There is only one file type that uses the .NNT extension:
Eudora Address Book File

- Developer QUALCOMM
-
Popularity
- Category Database Files
- Format N/A
Address book created and used by Eudora, an email client; stores contacts, such as names, nicknames, and email addresses.
NNT files, along with .TOC files, are located in the "EUDORA" directory.
NOTE: Eudora is no longer actively developed.
nndbase.nnt - Default name of the address book given by Eudora.
Software's name | License | Platforms |
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Free | ![]() ![]() |
Updated: December 23, 2014