Does anyone have experience with using Twilio to send dynamic SMS messages in bulk? For example, we're running a program this summer where we'll need to notify ~30k people that they will be participating in a demand response event for the day. In order to do this, we'll be changing a data value on the contact record via API, which will, in turn, trigger a campaign to call the Twilio webhook. I know sometimes calling a webhook for each person takes awhile for the campaign to run through everyone. If this is a time-sensitive message, does anyone have any better ideas on how to set this up?
Any tips are much appreciated!