How to change Content-Transfer-Encoding for email attachments?

email character-encoding thunderbird

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


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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