I'll describe what to look for in the email, how to determine the file type and file name that's encoded, and how to extract the encoded portion from the email.Īnd there's a PHP script you can use to do the decoding. Reasons for decoding range from inability to view the email in a regular reader to just plain curiosity. I'll describe how to decode the encoded sections of email content and attachments. The menu item you're looking for may be within another menu item such as "Reader" or "Other Actions." The email reader's help function is likely to have instructions. The menu item may be named "View Source," "View Raw Source," "View Full Headers," or something reminiscent of those. It's encoded with MIME Base64, a content transfer encoding scheme to convert binary data (like images) into plain text characters so they can be safely sent via email.Įmail readers generally allow viewing of the source code of individual emails through their menu system. It could be an encoded image in the email, an encoded attachment, or the entire email content may be encoded. When you look at the source code of an email, it sometimes contains blocks of what appears to be random alphanumeric characters.
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