added test variable when sending an e-mail

email-worker/src/lib/mailgunService.ts

@@ -1,6 +1,7 @@
 import formData from 'form-data';
 import Mailgun from 'mailgun.js';
 import { createLogger } from './logger';
+import { MailgunMessageData } from 'mailgun.js/Types';
 
 const log = createLogger("email:mailgun");
 
@@ -46,12 +47,14 @@ export async function sendEmail(message: EmailMessage): Promise<boolean> {
         const client = getMailgunClient();
         const domain = process.env.MAILGUN_DOMAIN || 'rezije.app';
 
-        const messageData = {
+        const messageData:MailgunMessageData = {
             from: 'rezije.app <noreply@rezije.app>',
             to: message.to,
             subject: message.subject,
-            html: message.html
-        };
+            html: message.html,
+            "v:locationID": "12345" // testing custom variable - webhook should pick this up
+         } as MailgunMessageData;
+
 
         log(`Sending email to ${message.to}: ${message.subject}`);