File Extension Library

.DET File Extension

  • Developer by: Sage
  • Category: Data Files

What are .DET files and how to open them?

Can't open .DET file? Are you wondering what it contains? On our site we will explain to you what this file is, what it is used for and what software opens the .DET file.

What is a .DET file extension?

.DET file extension is created by Sage. .DET has been classified as Data Files.

.DET is Sage ACT! 5 Email Message

Proprietary email message format used by ACT!, a contact management program; contains a single email message without any attachments.

If an ACT! email contains one or more attachments, each attached file is saved as a separate DET file. The email message includes pointers to each associated DET file, which can be accessed by opening the original message. For instance, if an email contains three attachments, it would be saved as four DET files - one for the message and three for the attachments.

NOTE: The DET format was used in ACT 5.0 to 6.0.2. ACT 6.0.3 and later saves email messages in the .IMA format. Sage ACT! became Swiftpage Act! in 2013.

List of all softwares that can open the Sage ACT! 5 Email Message
Swiftpage Act!

How to fix problems with .DET files

  1. You need to update the application that you normally use to open .DET files. Only the latest version of the software supports the current .DET file format
  2. You need to check the .DET file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)