Hi,
Setup your own server, remotely hosted with a flexible DC and configure it with commercial MTA to send emails. The only viable solution to send cold emails with freedom. Major email clients certainly block commercial activity, especially when it appears as spamming/ relaying of unsolicited messages. So you would need a server set-up for your sending.
I am Adnan and I’ve spent 7 years of my career in the deliverability industry, setting up infrastructure for high volume email delivery, working closely with the development teams during the development lifecycle of email marketing and automation applications, and completing a list of projects for mail server configuration.
Plus, if you go with the option I'm proposing to have your server set-up with the required set of software application, you may need a couple of domains for sending and one for primary installations. The sending domains would appear in the tracking route and the message headers. And when sending cold emails, it makes domains vulnerable for getting trapped by blocklists. Will discuss the details in the next session of discussion certainly. Rest assured, when it comes to set-up infrastructure to monetize cold lists, we outperform others.
If you are interested in the solution I'm proposing, we can help you set-up and configure it fully for your sending. I look forward to hearing back from your side.
Regards.