Plain text email source code only contains a long meaningless string as its contents, but can be displayed in thunderbird in meaningful texts

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I've received such a few such emails from one single person recently: Thunderbird and the web mail displays normal texts (real contents of the email), but when I click the "view source code" button, only a long string is there in the content part (no obvious real contents!), after the email headers. The style of the long string is similar to a PGP key in ASCII, but no PGP is used in the emails. The sender's mail agent is Outlook.

What is happening here? Is there a special format used here?

xuhdev

Posted 2016-03-07T08:55:47.413

Reputation: 1 399

Do you use any OpenPGP product? It looks like the message might have been encrypted to you. Please post the email payload (the part after the email headers) with a small excerpt of the contents. – dr01 – 2016-03-07T09:00:43.467

@dr01 I've added a snippet. I use GPG locally, but I'm not using it on the Webmail, which can also display the contents. – xuhdev – 2016-03-07T09:37:56.257

@dr01 I removed the contents; I saw it's base64 encoding. Thanks! – xuhdev – 2016-03-07T09:43:38.367

Answers

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The email is encoded using base64:

 Content-Transfer-Encoding: base64

xuhdev

Posted 2016-03-07T08:55:47.413

Reputation: 1 399