.ZDB File Extension
File Type 1Zimbra Database File
What is a ZDB file?
Email data file created by Zimbra Connector for Microsoft Outlook (ZCO), a plug-in for Outlook used to manage Zimbra email accounts; saved in the Outlook .PST format but uses the ".zdb" extension instead; can be imported into an Outlook profile by first renaming the file extension to ".pst."
ZDB files are named zimbra.zdb by default.
File Type 2Quicken Online File
.ZDB File Association 2
Older file type used to store Quicken financial data.
File Type 3EPSQ Database
.ZDB File Association 3
Encrypted file format used by the U.S. military and Department of Defense for Electronic Personal Security Questionnaire (EPSQ) documents; most often used for the Standard Form (SF) 86 Questionnaire, which is used by military personnel, government employees, and government contractors to apply for a Security Clearance.