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.DET File Extension

File TypeSage ACT! 5 Email Message

2.7 (6 Votes)
CategoryData Files

What is a DET file?

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

More Information

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.

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Updated 7/9/2015

About DET Files

Our goal is to help you understand what a file with a *.det suffix is and how to open it.

The Sage ACT! 5 Email Message file type, file format description, and Windows programs listed on this page have been individually researched and verified by the FileInfo team. We strive for 100% accuracy and only publish information about file formats that we have tested and validated.

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