1SecMail

1SecMail is a disposable email service for people who need an address for a short-lived, low-stakes sign-up. Its alias and attachment options add useful flexibility, but an unprotected inbox and uncertain retention make it a poor fit for private correspondence.

Overview

You can create a mailbox without registering or sharing personal information, and 1SecMail says it gathers no personal information and automatically deletes transient email. The service supports sending and receiving messages, but its public temporary addresses should not be used for sensitive or financial information. Inbox protection is none, so privacy-conscious users should keep use to routine sign-ups rather than accounts they need to secure or recover.

Retention needs caution: the inbox lifespan is given as minutes, while the one-time-email guide says addresses and related communications are usually erased after 24 hours. Plan to retrieve anything you need promptly; attachments can be downloaded before expiry, but the mailbox is not a dependable place to keep messages.

Key features

• Custom aliases: Choose a unique alias instead of the default address, useful when you want more control over the address used for a sign-up.
• Message sending and receiving: The service supports both, rather than limiting the mailbox to incoming mail.
• Attachments: Receive files and download them before the email expires. This helps with one-off exchanges, not long-term file access.
• Developer API: Documentation covers domains, creating, updating and deleting emails, retrieving messages, and downloading attachments. The API is intended for developers and companies, but API-key access is under development; the published capabilities therefore do not amount to an available API-key integration.
• Premium domains and storage: Premium users can choose 1secmail.cc, 1secmail.website, and 1secmail.live; the Premium page advertises 100MB of extended storage, no ads, and premium support.

Pricing

1SecMail is freemium. The Free Plan costs nothing and includes 3 own domains, 3 inbox records, 3 saved messages, premium support, attachment viewing, and premium domains. It is a reasonable starting point for occasional use, but the small record and saved-message allowances limit it for anyone juggling multiple inboxes or keeping more messages.

Standard costs $4.99 a month and raises the allowances to 5 own domains, 30 inbox records, and 30 saved messages; Premium costs $9.99 a month for 10 own domains, 50 inbox records, and 50 saved messages. Both include premium support, attachment viewing, and premium domains. These monthly tiers suit regular users who need more capacity, with Premium providing room for more inboxes and saved mail.

Gold costs $35.99 a year and includes 20 own domains, 500 inbox records, and 500 saved messages, alongside premium support, attachment viewing, and premium domains. Diamond costs $45.98 a year and offers unlimited own domains, inbox records, and saved messages, with the same other inclusions. Their annual billing makes them better suited to sustained use than a short-term need; Diamond is the more flexible option for users who would outgrow Gold's stated caps.

Pro API Key costs $10 a month and advertises unlimited requests subject to a fair usage policy, faster response times, private API-key access, and developer-friendly use. Because API-key access is still under development, developers should not treat the plan's advertised access as a currently usable integration. The listed plans specify no trial length or seat allowance.

Platforms

1SecMail is offered on the web and Android, with a Chrome Web Store extension for instant access to temporary email. An API platform is also indicated, but API-key access remains under development, which limits its present usefulness to teams seeking a ready integration.

Who it's for

Choose 1SecMail for disposable addresses used in routine sign-ups, especially if custom aliases or temporary attachment downloads matter. It is not the right choice for sensitive or financial accounts, or for users who need protected inboxes or reliable message retention.

Pros and cons

• Pro: No-registration mailbox creation avoids sharing personal information just to get a temporary address.
• Pro: Custom aliases, outbound mail, and attachment downloads give the temporary inbox more flexibility than receiving messages alone.
• Con: Inbox protection is none, and the service warns against using public addresses for sensitive or financial information.
• Con: The lifespan is described as minutes, despite a separate guide's usual 24-hour deletion window, so users should not rely on keeping messages.
• Con: API-key access is not yet available for developers who need to integrate disposable mail into an application.

Alternatives

Temporary Email Services is the broader category to browse if 1SecMail's short-lived, unprotected inbox does not fit your needs.

• SecureTempMail is worth considering if retention matters more: its Premium plan offers up to 30-day retention, private domains, attachment downloads, inbox history and search, and no ads for $39 a year.
• Temp-Mail.org suits readers who want a free receive-only option, with messages stored up to 1–2 hours; its free plan gives up the sending supported by 1SecMail.
• 10 Minute Mail fits a very brief task: its free address expires after 10 minutes, with a timer reset for another 10 minutes.
• EmailOnDeck is another freemium temporary-email option.
• EmptyInbox is an alternative if you want a service with REST API and MCP access on its free plan.
• TempMailo is a free alternative that offers saving and restoring an inbox and usage-limited Reply Relay.
• Emailnator may suit bulk address creation: its free tier supports up to 100 addresses at once, with public inboxes and deletion after 24 hours.
• EvilMail is another free option for generating temporary email without registration, with inbox lifetimes from 10 minutes to 24 hours.

Verdict

1SecMail is a sensible pick for low-stakes sign-ups when you want an address without registration, plus aliases and the ability to retrieve attachments. Its main drawbacks are the lack of inbox protection and uncertain short retention; choose another service for sensitive accounts, dependable history, or a working API-key integration.