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  1. CMS
  2. Services to Agencies
  3. Mail & Messenger
  4. Interagency Mail Service

Interagency Mail Service 

 

Procedures for State of Illinois Interagency Mail Service

  • Interagency mail should be addressed as legibly and accurately as U.S. mail. Give the recipient's first and last name and the complete department name and location. Always include a complete return address.
  • Separate outgoing mail into two stacks: interagency mail and U.S. Postal Service mail.
  • Interagency mail is only delivered to the Springfield and metro Chicago area offices listed in this service guide.
  • Interagency mail picked up in Springfield and Chicago destined for the same city will be delivered on the same or following day.
  • Interagency mail picked up in Springfield and Chicago destined for the other city will be delivered on the following day. Interagency mail destined for the other city may also be dropped off at a CMS mail center prior to 5 p.m. for next day delivery.
  • Contact the CMS Springfield or Chicago office to track interagency mail that has already been sent or to arrange for a large pickup.
  • Contact your agency mailroom authority if you wish to expand or change your interagency mail service.

Contact Information

Mail and Messenger Services
200 E. Ash St.
Springfield, Illinois, 62704-4769
Phone: (217) 782-7685

Mail and Messenger Services
James R. Thompson Center, C100
100 W. Randolph St.
Chicago, IL 60601-2613
Phone: (312) 814-2196