[route3]

Yes, this is surprising. Twilio has a reputation of being awfully transparent -- they had a billing systems issue back in July and handled it quite well, IIRC. They also do a great job with their developer evangelist program.

I wonder if someone has created a pricing matrix/table that updates and compares the SMS/voice API providers. For example, I know Plivo is slightly cheaper for SMS, domestically (USA). A price comparison table might make a good holiday project :)

Although I understand this wouldn't help your case. As you pointed out, the SMS provider would have already increased rates by the time you could be notified of increases.

[coolboykl]

Here's reply from Twilio CSR

"

" Hi James,

Thanks again for providing all of the detailed comments concerning the advanced notifications for pricing changes. Your points are sound, and I understand that especially for customers with high volume use cases, relying on the pricing CSV file would not remove the costs of sudden price changes and would pose an the obstacle to the pro-active re-routing of traffic.

I've shared all of your comments with our product team, and I'll let you know as soon as I have more information concerning potential pricing change notifications. This would be a major change in the way that we price our Global SMS service, but I hope to be able to pass along some comments from our team by the beginning of next week.

We appreciate your thoughts about our SMS service and our pricing. I'll provide an update as soon as I can."