Mail.cx
- Android app
- Not listed
- Free plan
- Yes
- Paid plans from
- $0.82/mo
- Runs on
- api, Web
Summary
Mail.cx provides short-lived inboxes for receiving email in developer workflows. Developers, QA teams, and product teams can use it to check account verification messages, transactional email, notification pipelines, and application integrations. A web inbox is available without signup; users can choose a username or have one generated randomly. New messages can appear in the browser through server-sent events. Its REST API supports long-polling, access to parsed or raw email, attachment downloads, and event delivery. API traffic is limited to 10 requests per second per token. Long-polling allows one concurrent wait per token and 10 per address. Mail is automatically deleted after one hour on Free and 72 hours on Pro. The Free plan is 0.00 USD per free, and Pro is 9.90 USD per year; the pricing note also lists paid plans from $4/mo. Mail.cx only receives email, not sends it. It says connections use TLS and describes hashed password and API-token storage. Its terms caution against relying on the service for critical, sensitive, or business-essential communications.
Who it is for
Mail.cx suits developers, QA teams, and product teams checking email flows and application integrations. It is intended for receiving test messages, not sending email or handling critical communications.
What is good
- Web inbox available without signup
- REST API supports parsed and raw email
- Attachments can be downloaded through the API
- Custom domains can be added using DNS verification
- Real-time events can push mail to the browser
What to know first
- The service does not send email
- Free mail is retained for one hour
- API use is limited to 10 requests per second per token
- Terms warn against relying on it for critical communications
Verdict
Mail.cx offers a no-signup web inbox and API tools for short-lived email checks. Its one-hour Free retention and receive-only design make it unsuitable for workflows needing message recovery or email sending.
Mail.cx plans and pricing
All plansCompared on temporary email services
Facts
- Product
- Mail.cx provides short-lived inboxes, email receiving, API access, and real-time mailbox events for developer workflows.mail.cx · 29 Sept 2026
- Use cases
- It is designed to help developers, QA teams, and product teams test account verification, transactional emails, notification pipelines, and application integrations.mail.cx · 29 Sept 2026
- Receive only
- The service receives email and does not provide email sending functionality.mail.cx · 29 Sept 2026
- Inbox creation
- Users can pick a username or generate one randomly, and the web inbox is available without signup.mail.cx · 29 Sept 2026
- Real-time delivery
- Server-sent events push new mail to the browser when it arrives.mail.cx · 29 Sept 2026
- API
- The REST API supports long-polling inboxes, retrieving parsed or raw email, downloading attachments, and server-sent event delivery.mail.cx · 29 Sept 2026
- API limits
- The API allows 10 requests per second per token; long-polling is limited to one concurrent wait per token and 10 per address.mail.cx · 29 Sept 2026
- Retention
- Mail is kept for 1 hour on Free and 72 hours on Pro, then automatically deleted.mail.cx · 29 Sept 2026
- Security
- Mail.cx says connections use TLS, passwords are hashed with bcrypt, and API tokens are stored as SHA-256 hashes.mail.cx · 29 Sept 2026
- Privacy
- The privacy policy says inbox content, account email, and API tokens are not sold, rented, or shared with advertisers or other third parties.mail.cx · 29 Sept 2026
- Support
- Support inquiries go to [email protected], and the contact page says typical response time is within two business days.mail.cx · 29 Sept 2026
- Service limitation
- The terms say the service does not guarantee message retention or recovery and should not be relied on for critical, sensitive, or business-essential communications.mail.cx · 29 Sept 2026
- Operator
- Mail.cx is operated by SICHUAN HAONI E-COMMERCE CO., LTD.mail.cx · 29 Sept 2026
Best Mail.cx alternatives
See all 12
Where it ranks on Everything Xiaomi
Is Mail.cx yours?
Claim it for free: prove the domain, then correct facts, plans and screenshots. An editor reviews every change.
Sources
- mail.cx/about· checked 29 Sept 2026
- mail.cx/terms· checked 29 Sept 2026
- mail.cx· checked 29 Sept 2026
- mail.cx/api-docs· checked 29 Sept 2026
- mail.cx/privacy· checked 29 Sept 2026
- mail.cx/contact· checked 29 Sept 2026