Thanks for your answer. We have multiple mailpoet lists with different mandatory fields in our subscription forms. We need to go throught Contact Form 7 since the mailpoet mandatory fields in their subscription forms are shared with all mailpoet forms (and we don’t want that).
Do you have any clue why our “Add-on Contact Form 7 – MailPoet 3” plugin doesn’t work on v.1.3.12, but works well with v.1.3.10? What could it be related to?
Thanks again for your help.