Mail.gw
Mail.gw: A free disposable-mail service with a short-lived inbox and documented API. Ranked #19 of 33 in Temporary Email Services by our editors (7.2/10); pricing: Free plan; best for free API-based disposable mail.
At a glance
- Editor score7.2 / 10
- PricingFree plan
- Best forFree API-based disposable mail
- Free planYes
- Paid fromFree
- Inbox lifespanMinutes
- Facts checked21 Sep 2026
Where it wins
- Automatically generates addresses without registration
- Free API supports messages, attachments, and account events
- Instant delivery with 10-minute mailbox expiration
Where it doesn't
- Mailboxes and messages expire after 10 minutes
- No outbound email support
- Access is limited to web and API platforms
Our verdict on Mail.gw
Mail.gw is a temporary email service for receiving messages through automatically generated disposable addresses. It is suited to online account sign-ups, email confirmation testing, and other situations that call for a short-lived inbox without conventional registration. The service delivers incoming messages instantly and deletes temporary addresses and their messages after 10 minutes. Mailbox access uses a password, while the service does not provide outbound email.
Its free API is the main differentiator for developers and automated workflows. The documented endpoints support creating temporary email accounts, retrieving messages, and retrieving email attachments. Server-sent events provide notifications for account messages, and the API documentation states that API keys are not required. This makes Mail.gw a focused option for programmatic receipt and processing of short-lived email rather than a general-purpose mailbox service. The web interface provides an alternative when an API workflow is unnecessary.
The service is a strong fit when free access, automatic address generation, instant delivery, and a strict 10-minute lifespan match the task. It can also suit workflows that need attachment retrieval or event notifications without adding a paid tier. Choose an alternative if you need to send email, retain messages beyond 10 minutes, or work through platforms beyond the web and API. Mail.gw is narrowly designed around temporary incoming mail, with its value concentrated in its free API and short expiration window.
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Mail.gw pricing
Mail.gw fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Inbox lifespan | Minutes |
| Retention period | Not verified |
| Custom domains | Not verified |
| API access | Yes |
| Attachments | Yes |
| Inbox protection | Password |
| Deployment | Cloud |
| Platforms | Web |
| Support | Email, Community, Docs |
| Built for | Solo, Small business (editorial estimate) |
| Pricing | Free plan |
| Website | mail.gw |
| Facts checked | 21 Sep 2026 |
Alternatives to Mail.gw
- MailinatorA mature testing service for private inboxes, automation, APIs, and delivery workflows.9.4
- Temp Mail APIA developer-focused temporary email service with strong automation and API coverage.9.2
- TemporaryEmail.devA developer-focused temporary email service with retention, routing, and delivery analytics.9.0
See all Mail.gw alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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