Last Updated on July 24, 2018 by Neil Murray
My experience is that the submission storage plugins are very robust and rarely fail to save a CF7 form submit.
They are not however always a good indication of CF7 sending emails. The green “Your message was sent successfully” message is a much clearer indicator that CF7 is sending the email.
The submission storage plugins appear to save a CF7 form submit even if the email is not sent due to a Javascript Conflict or unallowed From: email address.
This is partly why I think they are so often used by experienced WP users – they provide a robust record of all form submissions even when things go a little wrong.