Free Tool
Enter your sending domain. We'll check SPF, DKIM, DMARC, MX records and domain age, explain any problems in plain English, and tell you how much cold email you can safely send.
How it works
A single TXT record listing the services allowed to send from your domain. Keep it to one record and under 10 DNS lookups, or it fails silently.
Your provider signs every email with a private key; the public key lives in DNS. Without it, receiving servers have no proof the message is genuine.
Google and Yahoo require DMARC for bulk senders. Start with p=none to collect reports, then move to quarantine once everything aligns.
New domains and inboxes need weeks of gradual warm-up. Keep bounces under 2% and spam complaints under 0.3%, and send cold email from a secondary domain.
It looks up your SPF record (including nested DNS lookups), DKIM keys on common selectors, your DMARC policy, MX records, MTA-STS and BIMI, and your domain registration date. All checks use public DNS.
DKIM keys live on a selector name that is not discoverable from DNS alone. We check the common selectors used by Google, Microsoft and major sending tools. If you use a custom selector, your DKIM may still be fine.
With full authentication and a domain older than six months, 30 to 50 cold emails per inbox per day is a sensible ceiling. New domains should warm up for two to three weeks first, starting at 5 to 10 a day.
It is safer not to. Use a secondary domain (for example get-yourcompany.com) with its own authenticated inboxes, so any reputation damage never touches the domain your team uses every day.
Ghost runs LinkedIn and email sequences together, written in your voice, with replies in one inbox.