1. Log into your MyGuestlist account
2. Click on the Email Tab
3. Click on 'Manage Campaign Templates'
4. Click 'Create New Template'
5. Enter a name for your Template
6. Select 'Import a HTML Template'
7. Click on the 'Zip file' tab
8. Click Browse
Search for the file on your computer and upload it. Once it's done you'll have the option to Open the Editor or continue on sending the campaign.
We always recommend you open the editor (simple mode) and send yourself a test in as many email clients as possible to make sure the email is displaying as intended.