As per GDPR one cannot approach EU data subject unless proper legal basis and lawful purpose is not defined. Businesses in India approach EU data subject by either Email or Phone and this means yours email script and call script should be compliant as per GDPR framework.
ICO has fined BT, Flybe and Honda for unsolicited emails though they were in process of complying with GDPR. So it is important to understand how your emails should be framed when approaching prospective customers and how your calling campaign is designed when speaking to EU data subject.
In crux how to decide two legal basis to be chosen (consent/Legitimate interest) and then how to evidently prove that Email script or call script is GDPR compliant
Do contact us if you wish to have GDPR compliance solution for your business and help your organization Stay One Step Ahead !