You wrote:

i want to find that whether text in MIME mail is attachment or mail content.

As you've discovered, there's effectively no difference. A text attachment will usually have a filename suggested in the content-disposition, but not always. The "content" or mail body will typically be the first entity - but again, not always.

If you describe what you're trying to do more specifically, maybe we can suggest another way to do it.

In reply to Re: how to find text file in MIME mail is attachment or content of mail?? by McD
in thread how to find text file in MIME mail is attachment or content of mail?? by luckypower

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