Which Email Tool Do You Need?
- Writing a campaign? Score your subject line and preheader with the Email Subject Line Tester, and rank several ideas at once.
- Importing a new list? Remove duplicates, typos, broken and throwaway addresses with the Email List Cleaner, then download a clean CSV.
- Email landed in spam or arrived late? Paste its headers into the Email Header Analyzer to see SPF, DKIM and DMARC results and every delivery hop.
- Adding a new email service, or seeing SPF errors? Combine every sender into one record, count DNS lookups and merge duplicates with the SPF Record Generator and Checker.
- Emails landing in spam, or sending to Gmail in bulk? Build or check your record with the DMARC Record Generator and Checker.
Every tool follows current mailbox rules, such as the Google email sender guidelines, RFC 7208 for SPF, RFC 9989 for DMARC and RFC 8601 for authentication results, and runs entirely in your browser. More email tools are added regularly.
Planning your emails? Read our email marketing strategy guide and how to generate high quality leads.
Frequently Asked Questions
1Are these email marketing tools free?
Yes. Every tool is free, needs no signup, and has no usage limits.
2Do you see my subject lines, lists or domain settings?
No. All tools run entirely in your browser. Subject lines, records and email lists you enter never leave your device.
3Do these tools send test emails?
No. They check and build things in your browser without sending any email, so nothing reaches your list by accident.