What is Maildev?
Runs as a local SMTP server with a web inbox interface to capture and review emails generated by your application during development. Supports AI agent integration through the Model Context Protocol for automated email inspection.
Maildev pricing
We don't have Maildev's full plan breakdown yet (its pricing page resisted automated reading). Here's what we could confirm. Always check live pricing for exact numbers.
Platform & deployment
Independently observed- CLI
- Web
- Self-hosted
Security & compliance
Known vulnerabilities: 1 (0 in the last 12 months), max severity CRITICAL sourcea count reflects scale & disclosure, not quality
Maildev alternatives
Other email testing dev we track, ranked by the same independent score.
- Testmail.appProgrammable email testing service for developers and QA automating end-to-end test verificationlow · 42%
- MailosaurPlatform for testing email and SMS communications end-to-end before productionmedium · 55%
- Email on AcidEmail testing and validation platform for pre-send campaign quality assurancemedium · 66%
- GreenMaillow · 31%
- MailSlurpOn-demand email and SMS testing platform for developersmedium · 54%
- MailHoglow · 19%
Compare Maildev
Side by side against other email testing dev, attribute by attribute, with a source on every value.
The Vioscale score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for Maildev, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Pricing transparency | 80 | 0.08 | 6.7 | ✓ |
| Price level | 100 | 0.05 | 5.2 | ✓ |
| Development activity | 44 | 0.09 | 4.1 | ✓ |
| Release cadence | 74 | 0.05 | 3.9 | ✓ |
| Dependent projects | 42 | 0.06 | 2.6 | ✓ |
| Stars | 71 | 0.03 | 1.9 | ✓ |
| Security score | 46 | 0.04 | 1.9 | ✓ |
| Reliability | 0 | 0.07 | 0.0 | - |
| Capabilities | 0 | 0.08 | 0.0 | - |
| Integrations | 0 | 0.09 | 0.0 | - |
| Security posture | 0 | 0.07 | 0.0 | - |
| Package downloads | 0 | 0.14 | 0.0 | - |
| Developer Q&A activity | 0 | 0.06 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.