vioscale
Comparison

MailHog 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.

MailHog full profile →Mailosaur full profile →
Machine formatsJSONMarkdownGraphQLor send Accept: application/json
MailHog43
★Mailosaur61
Score
Vioscale score
MailHog43 / 100low · 19%
Mailosaur61 / 100medium · 55%
Pricing
Free tier
MailHog–
Mailosaur✗
Model
MailHogcommercial
Mailosaurcommercial
Price level
MailHog–
Mailosaurmid
Starting price
MailHog–
Mailosaur$20
Transparent
MailHog–
Mailosaur✓
Integrations
Count
MailHog–
Mailosaur20
Security
Disclosure policy
MailHog–
Mailosaur✓
Gdpr
MailHog–
Mailosaur✓
Iso27001
MailHog–
Mailosaur✓
Pci
MailHog–
Mailosaur✓
Scorecard
MailHog2.6
Mailosaur–
Vulnerabilities
Adoption
Dependent repos
MailHog11
Mailosaur–
Github stars
MailHog16,138
Mailosaur–
Activity
Commits last 30d
MailHog0
Mailosaur–
Release
Cadence days
MailHog11
Mailosaur–
History
MailHog20 items
Mailosaur–
License
Spdx
MailHogMIT
Mailosaur–
Language
Primary
MailHogGo
Mailosaur–
Market
Availability

Capabilities

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

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

What each one is

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

MailHog

MailHog intercepts and stores SMTP messages during development, providing a web UI and JSON API for viewing and managing test emails, with the option to forward messages to real mail servers.

Independently observed

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.

MailHog

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
MailHog✓
Mailosaur✓
macOS
MailHog✓
Mailosaur✗
Linux
MailHog✓
Mailosaur✗
CLI
MailHog✗
Mailosaur✓
Deployment
Cloud / SaaS
MailHog✓
Mailosaur✓
Self-hosted
MailHog✓
Mailosaur✗

Integrations

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

MailHog

Not documented yet.

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.