innovating with agentic technology

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

No images available

Pricing

$5 per thousand emails
Free Version
Free Trial

Pricing

9 EUR
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

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Reviews/Ratings

Overall 5.0 / 5
ease 4.0 / 5
features 5.0 / 5
design 5.0 / 5
support 5.0 / 5

Pros & Cons from Real Users

Pros

  • I was playing with OpenClaw quite a bit when I hit a roadblock, which is it can't sign up to services? Luckily, OpenMail was here to help, I own them one.

Cons

  • The onboarding was a bit tricky with so many integrations to choose from. But I got some help from Discord, fast responses too.

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

MailThis.to
Founded: 2014
mailthis.to/

Company Information

OpenMail
Founded: 2026
Lithuania
Openmail.sh

Alternatives

weForms

weForms

weDevs

Alternatives

VeriPurge

VeriPurge

Labnify

Categories

Categories

Electronic Data Capture Features

Audit Trail
CRF Tracking
Data Entry
Data Verification
Distributed Capture
Document Imaging
Document Indexing
Forms Management
Remote Capture
Study Management

Integrations

LangChain
Loader.io
Make
OpenClaw
Vercel
n8n

Integrations

LangChain
Loader.io
Make
OpenClaw
Vercel
n8n
Claim MailThis.to and update features and information
Claim MailThis.to and update features and information
Claim OpenMail and update features and information
Claim OpenMail and update features and information