Emailens
7.7#3 in email testing softwareFrom $9 a monthFree planWebAPIExtensionSelf-hosted
VisitEmailens vs SMTP Labs
What both publish
| Fact | Emailens | SMTP Labs |
|---|---|---|
| API authentication | Authenticated API calls use an ek_live bearer token or x-api-key header. | API requests use an X-API-KEY header, and newly created token values are shown only once. |
| Documentation depth | Documentation includes getting started, REST endpoints, MCP setup and tools, client reference, engine APIs, rate limits and GitHub Action guidance. | The site publishes API reference, setup pages, feature pages, CI and E2E guides, an llms.txt index, and markdown versions of documentation pages. |
| Integrations | The product offers a web app, REST API, MCP server, GitHub Action, and standalone @emailens/engine package. | The maker documents CI use with GitHub Actions, Jenkins, GitLab CI, and CircleCI, using standard SMTP and the REST API. |
| Purpose | Emailens previews and checks how HTML emails render across 21 email clients. | SMTP Labs is an email testing service that receives test email over SMTP and lets users inspect it through the web UI, IMAP, POP3, or API. |
Emailens plans
- FreeFree
- Dev$9 a month
- Pro$19 a month
- Team$49 a month
SMTP Labs plans
- LiteFree
- Pro$7 a month
- Max$20 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 SMTP Labs if…
SMTP Labs suits developers and teams who need to inspect test email without sending it to external recipients. Its documented CI integrations include GitHub Actions, Jenkins, GitLab CI, and CircleCI.