This page's audience our own tag's counts — open to see them

Period

–Visits

–Page views

–Clicks to vendors

–Time on page

–Reading now

Clicks to vendors, by tool

Top countries

Devices

– · visits, page views and clicks counted by our own tag, which counts more than our checked analytics; every figure rounded down · how we count

Mail.cx

Freemium#16 of 33 in Temporary Email Services

Mail.cx: A practical receive-only inbox service with APIs, SSE delivery, and custom-domain support. Ranked #16 of 33 in Temporary Email Services by our editors (7.5/10); pricing: Free plan; best for users needing custom domains and real-time APIs.

7.5/10Editor score

Visit Mail.cx

Mail.cx7.5 Visit Mail.cx

At a glance

Editor score
7.5 / 10
Pricing
Free plan
Best for
Users needing custom domains and real-time APIs
Free plan
Yes
Paid from
$4/mo
Inbox lifespan
Hours
Facts checked
21 Sep 2026

Where it wins
- Disposable inboxes work without signup
- REST API includes long-polling, SSE, and attachment retrieval
- Pro supports custom domains and seven-day retention
Where it doesn't
- Receive-only workflows cannot send email
- Free inboxes retain messages for one hour
- No inbox protection is provided

Our verdict on Mail.cx

Mail.cx is a web and API service for disposable inboxes, email testing, and receive-only email workflows. It suits individuals, developers, QA teams, product teams, and AI-agent integrations that need temporary addresses without signup. Messages arrive in real time through the browser, while inboxes and messages expire automatically. Custom local-part selection adds control over the address created for each workflow.

The Free plan provides a web inbox without signup, one-hour mail retention, real-time delivery, and REST API access. The Pro plan costs $4 per month and adds custom-domain support, seven-day retention for custom-domain email, real-time delivery, and REST API access. For automation, the API offers long-polling and SSE endpoints, and it can retrieve attachments. That combination makes Mail.cx a focused option for teams that need programmatic access to incoming messages rather than a conventional mailbox.

The main boundary is its receive-only design: teams needing outbound email workflows should choose another service. Free retention is also short, so longer-lived custom-domain workflows fit the Pro tier more closely. Mail.cx is a good choice when disposable inbox creation, browser-based SSE delivery, API access, and custom-domain receiving are the priorities. It is less suitable for users who need inbox protection, persistent general-purpose mailboxes, or two-way email communication.

Your product? Our editors can test Mail.cx in depth and publish a review, labelled as paid · from $149/mo →

Mail.cx pricing

Plans Free planFreemium A usable free plan; paid tiers unlock the limits above. Prices checked 21 Sep 2026.

See plans on mail.cx

All 2 Mail.cx plans and prices →

Mail.cx fact sheet

Free plan	Yes
Paid from	$4/mo
Inbox lifespan	Hours
Retention period	1 days
Custom domains	Yes
API access	Yes
Attachments	Yes
Inbox protection	None
Money-back guarantee	14 days
Deployment	Cloud, Browser extension
Platforms	Web
Compliance & security	GDPR
Support	Email, Docs
Built for	Solo, Small business, Mid-market (editorial estimate)
Pricing	Free plan (source)
Website	mail.cx
Facts checked	21 Sep 2026

Alternatives to Mail.cx

See all Mail.cx alternatives →

Used Mail.cx? Be the first to review it

The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used Mail.cx for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.

Write a reviewTwo minutes · verified accounts only · read by an editor before it appears

Reviews come only from verified accounts. Sign in or create an account first — your e-mail is never shown.

Title

Your review

0 characters · at least 80, up to 3,000

Pros (optional · one per line)

Cons (optional · one per line)

Your name (shown with your review)

Role (optional)

Company (optional)

How long have you used it?

I've used Mail.cx myself and this is my honest opinion — nobody paid or asked me to write it.

Posted from your verified account. Reviews appear after an editor reads them, usually within two working days.

Featured on iTechGuides

Mail.cx is listed in our Temporary Email Services directory. Add the badge to your site — it links back to this page.

<a href="https://www.itechguides.com/products/mail-cx/"><img src="https://www.itechguides.com/best/badge/mail-cx.svg" alt="Featured on iTechGuides" width="230" height="46"></a>

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Last updated 7 Oct 2026 · How we research and update