1SecMail vs MinuteMail

1SecMail provides temporary disposable email for sign-ups, with mailbox creation that does not require registration or personal information. Users can send and receive messages, create custom aliases, and receive attachments to download before they expire. Its guide says addresses and related communications are usually erased automatically after 24 hours. The service is available on web and Android, and a Chrome extension provides access to temporary email. Developers can use published API documentation covering domains, mailbox creation and management, message retrieval, and attachment downloads; however, the API-key feature is currently under development. Premium offerings list additional domains, inbox records, saved messages, attachment viewing, and support. The Premium page also advertises 100MB storage and no ads. A free plan is available; Standard costs $4.99 a month, and paid plans start at $4.99 a month. 1SecMail cautions that public temporary addresses are not suitable for sensitive or financial information.

MinuteMail is a developer testing platform for email and authentication flows, available on the web and through an API. It provides isolated test inboxes with lifetimes from 1 to 60 minutes; the default is 15 minutes when no duration is specified. Real-time SSE delivery and message lifecycle tracking help follow email flows, while a mock OAuth identity provider supports OAuth 2.0 authorization code flows with optional PKCE. Access options include a REST API, official Python SDK, and MCP server; setup guidance covers Claude Code, Claude Desktop, and Cursor. Accounts can use verified custom domains within plan limits, and API keys can be restricted by operation scope and allowed mailbox domains. MinuteMail says it uses HTTPS/TLS in transit, database encryption at rest, hashed API keys, and row-level security. Temporary mailboxes and messages are permanently deleted at expiry; archived mailboxes retain only the email address. The service advises using it for temporary, non-sensitive communications. A free plan has 50 API calls per day, two active mailboxes, and four archived mailboxes. Paid plans start at $86/yr.