Litmus vs Premailer
Overview
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Detailed Comparison
Litmus is a testing service for web and marketing professionals. It allows people to cross-browser test their websites, and test their email newsletters across a range of email clients and spam filters. | For the best HTML e-mail delivery results, CSS should be inline. This is a huge pain and a simple newsletter becomes un-managable very quickly. This script is the solution. |
You send us a copy of your email design, either by uploading the HTML or sending us a test email. Within a couple of minutes you'll see screenshots of your email as it's rendered by all the different email clients. Made a change? One click starts a re-test.;PREVIEW IN REAL EMAIL CLIENTS- Litmus shows you screenshots of your email newsletter as it looks across all major email clients.;CHECK ON MOBILE DEVICES- See your email on the most popular mobile devices. Litmus even lets you realistically scroll your email on the device.;EVERYTHING IN ONE PLACE- We preview your message on every major mobile device and email client.;LIGHTNING-FAST- If you're trying to fix a rendering problem in your campaign, the last thing you want is to wait for your previews. We run hundreds of servers to ensure our system is the fastest in the industry.;WORKS WITH ANY EMAIL PROVIDER- Litmus is the perfect complement to your email marketing program. As an independent company, our email testing tools are compatible with any email provider, so there's no need to switch. | CSS styles are converted to inline style attributes;Relative paths are converted to absolute paths;CSS properties are checked against e-mail client capabilities;A plain text version is created (optional) |
Statistics | |
GitHub Stars - | GitHub Stars 2.4K |
GitHub Forks - | GitHub Forks 364 |
Stacks 115 | Stacks 17 |
Followers 111 | Followers 24 |
Votes 26 | Votes 0 |
Pros & Cons | |
Pros
| No community feedback yet |
Integrations | |
| No integrations available | |
What are some alternatives to Litmus, Premailer?
Email on Acid
Email on Acid is the most affordable, self-serve email testing platform in the world. We can help you maximize the success of your email marketing efforts by diagnosing and improving your renderability, deliverability, click-throughs and conversions.
Mailtrap
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Mailinator
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MTN Email Verifier
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Mailpit
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SendPit
Capture and inspect emails in development without sending to real users. SMTP sandbox with team collaboration, secure encryption, and responsive previews.
MailMoxie: Email Deliverability Testing Platform & Consulting
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MailMonitor: Inbox delivery optimization tools & services
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Free Email Newsletter Spam Test
Unspam.email is an AI-powered email deliverability and spam testing platform designed to help marketers, developers, and growth teams ensure their emails land in the inbox instead of the spam folder. It provides pre-send testing that evaluates emails across technical setup, content quality, and design, delivering a clear spam score along with actionable recommendations before campaigns are sent. Key features include inbox placement testing across major email providers, blacklist and domain reputation monitoring, SPF, DKIM, and DMARC validation, and cross-device email previews. It also offers an AI-powered heatmap that predicts how recipients are likely to engage with email content, helping optimize layout and improve click-through rates. By identifying deliverability issues early, Unspam.email helps teams protect sender reputation, reduce spam risk, and improve overall email campaign performance.
