nomoat / OpenInbox / Alternatives
Alternatives to OpenInbox
OpenInbox: Throwaway email addresses for sign-ups and verification codes, with an API and webhooks for testing email flows. Here are 24 other products that do a similar job. Of these, 24 have a free plan.
- App AI Gateway
A proxy for iOS developers that holds AI provider keys, checks each request comes from the real app and caps spend per user.
Free plan · Security and passwords · Developers
- ConfigBerry
Copies Cloudflare firewall rules from one zone to many others and exports zone settings, for teams running lots of domains.
Since 2025
Free · Security and passwords · Agencies
- Tofu
Puts an app you built with an AI coding agent online at its own link, with a database, sign-in, custom domain and user emails.
Since 2026
Free plan · Developer tools · Individuals and families
- Runtipi
Tool for running a home server that installs and updates hundreds of self-hosted apps from a dashboard.
Free · Developer tools · Individuals and families
- Mailinator
Gives QA teams and developers test inboxes and phone numbers to check signup, 2FA and password reset messages automatically.
Free plan · Developer tools · Developers
- EventSend
Send app events with one HTTP call, then search them and get them delivered to Slack, Discord, Telegram or webhooks.
Since 2026
Free plan · Developer tools · Developers
- Hookman
Gives you one fixed webhook URL that forwards Stripe and Paddle events to whichever branch deployment you are testing.
Since 2026
Free plan · Developer tools · Developers
- AnyHook
Sits in front of your server to receive webhooks from Stripe, Shopify and others, logging each one so missed events can be resent.
Free plan · Developer tools · Developers
- Batsign
A free personal URL that emails you when a script, cron job or build calls it, for developers who want simple alerts.
Free · Uptime and monitoring · Developers
- Codehooks
Hosted backend that takes in webhooks from Stripe, Shopify and others, stores them and runs your code with queues, cron and retries.
Since 2024
Free plan · Developer tools · Developers
- EdgarKit
A JSON API and webhooks that deliver new SEC filings and insider trades to fintech apps and quants.
Since 2026
Free plan · Developer tools · Developers
- Hook0
Sends webhooks from your app to customers with retries, signatures and logs, hosted in the EU or run on your own servers.
Free plan · Developer tools · Developers
- ImgDuck
Image hosting with an upload API, CDN delivery and custom domains for developers, note takers and online sellers.
Free plan · Developer tools · Creators and writers
- Light Cloud
Hosting that deploys a frontend, backend and Postgres database from a repo, a folder or an AI coding assistant.
Since 2026
Free plan · Developer tools · Developers
- Lumbox
Gives each AI agent a real email address, and soon a phone number, so it can read mail, reply and use login codes.
Since 2026
Free plan · Developer tools · Developers
- Pidgeon
Gives AI agents their own email addresses and inboxes through an API, hosted in the EU, for developers building agents.
Since 2026
Free plan · Transactional email · Developers
- Pocket Alert
Sends messages from your scripts, servers or webhooks straight to the Pocket Alert app on your iPhone or Android phone.
Since 2024
Free plan · Uptime and monitoring · Developers
- Signbee
An API and MCP server that lets AI agents send contracts and collect two-party signatures by email.
Since 2026
Free plan · Documents and e-signature · Developers
- Static Forms
Gives an HTML contact form an endpoint that filters spam and emails submissions, for static site owners and developers.
Free plan · Forms and surveys · Developers
- Webhooker
Receives webhooks from providers like Stripe, then verifies, stores and forwards them to your services with retries.
Free plan · Developer tools · Developers
- wsgrok
Opens a public HTTPS address to a server on your own machine, so developers can test webhooks and bots.
Since 2025
Free plan · Developer tools · Developers
- ZeroDrop
Throwaway test inboxes that pull out one-time codes and magic links, so developers can test login emails in CI.
Since 2026
Free plan · Developer tools · Developers
- CertPost
Reads the SSL certificate each of your hosts serves and emails warnings before it expires or breaks, for teams and agencies.
Free plan · Uptime and monitoring · Agencies
- Chatcode
Lets developers reach Claude Code or Codex sessions running on their own server from a browser tab or Telegram.
Since 2026
Free plan · Developer tools · Developers