1/ Regarding the duplicated notifications, did you send an email
from "<a href="mailto:joshua90@gmail.com" title="mailto:joshua90@gmail.com">joshua90@gmail.com</a>" to "<a href="mailto:joshua@drntric.com" title="mailto:joshua@drntric.com">joshua@drntric.com</a>"?  Since we're
syncing those two accounts, you should be receiving webhooks for
both of them.

<a href="mailto:mailbox+tag@hostanme.com" title="mailto:mailbox+tag@hostanme.com">mailbox+tag@hostanme.com</a>

<a href="mailto:Miles.O'Brian@example.com" title="mailto:Miles.O'Brian@example.com">Miles.O'Brian@example.com</a>

<a href="mailto:785ee39055efcd86359b6e05a9bef0e7@example.com" title="mailto:785ee39055efcd86359b6e05a9bef0e7@example.com">785ee39055efcd86359b6e05a9bef0e7@example.com</a>