When editing your email > Campaign settings > check "Replace email content with my own HTML template". In this case, note that:
- You will have to use web hosted links for your images.
- You will have to include, directly in the HTML code, the nominative tags of your participants to personalize the campaign.
- For more information on tags, read our article on the subject
We strongly recommend you test your campaigns using the "Send Test" button (in the editing zone of your campaign) before you send the campaign to your contacts.