from app import app
from flask_mail import Message
from app import mail
msg = Message('test subject', sender=app.config['ADMINS'][0], recipients=['your-email@example.com'])
msg.body = 'text body'
msg.html = '<h1>HTML body</h1>'

if __name__ == '__main__':
    mail.send(msg)

import os


class Config(object):
    SECRET_KEY = 'very-secret-key'
    SQLALCHEMY_DATABASE_URI = 'sqlite:///D:/Валера/Волонтерство/VFlask/login.db'
    SQLALCHEMY_TRACK_MODIFICATIONS = False

    MAIL_SERVER = os.environ.get('MAIL_SERVER')
    MAIL_PORT = int(os.environ.get('MAIL_PORT') or 25)
    MAIL_USE_TLS = os.environ.get('MAIL_USE_TLS') is not None
    MAIL_USERNAME = os.environ.get('MAIL_USERNAME')
    MAIL_PASSWORD = os.environ.get('MAIL_PASSWORD')
    ADMINS = ['valerypavlikov@yandex.ru']

D:ВалераВолонтерствоVFlaskvenvScriptspython.exe D:/Валера/Волонтерство/VFlask/VFlask.py
Traceback (most recent call last):
  File "D:ВалераВолонтерствоVFlaskvenvlibsite-packagesflask_mail.py", line 492, in send
    message.send(connection)
  File "D:ВалераВолонтерствоVFlaskvenvlibsite-packagesflask_mail.py", line 427, in send
    connection.send(self)
  File "D:ВалераВолонтерствоVFlaskvenvlibsite-packagesflask_mail.py", line 190, in send
    message.as_bytes() if PY3 else message.as_string(),
  File "D:ВалераВолонтерствоVFlaskvenvlibsite-packagesflask_mail.py", line 385, in as_bytes
    return self._message().as_bytes()
  File "D:ВалераВолонтерствоVFlaskvenvlibsite-packagesflask_mail.py", line 307, in _message
    ascii_attachments = current_app.extensions['mail'].ascii_attachments
  File "D:ВалераВолонтерствоVFlaskvenvlibsite-packageswerkzeuglocal.py", line 347, in __getattr__
    return getattr(self._get_current_object(), name)
  File "D:ВалераВолонтерствоVFlaskvenvlibsite-packageswerkzeuglocal.py", line 306, in _get_current_object
    return self.__local()
  File "D:ВалераВолонтерствоVFlaskvenvlibsite-packagesflaskglobals.py", line 51, in _find_app
    raise RuntimeError(_app_ctx_err_msg)
RuntimeError: Working outside of application context.

This typically means that you attempted to use functionality that needed
to interface with the current application object in a way.  To solve
this set up an application context with app.app_context().  See the
documentation for more information.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "D:/Валера/Волонтерство/VFlask/VFlask.py", line 17, in <module>
    mail.send(msg)
  File "D:ВалераВолонтерствоVFlaskvenvlibsite-packagesflask_mail.py", line 492, in send
    message.send(connection)
  File "D:ВалераВолонтерствоVFlaskvenvlibsite-packagesflask_mail.py", line 152, in __exit__
    self.host.quit()
  File "C:UsersAsusAppDataLocalProgramsPythonPython36-32Libsmtplib.py", line 983, in quit
    res = self.docmd("quit")
  File "C:UsersAsusAppDataLocalProgramsPythonPython36-32Libsmtplib.py", line 420, in docmd
    self.putcmd(cmd, args)
  File "C:UsersAsusAppDataLocalProgramsPythonPython36-32Libsmtplib.py", line 367, in putcmd
    self.send(str)
  File "C:UsersAsusAppDataLocalProgramsPythonPython36-32Libsmtplib.py", line 359, in send
    raise SMTPServerDisconnected('please run connect() first')
smtplib.SMTPServerDisconnected: please run connect() first

Process finished with exit code 1