Headquarters
Authentidate Holding Corp.
Connell Corporate Center
300 Connell Drive, Fifth Floor
Berkeley Heights, N.J. 07922 USA
Phone: +1-908-787-1700
Fax: +1-908-673-9920

To contact Authentidate® click here.

Authentidate Customer Support
Phone: +1-877-467-2792
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To view or download directions to Authentidate headquarters click here.




Germany Office
Rethelstraße 47
40237 Düsseldorf GERMANY
Phone: +49 211-43 69 89 0
Fax: +49 211-43 69 89 19

To view or download directions to our Germany Office click here.

Inscrybe® Healthcare
Healthcare Sales and Customer Support
Phone: +1-877-467-2792 OR +1-877-INSCRYBE
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Inscrybe® Office
Customer Support
Phone: +1-800-870-5348 (8:30 AM - 6 PM ET weekdays)
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Authentidate's Electronic Postmark Service
Customer Support for EPM® Service
Phone: +1-800-870-5348 (8:30 AM - 6 PM ET weekdays)
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United States Postal Service®
Attn: USPS EPM Program Manager
475 L'Enfant Plaza, SW Suite 3300
Washington, DC 20260

Investor Relations
Authentidate Holding Corporation is a public company listed in the United States on NASDAQ as: ADAT

To email Investor Relations click here.

KCSA Worldwide (Investor Relations Firm)

Todd Fromer
Phone: +1-212-896-1215
Fax: +1-212-896-1233
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Garth Russell
Phone: +1-212-896-1250
Fax: +1-212-697-0910
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