Pull every valid, deduplicated email address out of any pasted text or HTML
Generate professional HTML email signatures for Gmail and Outlook
Check email format, mail servers, disposable providers and role accounts
Test a domain's SPF, DKIM and DMARC email authentication records
Check a domain or IP against 10 major spam blacklists
Test an email subject line and body for spam-trigger words
Generate a ready-to-use mailto: link with To, CC, BCC, subject and body