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Asked: 2026-06-15T10:43:04+00:00

When im doing my lab project (pop3 mail client) im find something mystery in

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When im doing my lab project (“pop3 mail client”) im find something mystery in server answer- messages duplicates two times, for example:

S: Subject: Test 1
S: From: *** *** <***@gmail.com>
S: To: ***@mail.ru
S: Content-Type: multipart/alternative; boundary=***
S: X-Spam: Not detected
S: X-Mras: Ok
S: X-Mru-Authenticated-Sender: ***@gmail.com
S: 
S: --04***********************49
S: Content-Type: text/plain; charset=ISO-8859-1
S: 
S: Hello
S: 
S: --04***********************49
S: Content-Type: text/html; charset=ISO-8859-1
S: 
S: Hello
S: 
S: --047d7b10c7979b168d04d00bd749--
S: 
S: .

Is this normal?
Thank you very much.

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1 Answer

  1. Editorial Team

    This is normal. Note the message’s type: multipart/alternative.

    The multipart/alternative MIME type contains multiple bodies, each of which is typically the message body in some other format. In this case, the sender’s mail client included both HTML and plain text versions of the message body. The receiver would select the most appropriate format and display that version of the message.

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