Omnisend Email Marketing & SMS

I had an issue with the billing : i have added some subscribers (4500) to test the tool for a campaign and then i didn't deleted it. I was charged 60 usd / month for 3 months before realizing i didn't used the service i was paying for. The customer service helped me delete the old subscribers (that i no longer needed) and refunded me for the 3 months overpaid. The app is good for marketing automation.