2018.1

Note
The Mailgun tag allows you to view the stats per tag. Mailgun has a quick refresh and stats are
available almost instantly.
MailJet
Dashboard: https://app.mailjet.com/dashboard
Documentation: https://app.mailjet.com/docs/emails_headers
Sample Control Script to assign a campaign:
merge.context.sections["Content"].headers = {
"X-Mailjet-Campaign": "invoices"
};
Note
Mailjet strips out their own mailheaders like X-Mailjet-Campaign. The results can only be verified
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