Emailens
7.7#3 in email testing softwareFrom $9 a monthFree planWebAPIExtensionSelf-hosted
VisitEmailens vs Unspam.email
Unspam.email
7.4#5 in email deliverability softwareFrom $5 a monthFree planWebAPI
VisitWhat both publish
| Fact | Emailens | Unspam.email |
|---|---|---|
| API authentication | Authenticated API calls use an ek_live bearer token or x-api-key header. | REST requests use bearer tokens created per integration; tokens can be revoked individually and invalid or unauthorized calls return 401 or 403. |
| Integrations | The product offers a web app, REST API, MCP server, GitHub Action, and standalone @emailens/engine package. | The API is designed to receive real messages from SES, Postmark, SendGrid, Mailgun or a customer’s SMTP system. |
| MCP integration | The MCP server offers local analysis tools and optional hosted screenshot and sharing tools for Claude Desktop, Claude Code, Cursor and other MCP clients. | The MCP server exposes spam checks, placement tests, previews, screenshots, heatmaps, autopilot scheduling, DMARC reports and account status through OAuth 2.1. |
| Privacy | The privacy policy says users can sign in with email and password or Google or GitHub, and can request data rights through [email protected]. | The privacy policy says submitted test emails, including their headers and message content, are collected and stored to provide the service. |
| Purpose | Emailens previews and checks how HTML emails render across 21 email clients. | Unspam is an email deliverability platform that checks spam signals, sender authentication, blacklists, previews, heatmaps, and inbox placement. |
| Security | The security page says unsaved previews are processed in memory and authenticated previews and screenshots are automatically purged after 30 days. | The privacy policy says stored data is kept on services and providers certified to ISO/IEC 27001:2013, PCI DSS, SOC 1 Type II, and SOC 2 Type II or higher. |
Emailens plans
- FreeFree
- Dev$9 a month
- Pro$19 a month
- Team$49 a month
Unspam.email plans
- FreeFree
- No accountFree
- Custom plan$5 a month
- Basic$9 a month
- Business$19 a month
- Agency$29 a month
Pick Emailens if…
Emailens may suit hobbyists, individual developers, freelance developers, indie hackers, and creators working with HTML email. It offers both a web interface and developer integration options.
Pick Unspam.email if…
It suits marketers, founders, agencies and product teams that need to check email deliverability or track inbox placement. Teams evaluating the free plan should account for its test, retention and feature limits.