mail: migrate to modern email.message instead of using old compat32 functionality Before, the HTML part could be detected as pure 7-bit and sent as: Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: 7bit Now, it will use: Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable That should work fine too.

[tox]
minversion = 1.8
envlist = py27-pytest

[testenv]
setenv =
    PYTHONHASHSEED = 0
deps =
    -r{toxinidir}/dev_requirements.txt
    python-ldap
    python-pam
commands =
    pytest: py.test {posargs}