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Head-to-head · Email Testing Software

Mailosaur vs Emailens

  • Updated Oct 2026
  • Both researched from official sources
  • 6 checks side by side
Higher score Mailosaur #7 in Email Testing Software 7.8/10 14-day trial Free trial✓ 5 of 5 features Visit Mailosaur
Emailens #8 in Email Testing Software 7.7/10 Free plan Free plan✓ 5 of 5 features Visit Emailens

Mailosaur leads on 0 checks, Emailens on 1, and 5 are even. Who comes out ahead on the 6 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreMailosaur · 7.8/10
  • Free planonly Emailens
  • Free trialonly Mailosaur

Mailosaur scores higher on our rubric for email testing software: 7.8 against 7.7 out of 10; our editors rank them #7 and #8.

Emailens offers free plan; Mailosaur doesn't.

Mailosaur is the better fit for automated email and SMS test workflows. Emailens is the better fit for budget-conscious developers and email teams.

  • Mailosaur fits best

    Automated email and SMS test workflows

  • Emailens fits best

    Budget-conscious developers and email teams

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 Mailosaur 7.8/10 Visit ↗ Emailens 7.7/10 Visit ↗
At a glance
Editor score 7.8 7.7
Ranking #7 in Email Testing Software #8 in Email Testing Software
Best for Automated email and SMS test workflows Budget-conscious developers and email teams
Pricing model Paid Free plan + paid
Starting price $20/mo $90/yr
Free plan — ✓ (best)
Free trial 14 days —
Deployment Cloud Cloud, Self-hosted, Browser extension
Platforms Web Web, Chrome extension
Support Email, Docs Email, Docs
Compliance ISO 27001, GDPR, SSO/SAML, 2FA GDPR, PCI DSS
Integrations 13 integrations 10 integrations
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business, Mid-market
Features Mailosaur 5/5 · Emailens 5/5
Spam checks ✓ ✓
Accessibility checks ✓ ✓
Link checks ✓ ✓
Inbox testing ✓ ✓
API access ✓ ✓
Specs
Email clients Not checked yet 21 clients
Device coverage Both Both
Our review
Pros
  • 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.
  • Free plan includes previews across all 21 email clients.
  • Checks CSS, dark mode, spam signals, links, and accessibility.
  • REST API, CLI, GitHub Actions, MCP, and AI workflows support automation.
Cons
  • There is no free plan.
  • Displayed Personal and Core prices use annual billing.
  • Advanced permissions, SSO, and account controls require Enterprise.
  • Client coverage is limited to 21 email clients.
  • Advanced CI/CD and unlimited simulated previews require Pro.
  • The free plan lacks full API access, CLI, and Visual Diff.
Our verdict

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 →

Emailens is an email quality-assurance tool for developers and email teams that need to review HTML emails before delivery. It previews messages across 21 email clients, reports CSS compatibility, simulates dark mode, and provides…

Read the review →
  1. MailosaurEmail Testing Software 7.814-day trial
  2. EmailensEmail Testing Software 7.7Free plan

Strengths and trade-offs

  • 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.

  • Emailens — where it wins

    • Free plan includes previews across all 21 email clients.
    • Checks CSS, dark mode, spam signals, links, and accessibility.
    • REST API, CLI, GitHub Actions, MCP, and AI workflows support automation.

    Where it doesn't

    • Client coverage is limited to 21 email clients.
    • Advanced CI/CD and unlimited simulated previews require Pro.
    • The free plan lacks full API access, CLI, and Visual Diff.

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