Install Letterbox

Self-hosted email marketing for cPanel. This takes about a minute.

• ✅ PHP 8.0 or newer (you have 8.3.36)
• ✅ pdo_mysql extension
• ✅ curl extension
• ✅ mbstring extension
• ✅ openssl extension
• ✅ Folder is writable (to create config.php)
• ✅ media/ folder is writable (uploads)