Side by side
Emailens vs MailHog
Both stand on email testing software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan Open source APIExtensionSelf-hosted+1
Emailens combines multi-client rendering previews with compatibility scores and developer-focused integrations. The free plan provides a way to use the service, while higher listed plans add larger preview allowances and other plan-specific limits.
Visit Emailens Free plan APILinuxMac+2
MailHog offers message capture, inspection, and API access for email testing, with optional delivery to real SMTP servers. Its default memory storage has a single-instance limit for Elastic Beanstalk deployments.
Visit MailHogThe facts
| Emailens | MailHog | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Yes | Not published |
| Runs on | API, Extension, Self-hosted, Web | API, Linux, Mac, Self-hosted, Web |
| Lowest paid plan | Dev: $9 a month | Free or on request |
| Plans published | 4 | 1 |
| Maker | Not published | Not published |
| Website | emailens.dev | github.com |
| On email testing software | #1 of 28 | #2 of 28 |
Emailens: what it does well
- Previews across 21 email clients.
- Accepts HTML, React Email JSX, MJML, and Maizzle.
- Offers a web app, REST API, MCP server, and GitHub Action.
- Free plan includes 30 previews per day.
- States TLS 1.3 connections and AES-256 encryption at rest.
What to know first
- No free trial is listed.
- Free plan has a 30-preview daily limit.
- Mailchimp URL import is the only verified URL import.
- Authenticated previews and screenshots are purged after 30 days.
MailHog: what it does well
- Free and released under the MIT license.
- Displays messages as plain text, HTML, or source.
- API can retrieve messages and individual MIME parts.
- Supports memory, MongoDB, and Maildir storage.
- Includes a feature for failure testing.
What to know first
- In-memory storage limits Elastic Beanstalk to one instance.
- Load-balanced deployments require MongoDB-backed storage.
- Default SMTP and HTTP ports are 1025 and 8025.
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