I was sending too many emails from my WordPress site.

NOW – Nostr Outbox for WordPress replaces email notifications with Nostr messages.

Users can sign in with Nostr, receive order updates via Nostr DMs, and pay using Lightning.
Site owners can establish a NIP-05 identity and receive admin notifications via Nostr instead of email.

Stop emailing users. Send Nostr messages instead.

https://github.com/Mnpezz/nostr-outbox-for-wordpress