Klaviyo: Email Marketing & SMS

I love that the app is easy to use for beginners and how it's versatile. However, it took me a long time for me to finally get help from the support for the error that kept happening on my free plan. I couldn't get through the sales (phone and email) and support service because my free 60-day support access had ended. Although I had installed it more than 60 days prior, I only started using the actual app from 2 weeks ago. Ended up speaking with Shopify support to have them contact me.