add improvMX for email

domains/farhankhan.json

@@ -4,6 +4,11 @@
         "email": "faru947@gmail.com"
     },
     "records": {
-        "CNAME": "cname.vercel-dns.com"
+        "CNAME": "cname.vercel-dns.com",
+        "MX": [
+            { "target": "mx1.improvmx.com", "priority": 10 },
+            { "target": "mx2.improvmx.com", "priority": 20 }
+        ],
+        "TXT": "v=spf1 include:spf.improvmx.com ~all"
     }
 }