how to send an email with quoted-printable transfer-encoding and utf-8 content-encoding?

python's email.mime tends to use encoding base64 or 7bit and us-ascii. I would like to use quoted-printable and utf-8.

Currently, my emails look like

--===============6135350048414329636==Content-Type: text/plainMIME-Version: 1.0Content-Transfer-Encoding: base64IyEvYmluL2Jhc2gKCmZvciBpIGluIHs4Mjg4Li44N

or, in some cases,

--===============0756888342500148236==MIME-Version: 1.0Content-Transfer-Encoding: 7bitfoobar

I would like the raw email to be easier for humans to read. I would also prefer utf-8 encoding.