EmailOnDeck vs EmptyInbox

EmailOnDeck provides temporary email addresses for sign-ups, confirmations, and privacy protection. A free address typically remains available for hours, often most of the day, but closing the browser or clearing cookies can end access sooner. Free users can send messages only to other EmailOnDeck addresses; Pro users can send anonymous email to anyone. Messages support viewing or downloading attachments. Chrome and Firefox extensions create disposable addresses, and free iPhone and Android apps are available. The browser-based Spy Pixel Scanner says pasted email source stays on the device rather than being uploaded or stored. Pro API access covers address creation and deletion, domain lists, message counts, headers, and raw messages, with a documented limit of 25,000 calls per day; sending through the API is unavailable. API use requires an active Pro account and a 40-character private key. Plans include an ad-supported free option and Pro payments listed at 0.00 BTC or 0.03 ETH, each extending access for 30 days.

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.