Omnisend Email Marketing & SMS

I just want to send a simple email to my clients. I started the process, but it is VERY complicated. Beware that this is not a simple way to just send your clients an email. Damn you shopify!
DAY 2 - ugh I just want to send an email to my clients. ABSOLUTELY IMPOSSIBLE. I have been on shopify support 4 times, and they do their best, but without support from Soundest, they can't do anything. Soundest support is NON-EXISTENT - I've sent them about 25 messages. If you want to send emails to your client base, DO NOT USE THIS APP.