| What it does | Not given
| Test real inbox placement and 42 technical checks with no signup required
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| Stage | Not given
| Established
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| Founded | 2018
| 2026
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| Based in | Not given
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| Pricing model | Not given
| freemium
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| Pricing | Free plan with 200 monthly requests. Paid plans: Personal ($9/mo, 2,000 requests), Professional ($15/mo, 5,000-10,000 requests), Business ($40/mo, 25,000-200,000 requests).
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| Key features | - Connect email services (Mailgun, Mailjet, SendGrid, Amazon SES, Postmark, Gmail, Outlook)
- Create and manage email templates
- Send emails from client-side code with SDKs
- Support for attachments with size limits by plan
- Multi-user access and team management
- Email history and analytics
- Dynamic content with parameterized templates
- Suppressions list for unsubscribe management
- CC and BCC recipient support
- Domain whitelist and origin whitelisting
| - Real inbox placement testing in Gmail, Outlook, Yahoo and more
- 42 technical checks across authentication, infrastructure, content and compliance
- SPF, DKIM and DMARC verification
- Blocklist lookup across 20+ DNS blocklists
- SpamAssassin-compatible spam score
- Link reputation checking
- HTML structure analysis
- Bulk sender rules for Gmail and Yahoo compliance
- Fix plan with recomputed score for corrections
- API and MCP server integration options
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| What makes it different | - Email orchestration layer that works with existing email services rather than operating its own delivery servers
- Eliminates security risk of exposing API credentials in client-side code
- No ads and no sale of email data in free tier
- Automatic multipart email format with HTML and plain-text fallback
- GDPR and HIPAA compliant with flexible data retention controls
| - Two independent spam engine scores instead of one, including Gmail and Yahoo 2024 bulk sender rules
- Fix plan recomputes points by scoring corrected message rather than estimating
- No account, signup or credit card required to run tests
- Built by practitioner with years of live sending infrastructure debugging experience
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| Free plan | Not given
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| Open source | Not given
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| Platforms | Not given
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| Public API | Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 78 ● no change since last check | 18 ● no change since last check |
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| Trust Flow (Majestic) | 35 | 17 |
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| Citation Flow (Majestic) | 50 | 25 |
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| Referring domains (Majestic) | 1752 | 35 |
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