[petercooper]

The support has gotten worse since Twilio took over. Even if you ignore delays, they struggle to understand problems quickly. We've had a couple of incidents where they are hitting our webhook over and over for days and prove unable to diagnose it properly.

The service at a technical level is pretty good. It does the job, the pricing is fine, and deliverability is good. I think their IP address space is considered a bad neighborhood by some spam filtering systems though, since we can't send email to systems protected by Mimecast (sorry Red Hat, Packt, Siemens, et al.) despite our own dedicated IPs having very solid reputation and histories.