WordPress Membership Plugin
I can confirm that the email does not exists because I created a new email account just to test this case.
[2025/06/20 15:22:46] – SUCCESS: Creating new swpm user. Account status: activation_required, Membership Level ID: 2
[2025/06/20 15:22:47] – FAILURE: swpm_handle_wp_user_registration() – SWPM member account with this username already exists! No new account will be created for this user.
[2025/06/20 15:22:47] – SUCCESS: Completed the profile_update hook handling – SWPM user profile (Member ID: 170) updated with the latest WP user data.
[2025/06/20 15:22:48] – SUCCESS: Member registration complete email sent to: test@domain.fr. From email address value used: info@main-domain.fr