Phone:
1-888-434-0055
Hours of operation:
Monday – Friday, 6 a.m. – 6 p.m. Pacific Time
Email:
https://stamps.custhelp.com/app/ask
Mail:
Stamps.com
1990 E. Grand Ave
El Segundo, CA 90245-5013
Follow Stamps.com
Facebook:
http://www.facebook.com/Stamps.com
Twitter:
http://twitter.com/stampscom
Youtube:
http://www.youtube.com/user/StampscomVideo