You can email them at:
Isaac: [email protected]
Taylor: [email protected]
Zac: [email protected]
You can write to them at:
Hanson
c/o Mercury Records
11150 Santa Monica Blvd
#1000
Los Angeles, CA 90025
HITZ List
P.O. Box 703136
Tulsa, OK 74170
Hanson
c/o Mercury Records
825 Eighth Avenue
New York, NY 10019
Hanson
c/o Tribune Music Group
8322 Livington Way
Los Angeles, CA 90046
I do not guarantee that you will get replies from these addresses or that Hanson will actually read them.