Custom API Integration with Contact Form 7 — a practical guide to Contact Form 7 custom API with clear examples you can reuse in real projects.
Contact Form 7 Tutorial Series (89/100). Prefer one article? Read the complete Contact Form 7 tutorial.
Short description
Prefer `wpcf7_mail_sent` for success-only sync; use before_send_mail when abort matters.
API sync tip
timeout + error log
idempotency key
don’t block UX on slow APIs without care