EmptyInbox vs MailCatch
EmptyInbox
emptyinbox.meMailCatch
mailcatch.comSide by side
| Figure | EmptyInbox | MailCatch |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| Linux | Yes | — |
| API | Yes | — |
| Plans published | 5 | 2 |
| Spec score · Temporary email services | 8.4 (#12) | 7.4 (#30) |
| Spec score · Temporary Email Services | 8.4 (#9) | 7.5 (#22) |
| Purpose | EmptyInbox provides disposable email inboxes for AI agents and developers through a REST API and MCP server. | MailCatch provides temporary disposable email inboxes for receiving messages without giving a personal email address. |
Plans
EmptyInbox
- FreeFree
- Top-up — Micro$1, paid once
- Top-up — Starter$5, paid once
- Top-up — Standard$15, paid once
- Top-up — Bulk$40, paid once
In their own words
EmptyInbox
EmptyInbox provides disposable email inboxes for AI agents and developers through a REST API, an MCP server and a web inbox. A new address can be created for each task or agent run. Messages can be polled, or received through the MCP wait_for_message flow, which can extract verification codes. The web inbox uses passkey sign-in and displays extracted codes and links alongside messages. Each inbox creation uses one credit; receiving, listing and reading messages are free. Messages are deleted automatically after seven days. EmptyInbox receives email only and has no sending endpoint or SMTP credentials. Listed integrations include MCP-compatible agents, OpenAI GPT Actions, LangChain, CrewAI and OpenAPI-compatible frameworks; workflow guides cover Playwright, Cypress, n8n and LangChain. The free plan includes five inbox credits and REST API and MCP access. One-time top-ups start at 1.00 USD for 10 credits, payable by Bitcoin or USDT. The project is open source under the MIT license, and questions go through GitHub issues.