Create the bounce method

[waldoj]

• [x] have it require BOUNCE_API_KEY
• [x] store the JSON representation of all incoming applications, appending the Mailgun ID to the record
• [x] include the AB ID as an X- header when sending an email
• [x] upon a bounce, modify registrars.json to mark that registrar's email address as undeliverable
• [x] modify the email function in submit.inc.php to check to make sure that an email address isn't undeliverable
• [x] identify the SBE email address to which absentee ballot applications may be submitted
• [x] use the AB ID (found in the X-AB-ID header) to identify the application in question
• [x] resubmit the application, this time to info@elections.virginia.gov

[waldoj]

JSON and Mailgun ID stored with 041be1e0fc38214d67552f24f4d05bf494a4d73c.

[waldoj]

I've submitted a request for guidance to info@elections.virginia.gov, regarding to what email address absentee ballot requests should be submitted in the absence of a functioning registrar email address.

[waldoj]

In fact, it should sent to info@elections.virginia.gov. So that was easy.

[waldoj]

I think maybe I can abuse tagging to include AB IDs in the message. I just need to verify that the tags are exposed by the bounce webhook.

[waldoj]

Yes, tags are included. Bingo.

[waldoj]

On second thought, this appears to be the preferred method of attaching data to messages. I just need to figure out if this is exposed via sendMessage().

[waldoj]

Ah-ha: there is a limit to the number of tags that can be used per account. OK, so it's essential that IDs be passed via X- headers. And that's better, anyway, for MTA agnosticism.

[waldoj]

I decided to use a customer X-AB-ID header instead of using Mailgun's custom, JSON-encoded header. That will simplify portability.