Send email using Cloudflare Custom Domain

To send emails using a custom domain managed on Cloudflare, follow these steps:

1. Choose an Email Sending Service

I used Mailjet because it's a performant French solution, it was super easy to set-up.

• Mailjet (France) 🇫🇷
• HQ: Paris, France
• Features:
  • SMTP relay & API
  • Transactional & marketing emails
  • Advanced analytics & A/B testing
• Pricing: Free tier (6,000 emails/month), paid plans start at ~€15/month
• Website: https://www.mailjet.com

2. Configure your Email Sending Service

• Create account
• Configure domain by creating a TXT DNS entry (see help)
• Configure SPF by creating a TXT DNS entry (see help)
• Configure DKIM by creating a TXT DNS entry (see help)
• Add an Sender Address from your dashboard
• Get Your API Keys from this page (see help)

3. Configure Django

Add the below in your settings.py file.

EMAIL_BACKEND = "django.core.mail.backends.smtp.EmailBackend"
EMAIL_HOST = "in-v3.mailjet.com"
EMAIL_PORT = 587
EMAIL_USE_TLS = True
EMAIL_HOST_USER = "your-mailjet-api-key"  # Replace with your API Key
EMAIL_HOST_PASSWORD = "your-mailjet-secret-key"  # Replace with your Secret Key
DEFAULT_FROM_EMAIL = "[email protected]"  # Use an email associated with your domain

You're ready to go!

4. Receive email to your custom domain

Has to be done in Cloudflare - Set-up domain - It will add several DNS entries: one of them is in conflict with the one used for SPF configuration - Accepts the changes: it will break the SPF configuration - Go to MailJet - Check the SPF configuration: it proposes a change, that adds the MailJet SPF on top of the Cloudflare - As in "v=spf1 include:spf.mailjet.com include:_spf.mx.cloudflare.net ~all" - Back in Cloudflare, Email Routing - Check Destination Adress: You should see your domain - In Cloudflare, Règles d'acheminement - Create a Custom Adress

You're done !