Hetzner lock 25 and 465 port

Hetzner lock 25 port: https://docs.hetzner.com/cloud/servers/faq/#why-can-i-not-send-any-mails-from-my-server

Does anyone have experience of removing this lock? I want to buy a Cloud VPS from them, however I need an email server there.... Want to avoid a situation where I move everything there and they say - we won't remove that lock for you.... (you can ask them after 1 month of use + payment of the first invoice). What does this look like in practice?

Alternatively, how do you guys deal with this problem? Do you set up an email server elsewhere? Where?