I am having an argument with a local discount airline in the EU:
They have been sending 3 up-sell emails for a single flight. Under GDPR, it is my right to revoke any consent to receive marketing material.
Their argument is that email is an all or nothing and if I opt-out of marketing emails, I will not receive purchase confirmations, etc.
I am wondering if this is legal under GDPR to limit service because I refuse to receive marketing emails.