Integrating HTML Form Input into Mailgun Emails via Python

Other Questions Mailgun
1

Mailgun API email sending with Python works well but attaching HTML form data confuses me. How can I merge form input into the email payload?

from flask import Flask, request

app = Flask(__name__)

@app.route('/submit', methods=['POST'])
def process_email():
    user_data = request.form.get('user_entry')
    email_details = {
        'from': 'Sender <[email protected]>',
        'to': 'Recipient <[email protected]>',
        'subject': 'New Form Submission',
        'text': 'User data: ' + str(user_data)
    }
    # Invoke a custom email function with email_details
    dispatch_email(email_details)
    return 'Email sent successfully'
2

I found that the formatting of the email payload determines how the data is interpreted. For instance, mixing plain text and HTML in the same body can sometimes confuse the email client or the Mailgun API. It’s helpful to separate the content correctly by using a key like “html” for HTML content. In one of my projects, I was initially merging them into a single key, which led to formatting errors on the recipient’s end. Splitting them up ensured that HTML rendered correctly while still keeping the plain text available as a fallback. I also recommend testing across different email clients to ensure the output remains consistent regardless of the service used to view the messages.