Where is the gms office located? GMS Headquarters. Physical Address: 3750 Timberlake Dr. Richfield, OH 44286. Mailing Address: PO Box 21933 Eagan, MN 55121How do i get in touch with a gms representative? Fill out our contact for or call us at 330-659-0100 to get in touch with a GMS representative today.What services does gms offer? Offering services through ground & air modes, the gamut of services provided by GMS covers expedited, time-sensitive delivery of documents/small parcels and also bulk parcel movements at economised pricing.What is google mobile services gms? Google Mobile Services (GMS) is a collection of Google applications and APIs that help support functionality across devices. These apps work together seamlessly to ensure your device provides a great user experience right out of the box.