Mailinator

Free plan AndroidAPIExtensionWeb

What Mailinator is

Mailinator provides temporary inboxes and tools for testing email and SMS workflows. Developers, QA teams, and businesses can use it to check delivery for OTP, MFA, onboarding, password recovery, and other email processes. Subscriptions include private testing domains, where messages can be received at an address without creating an inbox first. Its REST API supports inbox, message, and SMS retrieval, message injection, and CI/CD pipeline integrations. Inbound webhooks can accept HTTP POST messages from sources such as alert systems, Zapier, or Twilio, then apply configured rules. SMS can be routed to an inbox or API for automated OTP and 2FA checks. Public inbox messages are visible to anyone and typically auto-delete after several hours. Mailinator only receives messages; it cannot send email or fill out forms. The public plan is free, and a two-week Business trial is listed. Business costs $79 a month billed yearly; Business Plus costs $159 a month billed yearly. Enterprise is priced on request with custom pricing. Mailinator was founded in 2003 and is based in Ann Arbor, Michigan.

Who it suits

Mailinator suits development and QA teams that need to exercise email or SMS workflows, including automated checks through an API. Public inboxes are not suitable for messages that need privacy; private domains are included with subscriptions.

What it does well

Free public inbox plan
REST API supports retrieval and message injection
SMS can be routed to inboxes or API
Two-week Business trial

What to know first

Public inbox messages are readable by anyone
Mailinator cannot send email or fill out forms
Business costs $79 a month billed yearly

Limits

The free Public plan has temporary storage, and anyone can read its inbox messages; messages typically auto-delete after several hours. Verified Pro is listed at $0.00 per free, billed with Verification, and includes one private domain, 10MB permanent storage, up to 10 emails per second, 2K emails per month and 60 per day annually, and one user.

Plans

Plan	Billed and limits	Price
Public - Free	per month · unlimited public inboxes · temporary storage · no sign-up · no attachments in public inboxes	Free
Verified Pro	with verification · unlimited private inboxes · 1 private domain · 10MB permanent storage · up to 10 emails/sec · 1K emails/month · 1 user	Free
Business Plus (annual)	billed yearly · unlimited private inboxes · 3 private domains · 100MB storage · up to 100 emails/sec · 300K emails/month · 10 team seats · SSO	$159 a month
Business Plus	monthly · unlimited private inboxes · 3 private domains · 100MB storage · up to 100 emails/sec · 300K emails/month · 10 team seats · SSO	$199 a month
Enterprise	and up; custom pricing · unlimited private inboxes · 5+ private domains · custom storage · up to 500 emails/sec · 3MM+ emails/month · custom seats and limits · SSO	$699 a month
Enterprise (annual)	and up; custom pricing · unlimited private inboxes · 5+ private domains · custom storage · up to 500 emails/sec · 3MM+ emails/month · custom seats and limits · SSO	$699 a month
Business (annual)	billed yearly · unlimited private inboxes · 1 private domain · 50MB storage · up to 20 emails/sec · 100K emails/month · 5 team seats · SSO	$79 a month
Business	monthly · unlimited private inboxes · 1 private domain · 50MB storage · up to 20 emails/sec · 100K emails/month · 5 team seats · SSO	$99 a month

As mailinator.com lists them, read 14 Oct 2026. The maker's own page has the final word.

Getting started

Open the Mailinator website.
Use the free Public plan for public inboxes without signing up.
Choose a subscription for private testing domains and use the two-week Business trial if appropriate.
Use the REST API to retrieve or inject messages, or configure inbound webhooks for HTTP POST messages.
Route SMS to an inbox or API for OTP and 2FA testing.

Verdict

Mailinator offers public temporary inboxes and subscription plans with private testing domains and workflow tools. Consider its receive-only limit and the lack of privacy in public inboxes before using it for a workflow.

Questions

Is Mailinator free?

Yes. The Public plan is free and offers unlimited public inboxes, temporary storage, and no sign-up. Verified Pro is also listed at $0.00 per free, billed with Verification.

How much does Business cost?

Business costs $79.00 per month, billed yearly. Business Plus costs $159.00 per month, billed yearly.

Is there a free trial?

Yes. The pricing page offers a two-week free Business plan trial.

Which platforms does Mailinator support?

