Resubscribe to Mailchimp

[deezone]

See issue DoSomethingArchive/message-broker#37

When an email address is submitted to Mailchimp as a batch submission that is unsubscribed the address is rejected with the error:

error code: 212
ghettobear123@yahoo.com has unsubscribed, and cannot be resubscribed by you.
To prevent false spam complaints, they'll need to resubscribe of their own free will.

These email address will be resubscribed as the signup to a new campaign confirms subscription. Resubscriptions will be entries in the userMailchimpResubscribeQueue.

mbc-mailchimp-resubscribe.php will;

• consume the queue
• submit the email address to Mailchimp to resubscribe the address
• submit to the UserAPI the subscription status of the email address.

[deezone]

Adds related environment variables.
DoSomething/messagebroker-config#9

[jonuy]

@deezone Just a heads up, the mbc-mailchimp-status consumer can already work as it is for updating the subscription status of the email address. Doing the resubscribing in a separate consumer would seem to make sense here.

[deezone]

We'll chat in our checkin tomorrow but I think we're on the same page.