File Extension DET

.DET File

File extension: DET
File type: Saved E-mail File
Do you have DET - related issues?
First check your registry for hidden errors.


Notes about the DET file extension:



Errors in your registry are one of the common causes for incorrect file associations on your windows system. It is highly recommended that you check your registry for file association errors (will also check for any other registry errors).

The DET file type is primarily associated with 'ACT!' by Best Software CRM Division. Sometimes associated with .UNQ saved unknown attachment. Windows ver 6, 5, 4, 3. Popular contact management software.

Detailed information for file extension DET:


Primary association: ACT!
Company: Best Software CRM Division

Other applications associated with file type DET:

  • Dart File
  • StageII Detector Properties File (FITS Format) The Mime types used with this association are: image/x-fits.



Important: When encountering any file extension issues it is always recommended that you run a free scan for Windows registry errors.

Technical data

To view technical data on file-extension DET click this link to expand/hide the additional area.

System Info for File Extension .DET

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and information FILExt collected directly from user systems.

ProgramID: DETFile, FileType: Office Data File

ProgramID: DETFile
EXEFile: %ProgramFiles%\ACT\ActEmail.exe %1

ProgramID: ACT!.Email
EXEFile: %ProgramFiles%\act\act.exe

ProgramID: DrEngrave.Template
EXEFile: %ProgramFiles%\DRF35D~1.ENG\Program\DRENGR~1.EXE


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Did you know

Everytime you install & uninstall software and modify system components your Windows registry is left fragmented with obsolete, corrupted and harmful files.

We recommend you run a free registry scan to identify the issues causing problems on your PC:


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