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Head-to-head · Email Testing Software

Mailinator vs Mailosaur

  • Updated Oct 2026
  • Both researched from official sources
  • 7 checks side by side
Higher score Mailinator #6 in Email Testing Software 7.9/10 Free plan · 14-day trial Free planFree trial✓ 3 of 5 features Visit Mailinator
Mailosaur #7 in Email Testing Software 7.8/10 14-day trial Free trial✓ 5 of 5 features Visit Mailosaur

Mailinator leads on 1 check, Mailosaur on 1, and 5 are even. Who comes out ahead on the 7 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreMailinator · 7.9/10
  • Lowest starting priceMailosaur · $20/mo
  • Free planonly Mailinator
  • Free trialboth
  • Most featuresMailosaur · 5 of 5

Mailinator scores higher on our rubric for email testing software: 7.9 against 7.8 out of 10; our editors rank them #6 and #7.

Mailinator offers free plan; Mailosaur doesn't. Mailosaur is cheaper to start at $20/mo against $79/mo.

Mailinator is the better fit for workflow and private-inbox testing. Mailosaur is the better fit for automated email and SMS test workflows.

  • Mailinator fits best

    Workflow and private-inbox testing

  • Mailosaur fits best

    Automated email and SMS test workflows

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.

Side by side

Feature Mailinator 7.9/10 Visit ↗ Mailosaur 7.8/10 Visit ↗
At a glance
Editor score 7.9 7.8
Ranking #6 in Email Testing Software #7 in Email Testing Software
Best for Workflow and private-inbox testing Automated email and SMS test workflows
Pricing model Free plan + paid Paid
Starting price $79/mo $20/mo (best)
Free plan ✓ (best) —
Free trial 14 days 14 days
Free trial length 14 days 14 days
Deployment Cloud Cloud
Platforms Web Web
Support Email, Phone, Docs Email, Docs
Compliance SSO/SAML ISO 27001, GDPR, SSO/SAML, 2FA
Integrations 6 integrations 13 integrations
Built for Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features Mailinator 3/5 · Mailosaur 5/5
Spam checks Not checked yet ✓ (best)
Accessibility checks Not checked yet ✓ (best)
Link checks ✓ ✓
Inbox testing ✓ ✓
API access ✓ ✓
Specs
Email clients Not checked yet Not checked yet
Device coverage Not checked yet Both
Our review
Pros
  • Public and private inboxes support varied test workflows
  • APIs, webhooks, and routing rules support automation
  • Integrates with Selenium, Cypress, Playwright, and Puppeteer
  • Virtual inboxes support unlimited test email addresses.
  • Checks accessibility, spam, links, and compatibility across 90+ clients.
  • Integrates with major test frameworks, CI tools, and a REST API.
Cons
  • Focused on workflow testing rather than email-client rendering previews
  • SMS numbers cost extra
  • Private domains and team features require paid tiers
  • There is no free plan.
  • Displayed Personal and Core prices use annual billing.
  • Advanced permissions, SSO, and account controls require Enterprise.
Our verdict

Mailinator is a cloud-based email and SMS workflow testing platform for developers, QA teams, and testing organizations. It combines public and private inboxes with private testing domains, message injection, message inspection, email…

Read the review →

Mailosaur is a cloud platform for testing email and SMS workflows, aimed at individual testers, collaborative QA teams, and enterprises validating end-to-end messaging journeys. Virtual inboxes and unlimited test email addresses support…

Read the review →
  1. MailinatorEmail Testing Software 7.9Free plan · 14-day trial
  2. MailosaurEmail Testing Software 7.814-day trial

Strengths and trade-offs

  • Mailinator — where it wins

    • Public and private inboxes support varied test workflows
    • APIs, webhooks, and routing rules support automation
    • Integrates with Selenium, Cypress, Playwright, and Puppeteer

    Where it doesn't

    • Focused on workflow testing rather than email-client rendering previews
    • SMS numbers cost extra
    • Private domains and team features require paid tiers

  • Mailosaur — where it wins

    • Virtual inboxes support unlimited test email addresses.
    • Checks accessibility, spam, links, and compatibility across 90+ clients.
    • Integrates with major test frameworks, CI tools, and a REST API.

    Where it doesn't

    • There is no free plan.
    • Displayed Personal and Core prices use annual billing.
    • Advanced permissions, SSO, and account controls require Enterprise.
  • Mailinator7.9/10 · Free plan · 14-day trial

    A strong choice for inbox and workflow testing, but not rendering or spam analysis.

    Visit MailinatorFull verdict →
  • Mailosaur7.8/10 · 14-day trial

    A strong choice for automated email and SMS validation across clients, devices, and test frameworks.

    Visit MailosaurFull verdict →

More comparisons

All email testing software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update