# double-opt-in/5.1.6/src/Addon

Double Opt-In for Contact Form 7 – Secure, GDPR-Compliant Email Verification, version 5.1.6. 4 entries.

- Page: https://pluginprobe.com/plugins/double-opt-in/5.1.6/code/src/Addon
- Release archive: https://downloads.wordpress.org/plugin/double-opt-in.5.1.6.zip

- file [AddonCatalog.php](https://pluginprobe.com/plugins/double-opt-in/5.1.6/code/src/Addon/AddonCatalog.php)
- file [AddonFeatureToggle.php](https://pluginprobe.com/plugins/double-opt-in/5.1.6/code/src/Addon/AddonFeatureToggle.php)
- file [AddonInterface.php](https://pluginprobe.com/plugins/double-opt-in/5.1.6/code/src/Addon/AddonInterface.php)
- file [AddonRegistry.php](https://pluginprobe.com/plugins/double-opt-in/5.1.6/code/src/Addon/AddonRegistry.php)

Append `?format=md` to any of these, or send `Accept: text/markdown`, to read them as
Markdown. Add `/raw/` in place of `/code/` for the file with no wrapper at all.