diff --git a/server/data/carfax.js b/server/data/carfax.js
index c1db22193..b0792813d 100644
--- a/server/data/carfax.js
+++ b/server/data/carfax.js
@@ -169,7 +169,10 @@ async function processShopData(shopsToProcess, start, end, skipUpload, ignoreDat
       }
 
       await sendMexicoBillingEmail({
-        subject: `${shopid.toUpperCase()}_Mexico_${moment().format("MM-DD-YY")} ROs ${jsonObj.count} Error ${errorCode(jsonObj)}`,
+        subject: `${shopid.toUpperCase()}_Mexico${InstanceManager({
+          imex: "IO",
+          rome: "RO"
+        })}_${moment().format("MMDDYYYY")} ROs ${jsonObj.count} Error ${errorCode(jsonObj)}`,
         text: `Errors:\n${JSON.stringify(
           erroredJobs.map((ej) => ({
             ro_number: ej.job?.ro_number,