To run a voice activation campaign with Amazon Alexa, you need to have an Amazon Developer account and connect it to your SoPost account. If you don't have an Amazon Developer account already, you can create one by following these steps:

1. Go to the Amazon Developer Dashboard and click Create your Amazon Developer account. Fill out your details using your business email.

2. Enter the one-time password (OTP) code sent to your email address.

3. Enter your mobile number to improve the security of your Amazon Developer account.

4. Enter the one-time password (OTP) code sent to your mobile number.

5. Enter your developer and business details and click Agree and Continue. The business name and support email address will be displayed in the Alexa Skills Store. If you want to change your business name later, you will need to contact Amazon.

6. You have completed the creation of your Amazon Developer account and you can now access to Amazon Developer dashboard.