SMS Delivery Issues to USA
SMS traffic is heavily restricted when sending to the US. Rules & regulations can be found here.
In summary, if you're using long codes (normal mobile numbers) to send and you're doing any of the following, it's likely your messages will be blocked by the networks:
- Sending over 500 messages per day using a single dedicated number
- Sending repetitive messages to many recipients
- Sending URLs in messages
This is outside of our control. If any messages are blocked, they will still show as 'Sent' as we're not notified by the networks when this happens.
The solution to this is use a shortcode. There are 2 options:
- A dedicated short code. Pricing can be found here: https://www.clicksend.com/us/pricing/. To get started, let your account manager know. Setup time is normally 4-8 weeks.
- A shared short code. This is free and can be setup within 24 hours on your account. To get started, contact our 24/7 live chat support staff with answers to these questions: https://help.clicksend.com/SMS/usa-short-code-request