Send Emails in Flask - Flask Tutorial by Mailtrap

In this Flask tutorial, we explain how to send emails in Flask. Learn how to send emails with Flask-Mail, how to customize different parameters, how to send emails in Flask asynchronously, how to send HTML emails, emails with attachments in Flask, and much more.
✅ Sending emails with Flask-Mail (0:07)
✅ Customizations (2:57)
✅ Adding attachments (3:42)
✅ Sending emails asynchronously (4:56)
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📝 For more information, visit Mailtrap Blog:
🔗 Sending emails in Flask: bit.ly/4394gl8
🔗 Sending emails in Python: bit.ly/3WHOLOz
⚙️ Mailtrap’s official Python client: pypi.org/proje...
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[@mailtrap.]

At Mailtrap, we strive to create high-quality content to educate the members of our community on email-related topics. This time, we covered how to send emails with Flask.
What programming languages or frameworks would you like us to cover next? Let us know in the comments.

[@russian_developer]

I couldn't send in production except for test emails only in a flask app.

[@beelorashed]

I got error , message not delivered it discarded as high spam , I don't know why , I have my own ssl domain with private mail

[@mailtrap.]

Thanks for watching and for your question.
A few common mistakes that may lead to error in this context:
- Lack of Email Authentication (Configure your SPF, DKIM, and DMARC)
- Improper SMTP Settings (Invalid or misconfigured settings (e.g., wrong port, incorrect SMTP server) can cause email services to treat the email as suspicious.)
Here's the code, try to use it again:
from flask import Flask
from flask_mail import Mail, Message
app = Flask(__name__)
# SMTP Server Configuration (for example, using Gmail's SMTP server)
app.config['MAIL_SERVER'] = 'smtp.gmail.com'
app.config['MAIL_PORT'] = 465
app.config['MAIL_USERNAME'] = '[e-mail]'
app.config['MAIL_PASSWORD'] = 'your-password'
app.config['MAIL_USE_TLS'] = False
app.config['MAIL_USE_SSL'] = True
mail = Mail(app)
@app.route("/send-email")
def send_email():
msg = Message("Hello from Flask",
sender="[e-mail]",
recipients=["[e-mail]"])
msg.body = "This is the plain text body"
msg.html = "This is the HTML body"
try:
mail.send(msg)
return "Email sent!"
except Exception as e:
return str(e)
if __name__ == "__main__":
app.run(debug=True)
Make sure the MAIL_USERNAME and MAIL_PASSWORD match your SMTP server credentials, and ensure you are adhering to the SMTP provider’s guidelines for email limits.
Good luck!

[@emerson.dvlmt.g]

I want to use flask to send an email from a html form, but there's no place in the web that explains how to do it

[@mailtrap.]

Wait for our next tutorial. It is coming!

[@Tan_cannon]

@@mailtrap. i just finished this video and waiting for the next tutorial u say. Is it out already??

[@russian_developer]

Mailtrap only used for testing, right?

[@mailtrap.]

Hello. Mailtrap is a fully developed email delivery platform. So you can use Mailtrap to send emails on production as well.

[@futhedude4848]

It's better if you provide the source code for this tutorial

[@mailtrap.]

Hello. Thank you for your attention. The source code and other tips you can find in our article on Mailtrap Blog:
mailtrap.io/blog/flask-email-sending/

[@ojochegbe_]

Thanks ❤ signing up gor mailtrap

[@mailtrap.]

Thank you! We appreciate your trust. Subscribe to our channel for all things email 📧📬

[@Jaysun13]

why do I need a domain? how do I get a domain?

[@mailtrap.]

Thank you for following our videos! You need a domain to be able to send emails.