Email blacklist check
See whether the IP address your domain points to is listed on the blocklists mail servers use to filter spam.
What is an email blacklist?
Blocklists (DNSBLs) are public lists of IP addresses that have sent spam. Many mail servers check them and reject or filter mail from anything listed.
This check looks up the IP your domain's website points to. If you send through a separate mail server, check that server's IP too.
Listed? What to do
Stop sending from the affected IP, find out what triggered the listing, then request removal on that blocklist's website. Most delist within a few days once the cause is fixed.
More free tools
SPF checker
See which servers are allowed to send email for your domain.
Open tool
DKIM checker
Confirm your emails are signed, using your domain and selector.
Open tool
DMARC checker
Check your DMARC policy and where reports are sent.
Open tool
SSL checker
Check a domain’s certificate, issuer and expiry date.
Open tool
Fix deliverability for good
DoReach sets up SPF, DKIM, DMARC and MX when you add a domain, warms up your inboxes, and tests inbox placement before a campaign goes out.