Politicians are, unfortunately, spammed by thousands of letters by gods-know-who (sometimes daily) on various issues I hear from multiple sources on the internet (and its a bad thing in my opinion as they cannot answer this way - there should be more formal (and organized, and modern) procedure to contact a politician, as I think citizens should be able to.
I guess https://fightchatcontrol.eu/ allows to spam a politician’s inbox by clicking that red button, which is not ok. Too easy.
But here it seems one Croatian politician have mass-answered back about chat control: Reddit - The heart of the internet
Also made public statements, talked to his colleagues and contacted prime minister asking to reverse country’s decision. Success! An example it matters.