"No SSL support included in this python" Anaconda-python3-smtplib

Please provide the output from conda list and conda info. We have a thread going on GitHub.

In the meantime, you can try downgrading to the previous build with conda install python=3.7.1=h33f27b4_4.

A simple fix is to open Anaconda Prompt in admin mode and run your commands there. It works without any hassle.