Outlook Autocomplete Email Extraction

Extracting Autocomplete Email Addresses Stored in Outlook for General Use

Abstract: Learn how to extract autocomplete email addresses stored in Outlook for general use, even if you don't use the contacts feature.

Created: 2024-03-28 by

Extracting Autocomplete Email Addresses Stored in Outlook: A Comprehensive Guide

Microsoft Outlook is a popular email client that offers various features for managing contacts and email addresses. One such feature is the autocomplete list, which stores frequently used email addresses to help users quickly select recipients when composing new emails. However, many people do not use Outlook's contacts features and instead rely solely on the autocomplete list.

Understanding the Autocomplete List

The autocomplete list in Outlook is a collection of email addresses that the user has previously entered in the "To," "Cc," or "Bcc" fields of emails. When the user starts typing an email address in a new email, Outlook displays a dropdown list of suggested email addresses based on the characters entered. This list is stored in a file called "StreamAutocomplete.dat" located in the user's profile folder.

Extracting Email Addresses from the Autocomplete List

Extracting email addresses from the autocomplete list in Outlook can be useful for a variety of purposes, such as creating a backup of email contacts or migrating to a different email client. The following steps outline how to extract email addresses from the autocomplete list:

  1. Close Outlook to ensure that the StreamAutocomplete.dat file is not locked.
  2. Navigate to the user's profile folder. This can be found by typing "%appdata%\Microsoft\Outlook" in the Windows File Explorer address bar.
  3. Locate the StreamAutocomplete.dat file and make a backup copy.
  4. Open the StreamAutocomplete.dat file in a text editor such as Notepad or a hex editor.
  5. Locate the email addresses in the file. In a text editor, email addresses will be separated by the "00 0D 0A" hexadecimal sequence, which represents a new line. In a hex editor, email addresses will be preceded by the "3C 3E" and followed by the "3C 2F 73 65 74 75 6D 2F" hexadecimal sequences, which represent the opening and closing tags for an XML element.
  6. Extract the email addresses and save them to a text file or spreadsheet.

Formatting Email Addresses

When extracting email addresses from the autocomplete list, it is important to ensure that they are properly formatted for use in other applications. The following code block shows an example of how to format extracted email addresses using Python:

# Extract email addresses from StreamAutocomplete.dat file with open("StreamAutocomplete.dat", "r") as f: content = f.read() # Split content into lines lines = content.split(" ") # Initialize list to store email addresses email\_addresses = [] # Iterate through lines for line in lines: # Check if line contains email address if "SMTP:" in line: # Extract email address email\_address = line.split(":")[1].strip() # Add email address to list email\_addresses.append(email\_address)

References

Note: This article is intended for informational purposes only and should not be used for any illegal or unauthorized purposes. Extracting email addresses from the autocomplete list may be a violation of privacy laws or regulations in certain jurisdictions. Always obtain proper authorization before accessing or using any personal data.

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