How long can you continue to use SMS sandbox for SNS?

Question

So I am a developer learning to send automated SMSs via SNS. Obviously, I have no need to try and move out of sandbox for now, but I feel like there should be a time limit to using it. Something like "You can send SMSs to verified phone numbers for 6 months from sandbox. After this, you either contact support to move out of sandbox, or you cannot send SMSs anymore." I haven't found anything like this written anywhere yet, but I feel like no time limit would be too good to be true. Can someone please verify?

Accepted Answer

The sandbox is only to prevent people from spamming phones with messages. If you get out of the sandbox and would start spamming, AWS will put your account back into the sandbox.

The documentation says:
- You can send a maximum of 20 SMS messages per second.
- You can send SMS messages to a maximum of 10 verified destination phone numbers.

[https://aws.amazon.com/blogs/compute/introducing-the-sms-sandbox-for-amazon-sns/]()

I think these conditions are 'forever'.

You still have to pay for the SMS's sent. The free tier is only for US numbers:

From the faqs ([https://aws.amazon.com/sns/faqs/]())

**Q: Is there an AWS Free Tier allowance for sending SMS messages?**

**Yes**—the first 100 SMS messages you send to destinations in the United States each month are included in the AWS Free Tier. This allowance doesn't expire. Note that a "message" in this sense refers to a single transmission that contains 140 bytes of information or less, as explained in the answer to the previous question.

If you send more than 100 messages to destinations in the United States, or if you send messages to destinations outside the United States, each message you send is charged based on our current pricing rates. You can find the latest rates on the SMS Pricing page.

How long can you continue to use SMS sandbox for SNS?

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