Gussys Gut review for Klaviyo: Email Marketing & SMS

Klaviyo's data and integrations are better than all the other big email (ESPs) services by FAR. They're also easy to use which means you don't need a dev to do things and you can create a $20k email campaign in about 30 mins. And their deliverability is great. I've been happy for 3 yrs now. Started with them and wouldn't leave them.