New comment by Duncaen on mblaze repository

https://github.com/leahneukirchen/mblaze/issues/167#issuecomment-528306728

Comment:
The mail client should decode it, the rfc for mails only allows ascii.

```
$ echo "\n\naccents: à é" | mmime | mshow /dev/stdin

--- 1: multipart/mixed size=259 ---
--- --- 2: text/plain size=16 ---

accents: à é
```