Subject line tester
Score and preview your subject line before you hit send.
UTM link generator
Build tagged campaign URLs so your analytics stay clean.
Email DNS checker
Look up SPF, DKIM, and DMARC records for any domain.
SPF record checker
Count an SPF record’s DNS lookups and see every include.
EML viewer
Open and read raw .eml files right in your browser.
Spam word checker
Check your email copy against a list of words and phrases to review.
Mailto link generator
Make mailto links with a prefilled subject and body.
DMARC record generator
Generate a DMARC policy record to protect your domain.