Bugs when sending emails as text

[Icarus]

The email system in Presta is truly a nightmare.

As I posted in another thread, the HTML mails are coming with no newline, and with a very old fashioned format.
So I figured, I would switch to text:

These are the problems:

1. A logo is attached (as an attachment)
2. The text is poorly formatted - with spaces or tabs on the first portion (You have received a message from...)
3. The Powered by Prestashop link is coming with some weird character at the end.

Normally, I would just go in and change stuff but there are hundreds of lines of code dealing with this email sending process.

EDIT:
The text format is something that can be fixed in the mails folder - in all the txt files.
The weird character at the end is a ™ sign that is not interpreted in text emails.

So, the only issue left is why the logo is attached to text emails - I wish to get rid of it.