1SecMail vs TempMaily

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.

TempMaily provides disposable email inboxes for receiving verification codes and signup mail through web and API access. Its free inbox is created without signup, a password, or personal details, and messages appear in the browser as they arrive. Mailboxes are receive-only, so they cannot send email, although incoming messages can include attachments. The free plan permits one shared-domain address at a time; the inbox and its messages are permanently deleted 24 hours after creation, with transient storage and ads. Premium supports up to 10 addresses, custom and dedicated domains, long-term or permanent addresses, and 2GB of email storage. It also adds a REST API and MCP server for programmatic inbox creation and message reading. The MCP server works with Claude Desktop, Claude Code, Cursor, and MCP-capable agent frameworks. Premium costs $7.50 a year when billed annually ($90/year), or $9.90 a month. HTTPS, HTML sanitization, sandboxed rendering, disabled scripts, and blocked remote images are listed protections.