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Mail Check
Verify SPF, DKIM, DMARC email authentication records, and check if a domain is disposable.
Check
DKIM Selector
default
google — Google Workspace
selector1 — Microsoft 365
selector2 — Microsoft 365
k1 — Mailchimp / Mailgun
k2
k3
s1 — SendGrid
s2 — SendGrid
zoho — Zoho Mail
mg — Mailgun
smtp
mail
dkim
selector
20150623 — Postmark
Custom...
Probe
Auto-detect DKIM selector
(tries all common selectors — uses more credits)
Check if domain is disposable
(against known disposable email domains)