Emailens vs Litmus
Emailens
emailens.dev
Litmus
litmus.comSide by side
| Figure | Emailens | Litmus |
|---|---|---|
| Price from | $9/mo | $79/mo |
| Free plan | Yes | — |
| Free trial | — | Yes |
| Open source | Yes | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | — |
| Plans published | 7 | 7 |
| Spec score · Email Testing Software | 9.4 (#1) | 8.9 (#4) |
| Integrations | The product offers a web app, REST API, MCP server, GitHub Action, and standalone @emailens/engine package. | Integrations cover ESPs, code editors, Slack, Trello, Dropbox, Google Drive, OneDrive, Salesforce Marketing Cloud, Marketo, and other martech tools. |
| Security | The security page says unsaved previews are processed in memory and authenticated previews and screenshots are automatically purged after 30 days. | The Validity Trust Center lists Litmus security materials including its Security White Paper and SOC 2 Type 2 report. |
| Support | The security page says vulnerability reports are acknowledged within 48 business hours. | Litmus directs customers to its Help Center and support team for product guidance and assistance. |
| What it does | Emailens previews and audits HTML email rendering across 21 email clients, producing compatibility scores, warnings, dark-mode variants and screenshots. | Litmus is a web-based email development and optimization platform for building, previewing, testing, tracking, and reviewing campaigns. |
Plans
Emailens
- FreeFree
- FreeFree
- Dev$9 a month
- Dev$9 a month
- Pro$19 a month
- Pro$19 a month
- Team$49 a month
Litmus
- Litmus Basic$99 a month
- Litmus Plus$199 a month
- Litmus Core$500 a month
- Litmus Basic yearly$79 a month
- Litmus Basic monthly$99 a month
- Litmus Core yearly$417 a month
- Litmus Core monthly$500 a month
In their own words
Emailens
Emailens previews HTML email rendering across 21 email clients and checks compatibility across 298 CSS and HTML features. It scores compatibility from 0 to 100 per client and provides rendered screenshots and simulated dark mode variants. Inputs include HTML, React Email JSX, MJML, and Maizzle. Developers can use a web app, REST API, MCP server, GitHub Action, or standalone @emailens/engine package. Campaign HTML can be imported from a view-in-browser link; Mailchimp URL import is marked verified, while other listed platforms require pasted HTML. Emailens discusses merge tags for Mailchimp, Klaviyo, HubSpot, Braze, and Salesforce Marketing Cloud. The free plan costs nothing and includes 30 simulated previews per day, all 21 clients, one monitored domain, seven-day audit history, and three AI Fixes. Paid plans are Dev at $9 a month, Pro at $19 a month, and Team at $49 a month. Emailens says unsaved previews are processed in memory and authenticated previews and screenshots are purged after 30 days.
Litmus
Litmus is an email workflow platform for building, testing, monitoring, and analyzing campaigns. Teams can preview emails across more than 100 email clients and devices, while Litmus Test automates pre-send quality checks. Its extension can validate links, images, and tracking. Email Guardian monitors deployed emails around the clock and alerts users to issues such as failing links and broken renders. Litmus Builder offers code and visual editors; emails can start from templates, be created from scratch, or be imported from cloud storage. Listed integrations include Salesforce Marketing Cloud, Mailchimp, Marketo, Eloqua, HubSpot, Klaviyo, Slack, Trello, and cloud storage. Some integrations require Plus or Enterprise, and ESP Sync availability depends on the plan and supported provider. REST APIs are available for Email Previews and Email Analytics, with access evaluated case by case. Litmus offers web, extension, and API access. Monthly prices listed are $99 a month for Basic, $199 a month for Plus, and $500 a month for Core. There is no free plan, but a 7-day trial is available.