Email list verification and deliverability testing tool
Take control of your email deliverability and increase open rates and ROI with quick, reliable insights that help you make strategic decisions about your domains, IPs, email list and campaigns.
And receive 200 free credits to get started
Guaranteed 98%+ delivery rate with your verified email list.
Tools to test and optimize email content and inbox placement.
12+ years of email deliverability expertise and success.
improve your email marketing
Validate your email list in seconds
Verify a single email address, upload your entire email list, or validate new emails in real-time with the API. Get automated recommendations about list maintenance so you can clean up invalid emails for maximized deliverability.
Analyze and improve email content
Protect your sender reputation and boost deliverability by testing email content before you hit send. Email Insights flags spam words, broken links, blocklists and more so your emails avoid spam folders and reach the inbox.
Test for deliverability before you send
Predict whether your emails will hit the inbox or go straight to the spam folder with Inbox Placement. Test deliverability against major mailbox providers including Google, AOL, Outlook, Yahoo! and more.
Monitor your domain activity
Keep track of how your domain is being used to send emails in real time. Identify issues before they affect your deliverability and prevent unauthorized use of your account to avoid spoofing and phishing attacks.
What MailerCheck users think
Join 63,695 happy customers worldwide who are already using MailerCheck.
I was introduced to MailerCheck by a friend of mine when I couldn't find a credible solution to help us verify our customer data. We're very conscious of our email marketing and sales email efforts and try to keep a tidy and up-to-date CRM. MailerCheck is a vital part of this process and it's been so easy to onboard and use their solution on a regular basis to ensure high accuracy of email delivery with our campaign.
Straightforward and fair pricing is always our goal. Pay for only what you need—no long term commitments.