Once your accounts are connected, you can design emails in Beefree and then push them over to the ESP. There's just one catch: Each of your Campaign Monitor templates needs to include a certain unsubscribe syntax that's required by Campaign Monitor.
To add this syntax in the Beefree builder, select the section in your email where you'd like to include an unsubscribe link. Add a text block and click "Merge Tags." In the list of tags that pops up, you'll see one that says "Unsubscribe: Campaign Monitor." Click on that tag and it will be inserted into your email.
Once you've added that syntax and finished editing the rest of your template, save the email and click "Export." Choose the option "Push to a sending system" and then "Campaign Monitor," and your email will automatically be sent over to your Campaign Monitor account.
Campaign Monitor's capabilities with Beefree's makes the perfect pair for all of your email marketing needs.