
Take control of email content
Email Insights, an Inbox Insights tool, analyzes the contents of your email campaigns before you send them, generating recommendations to fix deliverability red flags.
4 reasons to test content
Improving email contents is just as important as email validation.
Protect your sender reputation
Avoid the spam folder by staying clear of IP address blocklists and authenticating your emails with SPF and DKIM records.
Avoid looking like spam
Stay clear of ISP spam filters and minimize your spam score by removing spam-like words from your subject lines and content.
Deliver a good brand experience
Send with confidence knowing that campaigns will look great in email clients used by your subscribers.
Maximize email marketing ROI
Marketers can get the most out of their email marketing campaigns by improving their chances of landing in the inbox.
Test emails without fuss

Create a new Inbox Insights report in MailerCheck.
Send emails from your email service provider to MailerCheck.
View results of deliverability tests on emails and email templates.
Email Insights conducts 6 email tests
Spam filter test
Uncover email deliverability issues with SpamAssassin.
HTML validation
Identify poorly-formed tags and CSS in HTML emails.
Content check
Highlight spam-like words and unusual formatting.
Links and images
Fix broken links and missing attributes for files.
Sender authentication
Send from an authorized domain and mail server.
IP address blocklist
Check if your sending domain is on a blocklist.
More email testing tools coming
Optimize deliverability even more with these exciting, new inbox features.
Inbox Placement
Find out how email campaigns will perform with specific domains, checking if they land in the inbox or the spam folder.
Inbox Preview - Future Feature
Test email designs by generating email previews and screenshots for Gmail, Outlook, Yahoo and mobile devices.
Pricing
Email Insights uses the same credits that you use to verify email lists.
Each email analysis costs 200 credits.
Pay as you go
Monthly subscription
Ready to optimize your email list?
Try cleaning and analyzing your list in minutes. There are no long term commitments, so you can see the magic for yourself.