smtp_check
Test an SMTP server connection by attempting to connect and authenticate. Optionally sends a test email to verify full sending capability.
imap_check
Test an IMAP server connection by attempting to connect and authenticate. Use this to verify email receiving configuration.
smtp_finder
Look up SMTP server settings (host, port, encryption) for a given email provider. Use this to find the correct SMTP configuration for services like Gmail, Outlook, SendGrid, etc.
imap_finder
Look up IMAP server settings (host, port, encryption) for a given email provider. Use this to find the correct IMAP configuration for services like Gmail, Outlook, Yahoo, etc.
blacklist_check
Check if a domain or IP address is listed in popular email blacklists (DNSBLs). Being blacklisted can severely impact email deliverability.
bimi_host
Host and serve your BIMI SVG file for email authentication
mx_lookup
Look up MX (Mail Exchanger) records for a domain. Returns the mail servers and their priorities.
txt_lookup
Look up all TXT records for a domain. TXT records contain SPF policies, domain verification tokens, DKIM keys, and other metadata.
cname_lookup
Look up CNAME (Canonical Name) records for a domain. Shows where a hostname aliases to.
ptr_lookup
Reverse DNS lookup. Find the hostname associated with an IP address. A valid PTR record is important for email sending reputation.
dns_lookup
Look up all DNS records for a domain in one query. Returns A, AAAA, CNAME, MX, NS, TXT, and SOA records.