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How to Import a Custom HTML Email Template into Constant Contact

2026-03-054 min read

Why go custom in Constant Contact?

Constant Contact makes it easy to send emails with their built-in layouts, but those layouts are shared by thousands of other businesses. A custom HTML template lets your emails look like an extension of your website instead of a cookie-cutter newsletter.

SiteToSend gives you a Constant Contact-ready HTML file. Here's the setup process.

Step 1: Download your template

On your SiteToSend dashboard, find your order and click the Constant Contact download button. This gives you an HTML file optimized for Constant Contact's email system.

Step 2: Start a new campaign

Log into Constant Contact and click Create in the top navigation, then choose Email. When prompted to choose a template, look for the Custom Code option. It's usually at the bottom of the template selection screen or under "More templates."

Step 3: Paste your code

Open the downloaded file, select all the HTML, and paste it into the code editor. Constant Contact will render a preview so you can see how it looks.

Step 4: Edit your content

Replace the placeholder content with your actual campaign material:

  • Swap in your real images (you can upload them to Constant Contact's image library)
  • Update text, headlines, and calls to action
  • Set your button links to the right destinations
  • The footer section already accounts for Constant Contact's required unsubscribe link

Step 5: Test before sending

Use Constant Contact's Preview & Test feature to send a test to your own inbox. Check it on your phone too, since a lot of your subscribers will be reading on mobile.

Good to know

  • Custom code is available on all paid plans. You don't need a premium tier for this.
  • Image library: Constant Contact hosts your images for you. Upload them through the image manager and grab the hosted URLs to use in your template.
  • Contact merge fields: You can add personalization like the recipient's first name using Constant Contact's merge tags. Your template has spots where these can be dropped in naturally.
  • Reusable campaigns: Save your email as a template so you can duplicate it for future sends. Just swap the content and you're good to go.