Qualtrics has an integration enabled called Tango Card/Rewards Genius. This integration will allow you to easily configure any Qualtrics survey to automatically send a reward link (gift card) to respondents upon survey completion.
Qualtrics & Rewards Genius can show you how to use the incentives (gift cards) feature embedded in Qualtrics. You will need to sign up for Rewards Genius and set up your account, and afterwards set up the incentive inside your survey using these step-by-step guides from Rewards Genius and Qualtrics:
Set up in Tango:
Set up in Qualtrics:
https://www.qualtrics.com/support/survey-platform/actions-module/single-instance-incentives/