A daily updated filename extension database!

SMTP file extension

The table below provides useful information about the .smtp file extension. It answers questions such as:

  • What is the .smtp file?
  • What program do I need to open a .smtp file?
  • How can the .smtp file be opened, edited or printed?
  • How can I convert .smtp files to another format?

Table of Contents

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

✅ Pegasus Mail SMTP Session Log

Pegasus Mail SMTP Session Log .smtp file icon
The SMTP file is a Pegasus Mail SMTP Session Log. Pegasus Mail is a previously freeware, proprietary, email client that is developed and maintained by David Harris.
SMTP format description not yet available
Category: Data files
Application: Pegasus Mail
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
SMTP aliases:
SMTP related links:
SMTP related extensions:
Pegasus Mail Draft Message

Pegasus Mail Saved Message

Pegasus Mail Outgoing Draft Message

Pegasus Mail Outgoing Final Message

Pegasus Mail Folder Data

Pegasus Mail Folder Index

Pegasus Mail Folder State

Pegasus Mail UID Information

Pegasus Mail Temporary Data

Pegasus Mail Stored Searches Data

Other types of files may also use the .smtp file extension.

🚫 The .smtp file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

cmtp, emtp, mtp, smp, smt, stmp, stp

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

Dart Pro 98 System Settings Data
MadTracker Pattern
Autodesk Softimage Sampler Preset
IMail Server Mail Message
MotionTracking Statistic Filters and Masking Parameters Data
Xionics SMP Image
HTML Help Stop Words
Pro/ENGINEER Rendering Data
WeintekHMI EasyBuilder 8000 Project
SLIM‐DataManager Workbook

🔴 Can't open a .smtp file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .smtp file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .smtp file extension, write to us!

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