Tools
Free tools for cold-email senders
Quick, focused utilities for the deliverability and outbound-email work we already do every day at Clement. No signup, no email gate.
Deliverability
-
SPF, DKIM & DMARC checker
Grade your domain's email authentication, detect the mailbox provider, and check Gmail, Yahoo and Microsoft bulk sender rules.
Open tool →
-
Email header analyzer
Paste email headers to check SPF, DKIM and DMARC alignment, trace the route hop by hop, and decode spam verdicts, all in your browser.
Open tool →
-
SMTP error code lookup
Paste a bounce or NDR and see what the code means, whether it's a hard or soft bounce, and how to fix it.
Open tool →
Writing
-
Cold email checker
Highlight spam trigger words, score length, links, CTA and readability, and get an AI rewrite.
Open tool →
-
AI cold email generator
Paste prospect context, get three personalized first lines, two email variants and a follow-up.
Open tool →
-
Spintax generator & checker
Validate spintax, count variations, preview spins, and convert between {a|b}, Instantly and lemlist syntax.
Open tool →