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POHow to distinguish sender-generated carriage returns from word wrap auto-generated carriage returns in email body?
 

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  1. POHow to distinguish sender-generated carriage returns from word wrap auto-generated carriage returns in email body?
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    <p>How can I distinguish sender-generated carriage returns from word wrap auto-generated carriage returns in an email body? I'm using Python imaplib to access Gmail and download message bodies like so:</p> <pre><code>user='whoever@gmail.com' pwd='password' m = imaplib.IMAP4_SSL("imap.gmail.com") m.login(user,pwd) m.select("INBOX") resp, items = m.search(None, "ALL") items = items[0].split() messages = [] for emailid in items: resp, data = m.fetch(emailid, "(RFC822)") email_body = data[0][1] mail = email.message_from_string(email_body) for part in mail.walk(): if part.get_content_type() == 'text/plain': body = part.get_payload(decode=1) messages.append(body) </code></pre> <p>I'm focusing on the case of messages received from another Gmail user. The message body text has a number of carriage returns ('\r\n') in it. These fall into two classes: 1) those inserted by the sender of the email, the "true" returns, 2) those created by Gmail word wrapping at ~78 characters, the "false" returns. I want to remove the second class of carriage returns only. I'm sure I could come up with a programmatic approximation that searches for the '\r\n' at a window around every 78th character but that wouldn't be bulletproof and isn't what I want. Interestingly, I notice that when the message displays in Gmail in the web browser, there are not returns for the second class of carriage returns. Gmail somehow knows to remove/not display these specifically. How? Is there some special encoding I'm missing?</p>
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