It takes some time, but even with small amounts it will eventually work out. I started to send requests for whitelisting my ip to the technical support emails a

It takes some time, but even with small amounts it will eventually work out. I started to send requests for whitelisting my ip to the technical support emails as well and some MTAs even have forms for that. Keep running it! The net was made for decentralised services. I think it will even be in 2020 worth it.