BUG: No Change To Contact When User Is Deleted

[tictag]

As at MailChimp Integration Add On v2.1.2

When a membership expires or is otherwise cancelled, the contact is archived on MailChimp (assuming Non-member Users has no audience selected and Unsubscribe on Level Change? has a 'Yes' option selected), however, when the user is deleted, nothing happens on MailChimp.

I would expect membership cancellation, expiry and/or user deletion to all have the same effect on MailChimp*, the effect being that they are no longer subscribed to the audience so do not receive email sent to that audience.

*Currently this is to archive the contact but I personally believe that the contact's Marketing Status should simply be changed to 'Nonsubscribed' per #43

[dparker1005]

If this is not already implemented, it can probably be done with the following lines:

• add_action('delete_user', 'pmpromc_process_audience_member_updates_queue', 11);
• add_action('wpmu_delete_user', 'pmpromc_process_audience_member_updates_queue', 11);

Those would both be run after PMPro removes the user's membership level here:
https://github.com/strangerstudios/paid-memberships-pro/blob/4286d876b3aa5a24dbc314fbd0e84701b5c3852f/includes/cleanup.php#L6-L22

Note that this approach would not "batch unsubscribe" users and would instead send a separate API call for each user to unsubscribe.

[dparker1005]

I have just performed the following test:

1. Check out for new user with PMPro, adding them to the level audience in Mailchimp
2. Verify that user is added in Mailchimp with correct merge fields
3. Delete user from WP site
4. Verify that user is set to "Unsubscribed" status in Mailchimp and default PMProMC merge fields are cleared.

It seems like this issue has been addressed in a previous update, but if I am missing something please let me know. I will keep this issue open for a bit just in case. For the same reason, I am also removing this from the v2.3.2 milestone as this will not likely be addressed in the next release.