vioscale
Comparison

Litmus vs Mailosaur

On the evidence we track, Mailosaur leads this comparison with a composite score of 61/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Litmus full profile →Mailosaur full profile →
Machine formatsJSONMarkdownGraphQLor send Accept: application/json
Litmus40
★Mailosaur61
Score
Vioscale score
Litmus40 / 100low · 12%
Mailosaur61 / 100medium · 55%
Pricing
Free tier
Litmus–
Mailosaur✗
Model
Litmus–
Mailosaurcommercial
Price level
Litmus–
Mailosaurmid
Starting price
Litmus–
Mailosaur$20
Transparent
Litmus–
Mailosaur✓
Integrations
Count
Litmus12
Mailosaur20
Security
Disclosure policy
Litmus–
Mailosaur✓
Gdpr
Litmus✓
Mailosaur✓
Iso27001
Litmus–
Mailosaur✓
Pci
Litmus–
Mailosaur✓
Soc2
Litmus✓
Mailosaur–
Market
Availability

Capabilities

Feature-by-feature on the axes that matter for email testing dev. “-” means undocumented, not absent.

Capabilities
API assertions
Litmus-
Mailosaur✓
Rendering preview
Litmus-
Mailosaur✓
Spam score check
Litmus-
Mailosaur✓
Blocklist deliverability check
Litmus-
Mailosaur-
SMS testing
Litmus-
Mailosaur✓
Production sending addon
Litmus-
Mailosaur-
Ci cd integration
Litmus-
Mailosaur✓
Multi user inboxes
Litmus-
Mailosaur✓
Open source
Litmus-
Mailosaur-

What each one is

The product in its own terms, so the numbers below have context.

Litmus

Not documented yet.

Mailosaur

Leader

Provides tools for validating emails and SMS messages through dedicated inboxes and phone numbers, with rendering previews across devices and email clients, integration into CI/CD pipelines, and automation via APIs and testing framework support.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Litmus

Pricing not documented yet.

Mailosaur

Leader
from $20/moSubscription14-day trial

From $20/month (billed annually). Free 14-day trial.

  • Personal$20/month (billed annually)
    • Email compatibility testing
    • API for test automation
    • Forward emails to external addresses
  • Core$50/month (popular)
    • Team access
    • Multiple inboxes
    • Email accessibility testing
    • Mail rules
    • POP3/IMAP connectivity
    • +1 more
  • EnterpriseContact sales
    • Custom users and inboxes
    • SSO (SAML2/OIDC)
    • Separate permissions
    • Enterprise security
    • Account manager
    • +1 more
as of verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platforms
Web
Litmus✓
Mailosaur✓
CLI
Litmus✗
Mailosaur✓
Deployment
Cloud / SaaS
Litmus✓
Mailosaur✓

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

Litmus

12 total
  • Salesforce Marketing Cloud
  • Adobe Marketo
  • Oracle Responsys
  • Oracle Eloqua
  • HubSpot
  • Acoustic Campaign
  • Mailchimp
  • Campaign Monitor
  • Trello
  • Slack
  • Dropbox
  • Dreamweaver
Independently observed

Mailosaur

Leader
21 total
  • Selenium
  • Playwright
  • Cypress
  • TestCafe
  • WebdriverIO
  • Cucumber
  • Robot Framework
  • Ghost Inspector
  • Postman
  • Insomnia
  • PowerShell
  • Node.js
  • Java
  • Python
  • Ruby
  • .NET
  • PHP
  • Go
  • JavaScript
  • Okta
  • Microsoft Entra
Independently observed

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.