Important Network Alert! Due to a system upgrade, if you are using LinkU mail services you will need to take action in order to maintain email services. Click here to learn more.

Contact LinkU

If you are a current client, you can find contact information for your account executive, or general support information here. LinkUSystems, Inc. strives to provide the best support and customer service to our clients and potential clients.

Office Phone: (888) 995-4658 Toll Free
Fax: (951) 848-9350
Office Hours: Monday - Friday: 8:00am - 5:00pm PT
Office Location: LinkUSystems, Inc.
7899 Mission Grove Parkway, Ste. E
Riverside, CA 92508
24/7 Emergency Support: (888) 583-6662
Please use in case of emergency only (i.e. to report an outage or other business disruption)

Our regular office will be closed on the following dates:

  • New Years Friday, January 1st, 2021
  • Memorial Day Monday, May 31st, 2021
  • Independence Day (Observed) Monday, July 5th, 2021
  • Labor Day Monday, September 6th, 2021
  • Thanksgiving Thursday & Friday, November 25th & 26th, 2021
  • Winter Holidays Thursday & Friday, December 23rd & 24th, 2021
  • New Years Eve Friday, December 31st, 2021