Flask-Mail setup - Mini Project: Build & Apply

Flask-Mail setup

📖 Scenario: You are building a simple Flask web app that needs to send emails. To do this, you will set up Flask-Mail, a helpful extension that makes sending emails easy.

🎯 Goal: Set up Flask-Mail in a Flask app by creating the app, configuring mail settings, initializing Flask-Mail, and preparing the app to send emails.

📋 What You'll Learn

Create a Flask app instance named app

Add mail configuration variables with exact names and values

Initialize Flask-Mail with the Flask app

Add a route /send-mail that returns a simple string confirming setup

💡 Why This Matters

🌍 Real World

Many web apps need to send emails for notifications, password resets, or confirmations. Flask-Mail makes this easy to add.

💼 Career

Understanding how to configure and use Flask-Mail is useful for backend web developers working with Flask to build real-world applications.

1

Create Flask app instance

Write code to import Flask from flask and create a Flask app instance called app.

Flask

from flask import Flask

# Create Flask app instance called app
# Your code here

Need a hint?

Use Flask(__name__) to create the app instance.

2

Add mail configuration variables

Add these mail configuration variables to app.config: MAIL_SERVER set to 'smtp.example.com', MAIL_PORT set to 587, MAIL_USE_TLS set to True, MAIL_USERNAME set to '[e-mail]', and MAIL_PASSWORD set to 'securepassword'.

Flask

from flask import Flask

app = Flask(__name__)

# Add mail configuration variables to app.config
# Your code here

Need a hint?

Use app.config['KEY'] = value to add each setting.

3

Initialize Flask-Mail

Import Mail from flask_mail and create a Mail instance called mail. Initialize it with the Flask app app.

Flask

from flask import Flask
from flask_mail import Mail

app = Flask(__name__)

app.config['MAIL_SERVER'] = 'smtp.example.com'
app.config['MAIL_PORT'] = 587
app.config['MAIL_USE_TLS'] = True
app.config['MAIL_USERNAME'] = '[e-mail]'
app.config['MAIL_PASSWORD'] = 'securepassword'

# Create Mail instance called mail and initialize with app
# Your code here

Need a hint?

Use mail = Mail(app) to initialize Flask-Mail.

4

Add a route to confirm setup

Add a route /send-mail to the Flask app app that returns the string 'Mail setup complete' when accessed.

Flask

from flask import Flask
from flask_mail import Mail

app = Flask(__name__)

app.config['MAIL_SERVER'] = 'smtp.example.com'
app.config['MAIL_PORT'] = 587
app.config['MAIL_USE_TLS'] = True
app.config['MAIL_USERNAME'] = '[e-mail]'
app.config['MAIL_PASSWORD'] = 'securepassword'

mail = Mail(app)

# Add route /send-mail that returns 'Mail setup complete'
# Your code here

Need a hint?

Use @app.route('/send-mail') decorator and define a function that returns the string.