Add your own domain response

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1

I’m facing an issue in receiving a mail after running my code for temperature sensor code, it shows the response as follows:
Reading sensor value
Sensor value is: 291
Making request to Mailgun to send an email
Response received from Mailgun is: Sandbox subdomains are for test purposes only. Please add your own domain or add the address to authorized recipients in Account Settings.

2

Hi @chayank.racharla,
refer this link, think that would solve your query.
https://help.mailgun.com/hc/en-us/articles/217531258-Authorized-Recipients

3

Hey! a small doubt, is it mandatory to put credit card details as I didn’t gave that information

4

It is not mandatory, but you are restricted to some usage. If you need to create custom domain then you must provide credit card details.