Mailinator lists web and API platforms.

Can Mailinator send email or keep public inboxes private?

No. Mailinator is receive-only, and public inbox messages can be read by anyone.

Can teams test SMS workflows?

Yes. SMS can be routed to an inbox or the API for automated OTP and 2FA testing. The listed SMS numbers cost $500 per number per year or $50 per month, including 500 messages monthly.

Facts from Mailinator's own pages

Android app listing: Google Play lists a third-party app named Mailinator: Verification Email with temporary inboxes, OTP receipt and auto-refresh; the listing shows 100+ downloads and no star rating. · play.google.com, 14 Oct 2026
API authentication: API requests authenticate with a team token supplied in an Authorization header or token query parameter. · mailinator.com, 14 Oct 2026
API capabilities: The REST API lists, retrieves, parses and deletes messages, reads attachments and SMTP logs, handles domains and rules, and supports webhook injection. · mailinator.com, 14 Oct 2026
Automation: The REST API supports inbox and message retrieval, SMS retrieval, message injection, and integration with CI/CD pipelines. · mailinator.com, 5 Oct 2026
CLI and MCP: Mailinator publishes a Node.js CLI and MCP server supporting inbox listing, message retrieval and AI-assistant access. · github.com, 14 Oct 2026
Company: The pricing page says Mailinator is wholly owned and operated in the U.S.A., and the site footer identifies Manybrain, Inc. · mailinator.com, 5 Oct 2026
Company founding: ManyBrain states that Mailinator was founded in 2003 as a way to avoid spam from web forms. · manybrain.com, 14 Oct 2026
Company funding: Crunchbase identifies Manybrain, LLC as the legal entity and lists Mailinator as a private Ann Arbor company with 1–10 employees; no funding amount is shown on the accessible profile. · crunchbase.com, 14 Oct 2026
Company headquarters: ManyBrain lists its headquarters at 2232 S Main St, Suite 356, Ann Arbor, Michigan 48103. · manybrain.com, 14 Oct 2026
Company size: LinkedIn lists Manybrain LLC as privately held with 2–10 employees. · linkedin.com, 14 Oct 2026
Disposable inboxes: The service lets users create temporary addresses under the public mailinator.com domain without registration. · mailinator.com, 14 Oct 2026
Documentation: The January 21, 2026 documentation overhaul added reorganized navigation, API references, Postman material and product guides. · mailinator.com, 14 Oct 2026
Email receipt testing: Mailinator supports checking whether transactional and bulk email messages were delivered to test inboxes. · mailinator.com, 14 Oct 2026
Email testing: Teams can test email delivery, OTP, MFA, onboarding, password recovery, and other email workflows at scale. · mailinator.com, 5 Oct 2026
Founded: 2003 · mailinator.com, 23 Sept 2026
Framework integrations: Mailinator advertises use with Selenium, Cypress, Playwright and Puppeteer test frameworks. · mailinator.com, 14 Oct 2026
Headquarters: Ann Arbor, Michigan, USA · mailinator.com, 23 Sept 2026
Hosting certifications: The security page lists Linode SOC 1 Type 2, SOC 2 Type 2, HIPAA Type 1, HITECH, and PCI DSS certifications, and DigitalOcean SOC 2 Type 2, SOC 3 Type 2, and PCI DSS. · mailinator.com, 5 Oct 2026
Integrations: Inbound webhooks can accept HTTP POST messages from sources such as alert systems, Zapier, or Twilio and apply configured rules. · mailinator.com, 5 Oct 2026
Licence: The official Python SDK repository is released under the MIT license; Mailinator itself is delivered as a hosted service. · github.com, 14 Oct 2026
Limit: blocked addresses: A G2 reviewer reports that some websites blacklist Mailinator addresses and would like private temporary inboxes on the free tier. · g2.com, 14 Oct 2026
Limit: privacy and retention: Capterra reviewers complain that public inboxes are not private and that messages may appear slowly or remain available only briefly. · capterra.com, 14 Oct 2026
Load testing: Email load testing is offered, with the home page stating that an Enterprise subscription is required. · mailinator.com, 14 Oct 2026
Maker legal name: Mailinator is operated by Manybrain, LLC. · mailinator.com, 14 Oct 2026