EmptyInbox vs TempMailo

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.

TempMailo provides temporary email addresses for receiving sign-up messages, activation links, and verification codes without exposing a personal email address. Basic use does not require an account or personal details. Users can protect an inbox with a password, then restore it later using the email address and password. Reply Relay allows replies to incoming messages, but keeps the recipient fixed to the original sender. Each temporary email can send up to three replies a day, with a 15-minute cooldown, CAPTCHA, a 2,000-character message limit, and up to two supported attachments. Supported attachments can be downloaded when available. TempMailo is available on web, Android, iOS, and as a browser extension; its Android app and extensions are distributed through the listed app stores. The service costs nothing. Inbox data may be deleted after inactivity or for maintenance, and old messages are not guaranteed to remain. TempMailo is intended for everyday, low-risk tasks, not sensitive or permanent accounts.