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I have signed up for http://eudyptula-challenge.org/ challenge and this accepts email attachments only in simple text format. The files without extension (and also .zip file) are transferred with base64 encoding. I want to send email attachment in simple text. This is how my makefile is transferred :-

Content-Type: text/plain; charset=UTF-8;
 name="Makefile"
Content-Transfer-Encoding: base64
Content-Disposition: attachment;
 filename="Makefile"

b2JqLW0gKz0gaGVsbG8yLm8KCmFsbDoKCW1ha2UgLUMgL2xpYi9tb2R1bGVzLyQoc2hlbGwg
dW5hbWUgLXIpL2J1aWxkIE09JChQV0QpIG1vZHVsZXMKCmNsZWFuOgoJbWFrZSAtQyAvbGli
L21vZHVsZXMvJChzaGVsbCB1bmFtZSAtcikvYnVpbGQgTT0kKFBXRCkgY2xlYW4KCg==

How to configure Thunderbird to send a attachment files in as simple text?? Or I should any other email server or tool to send email attachments in simple text??

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  • It’s because the file is UTF-8-encoded text. E-Mails support only 7-bit ASCII as per specifications. Everything else has to be encoded somehow.
    – Daniel B
    Jun 8, 2014 at 21:08

2 Answers 2

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in thunder bird Edit-> preference -> Display -> font -> advanced -> out going mail set it from UTF-8 to Western iso 8859-1

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  • 2
    And to think we put up with unreadable email formatting still because back in the '80s when the MIME standard was cooked up, there were still systems that couldn't handle 8 bit text. Will we ever leave that behind?
    – mc0e
    Nov 25, 2014 at 14:27
  • 1
    Doesn't seem like it will help with attachments.
    – Tobu
    Dec 28, 2014 at 15:29
  • 3
    @Tobu Oddly enough, it works.
    – Cloud
    Mar 17, 2015 at 16:31
  • 1
    This works !! I'm amazed :D
    – b-ak
    Apr 2, 2016 at 20:19
  • Weird, but it does work.
    – sitilge
    Sep 18, 2017 at 19:09
1

On Ubuntu (19.10 eoan) Thunderbird go to

Edit -> Preferences -> Display -> Formatting tab -> Fonts & colors -> Advanced -> Text Encoding -> Outgoing Mail

and change UTF-8 to Western (ISO-8859-1).

Make sure to check when possible, use the default text encoding in replies checkbox. (Unless I did this, my attachments were still going in previous encoding).

Hope this helps!

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