Follow the guide bellow to send custom welcome email to new user:
How to Send A Custom Welcome Email to New Users in WordPress on wpbeginner
twentyseventeen domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /var/www/dotorg/wps/docs/wp-includes/functions.php on line 6121Follow the guide bellow to send custom welcome email to new user:
How to Send A Custom Welcome Email to New Users in WordPress on wpbeginner