[jabart]

Because the marketing platform is terrible. Frequent need for a full page reload to fix a caching issue. Test emails don't support email template tags without a default value. Searching for an email address is terrible slow, the upload is glitchy. Email activity is also slow and limited, sometimes I don't even know if I hit enter because I have to wait so long with no UI indicators. The pricing is also horrible with no way to purge bounce or unsubscribed emails, so they just collect and drive up your "Contact Storage" fees. The recent Sender Authentication change created unreadable sub-domains until they started to offer an advanced option again.

Yes, I emailed support about a few issues but received the blanket "What browser are you using?" when I provided full details. So I built a marketing system on top of their API and fixed those issues for our users.