I receive many emails those days:
If you haven't given your consent before 2018 May 25 to stay subscribed to our newsletter, we will be forced to remove your email from subscription, in accordance to GDPR.
1) Is it true that if I haven't asked agreement to past customers of my company before May 25, I will have to remove all of them from newsletter subscription?
2) I was thinking about doing such an email in September 2018 when launching a new product:
> 2018 Sept 1st > You receive this email as a past customer of our service. > We are happy to inform that we launch the new product XYZ. > [...] > By the way, we haven't asked this before so we do it now: do you want to stay subscribed to this newsletter? > [ YES ] [ NO ] <- big buttons with direct links
Is this fine / GDPR compliant?
Note: I'm based in Europe.