This tool has a lot of limitations in creating campaigns. You can not save the email on draft, no options for sending test emails. Limited analytics and so on.
Recently I created a test campaign to check how the email looks, I was configuring the campaign for immediate schedule and after a few hours still, emails didn't arrive on my account but all are marked as sent in the Murlist dashboard. I leave a message to the support but no feedback yet. So frustrating!!