Mailinator review

Mailinator is a testing inbox service for teams building and checking email and SMS workflows. Instead of routing test messages through employees’ personal accounts, teams can send them to Mailinator inboxes and read them in a web interface or pull them into test suites through the API. The product also supports email rules, such as clicking links or forwarding messages to platforms including Slack, and webhooks for automated checks.

There are two different use cases here. Public inboxes are temporary and open to anyone who knows the address, so they suit throwaway testing—not passwords, customer data or other sensitive content. Private inboxes use a subscription’s testing domain and are intended for controlled team workflows. Mailinator also lists SMS testing for OTP and 2FA flows, but says it is available by request at an additional charge that is not published. That makes it worth checking the SMS quote before treating Mailinator as an all-in-one email-and-SMS test setup.

Mailinator’s clearest fit is repeatable email QA: create inboxes for test cases, inspect incoming messages as they arrive, and connect checks to an API or webhook instead of asking someone to watch a mailbox. Email rules can click links or forward messages to Slack, which can help cover confirmation and notification flows. The published feature information also lists SMS testing for OTP and 2FA, though access and price need confirmation.

The free Public plan includes unlimited public inboxes and requires no sign-up, according to the plan details. For private testing, Verified Pro is listed at $0 and includes one user, unlimited private inboxes, one private domain, 10MB permanent storage and 1,000 emails per month. That gives a solo tester a way to try private-domain workflows before paying for a team plan.

For teams, Business is listed at $99 monthly or $79 per month billed annually. It includes five seats, one private domain, 100,000 emails per month and a limit of 20 emails per second. Business Plus raises that to 10 seats, three domains, 300,000 emails per month and 100 emails per second, at $199 monthly or $159 billed annually. Those caps make the price-to-volume comparison fairly concrete.

The main switching cost is that “free” does not mean a free team setup. Verified Pro is limited to one user, one private domain, 10MB of permanent storage and 1,000 emails per month. Business starts at $99 monthly, or $79 per month billed annually, and its five seats and one domain may be restrictive if several teams need separate environments. Business Plus costs $199 monthly or $159 annually per month for 10 seats and three domains. Enterprise is listed at $699 per month, with custom seats and storage, five or more domains and 3MM+ emails per month; separate annual pricing is not published.

SMS is another pricing gap: testing is available by request, but the extra charge is not published. The pricing information lists a two-week free trial, but does not specify its conditions here. Confirm those terms and any SMS quote before budgeting.

Public inboxes are unsuitable for confidential test data because anyone can access them. Reddit users also report that some sites block Mailinator addresses. That matters if your QA needs to reproduce sign-up flows on services that reject disposable domains; private domains may help with controlled testing, but the published information does not promise they will pass every site’s filters.

Mailinator has two $0 options: Public - Free for temporary public inboxes, and Verified Pro for one user, unlimited private inboxes, one private domain, 10MB of permanent storage and 1,000 emails per month. The pricing page lists Business at $99 monthly or $79 per month billed annually. That gets five seats, one private domain, 50MB of permanent storage and 100,000 emails per month, with a limit of 20 emails per second.

Business Plus costs $199 monthly or $159 per month billed annually. It doubles the seats to 10, includes three private domains and 100MB of permanent storage, and raises the cap to 300,000 emails per month and 100 per second. Enterprise is listed at $699 per month, with custom limits; a separate annual price is not published. That is a steep jump from Business if you need more seats or volume.

SMS testing is available by request at an unpublished extra charge. The pricing material also lists a two-week free trial but does not specify which plan it applies to. Confirm SMS costs and trial terms before budgeting.

Switching in means updating test workflows to send messages to Mailinator inboxes, then reading them through its web interface or API. Teams may also need to revise checks that click email links, forward messages to Slack, or test SMS flows. How much work that takes depends on your existing test setup; the published material does not document migration tooling.

Before moving, confirm how you can export or retain messages and test data. The plan details list permanent storage caps of 10MB to 100MB on paid tiers, while the Public plan uses temporary storage. Export options are not published on the vendor's site, so do not assume existing test history can move cleanly.

Leaving may mean changing inbox addresses and replacing API checks or message rules. We were not given Reddit posts or comments to support a claim about why users leave, so we can’t attribute common churn reasons to Reddit. Check seat limits, email volume and the unpublished SMS fee against your needs before switching.