Twilio Error 30007 when broadcasting SMS with Zoho CRM
Carrier filtering can happen either because of the content of your messages or the volume: https://support.twilio.com/hc/en-us/articles/223181848-How-Does-Carrier-Filtering-Work-That article details some of the specific reasons that carrier can filter for, but looking at your messages it looks like it might be happening because of the repetitive nature of some of the messages you are sending and potentially the volume. Technically, longcode phone numbers are for person to person messaging, so carriers can filter any messages they suspect as coming from an application. Links, notifications, and repeat messages are red flags for this type of filtering. Volume is also a big factor, as in the above guidelines we recommend not sending more than 200 messages per longcode number per day. Looking through your logs I see that most of your messages are coming from one number (12393070003) and there are some days where you sent upwards of 1000 messages on this one number. The first thing to try would be to distribute your messages across more numbers. This is made easy using a Twilio Messaging Service (aka Copilot): https://www.twilio.com/copilotThe other thing we'd recommend doing is separating the notifications you're sending from the conversations. The conversations can continue happening on longcode numbers, but you'll want to move your notifications to short codes or toll-free numbers. The official way to send Application to Person messages in the US is to use a short code: https://www.twilio.com/sms/short-codesShortcodes are the carrier designated way to send high volume promotional or transactional messages so that's the best way to ensure your traffic is not filtered. Another potential solution would be to use a toll-free number. Toll-free numbers are still subject to carrier filtering, but are designated for business usecases so they tend to have less filtering than long code numbers. They are cheaper and quicker to setup than a short code, so they might be a good short term solution to test out: https://support.twilio.com/hc/en-us/articles/223183168-Buying-a-toll-free-number-with-Twilio