Looks like this one is from 7-Eleven, but they are sending it to you directly. You don’t have to visit their store for this one.

Get a free pack of Trident gum. Click here and choose the flavor you want. You can choose Peppermint or Spearmint.

If you are unable to click it copy and paste the URL in your browser:

https://app.thesamplerapp.com/t/90/campaign

You can expect your free sample in up to 5 weeks.