My biggest political regret of all time is using Act Blue to make donations.
The endless text and email spam generated by that decision is literally unstoppable.
There's no universal opt out option available, and they claim zero responsibility for the actions of any entity that uses the data their platform provides to its users.
This should be illegal in all contexts, but data brokers are immune from all consequences.
Act Blue is a data broker, über alles
DO NOT USE THEM