Plans are priced by the domains you watch. Add a domain and Greyphish generates the lookalikes an impersonator would register, then checks every new certificate and registration against them.
Watch one domain for lookalikes, with a daily email of what was found.
Watch every domain you own, and send what is found to your own tools.
A registrable domain such as yourcompany.com or yourcompany.co.uk. Subdomains are covered by the domain they belong to, and names without a suffix cannot be watched.
Findings appear on your dashboard as they are detected. Both plans get a daily email digest; Pro can also send each match to a webhook.
Yes, at any time. Billing is monthly through Stripe; see the refund policy.