> I don't know what else to do These days you also have to get a bunch of different VPSs and test sending e-mails from their IPs and choose the ones working. T

> I don't know what else to do These days you also have to get a bunch of different VPSs and test sending e-mails from their IPs and choose the ones working. That's what e-mail marketing companies do. Because a lot of IPs and subnetworks out there have poor reputation or even completely blacklisted and that reputation is not generally recoverable.