nomoat / Sunnybox / Alternatives
Alternatives to Sunnybox
Sunnybox: Connect email accounts and get messages sent to your webhooks, with an API for replies and content analysis. Here are 17 other products that do a similar job. Of these, 16 have a free plan.
- 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
- 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
- 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
- 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
- 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
- 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
- Pingram
One API for sending and receiving email, SMS and voice calls, with US A2P 10DLC SMS registration handled for you.
Free plan · Transactional email · Developers
- Revdoku
Gives AI agents email inboxes of their own to get mail, reply and keep files, with spam filtering, via API, MCP or CLI.
Free plan · Developer tools · 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
- Webhooker
Receives webhooks from providers like Stripe, then verifies, stores and forwards them to your services with retries.
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
- Mailwip
Forwards mail sent to any address on your own domain to your inbox, with an API for apps that receive email.
Since 2021
Subscription · Transactional email
- 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
- 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
- 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