I am using apple mail app with protonmail-I have the bridge app. ([MacOS and Windows install here](https://protonmail.com/bridge/); [linux here](https://aur.archlinux.org/packages/protonmail-bridge/).)

After activating the bridge app, I tried to send an email with python by using smtp library and it does not work. Here is the code which I tried to run and failed me:

```
import smtplib

server = smtplib.SMTP("127.0.0.1", portnumber)
server.login("mymail@protonmail.com", "my password")
server.sendmail(
    "mymail@protonmail.com",
    "receiver@protonmail.com",
    "hello")
server.quit()

```

The error message I receive:

smtplib.SMTPDataError: (554, b'Error: transaction failed, blame it on the weather: malformed MIME header line: 00')