.LETTER File Extension

.LETTER File Extension

File Type

Undeliverable Mail File

Developer N/A
Popularity
2.3  |  6 Votes
Category Misc Files
Format N/A

What is a LETTER file?

File named dead.letter that is sometimes created on Unix-based systems when email cannot be sent; may be created because the destination address is wrong or because the recipient refuses to accept the email.

More Information

The dead.letter files can be deleted safely. However, if there are further problems sending mail, then the file may be recreated. Therefore, you may have to investigate further to locate why the mail is not being sent.

NOTE: The dead.letter file can be created by the Unix sendmail program. Also, it is sometimes created when invoking the sendmail program with the PHP mail() function.

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Programs that open LETTER files

Windows
Mac
Linux
Updated February 13, 2012

Verified by FileInfo.com

The FileInfo.com team has independently researched the Undeliverable Mail file format and Mac, Windows, and Linux apps listed on this page. Our goal is 100% accuracy and we only publish information about file types that we have verified.

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