Contact Form 7 Plugin Architecture — a practical guide to Contact Form 7 architecture with clear examples you can reuse in real projects.
Contact Form 7 Tutorial Series (83/100). Prefer one article? Read the complete Contact Form 7 tutorial.
Short description
Knowing `WPCF7_ContactForm` and `WPCF7_Submission` helps you write safer addons.
Key concepts
Contact form post type/object
Form-tags / mail-tags
WPCF7_Submission
Mail templates
REST/AJAX feedback