Reach the inbox every time

Get your email scanned by every major spam filter before you send

Get started for free

Spam hero
Sheriff green

Reputation check

Get your IP addresses and any domain names used in your email checked against known blacklists, and get notified if any of them could affect your delivery.

Mail green

Actionable advice

Not only do we show you your spam score, we also explain why you got that score. This advice helps you adapt your email's content to improve delivery rates.

Contact green

Sender verification

Verify that email authentication methods such as DKIM, DomainKeys, SenderID, and Sender Policy Framework are set up correctly.


Scanned by every major spam filter

Tests include spam filters from ISPs and webmail providers, as well as corporate filters.

Server-side filters

  • Barracuda
  • Messagelabs
  • Postini
  • SpamAssassin

ISP Filters

  • AOL Mail
  • Gmail
  • GMX
  • Outlook
  • Yahoo! Mail

Spam Testing for Designers

Get your emails scanned

Get your emails scanned by all the major spam filters before sending.

Reach the inbox

Ensure your designs are seen by as many subscribers as possible.

Litmus for Designers

Spam Testing for Marketers

Improve your delivery rates

Improve your deliverability by scanning your emails through all the major spam filters before you send.

Get actionable deliverability tips

Receive a spam score as well as actionable tips for improving your delivery rates for every email send.

Increase the ROI of every email

Improve your overall email performance by ensuring more emails are getting through to your subscribers.

Litmus for Marketers

Spam Testing for Agencies

Identify issues keeping client emails from the inbox

Quickly identify any deliverability issues with your clients’ emails before they potentially get in the Spam folder.

Get actionable deliverability tips

Review all major spam tools and protocols to see where issues may lie, and utilize actionable suggestions you can make to improve your clients’ deliverability.

Litmus for Agencies