Description
Triggered when an email from Gravity Forms fails to be passed to SendGrid.
Usage
add_action( 'gform_sendgrid_send_email_failed', 'my_function', 10, 6 );
Parameters
Since
This action hook was added in SendGrid version 1.4.
Source Code
This action hook is located in GF_SendGrid::maybe_send_email() in gravityformssendgrid/class-gf-sendgrid.php.