Hello, I'm relatively new to email marketing. I have a growing list of 2 million opt-in emails, an IEM setup with 255 ip rotations, etc. My problem is, i'm having issues warming up my IP's. After about a month of warming up, i'm still not inboxing. My question is, are there any services I can pay to use that already have high inbox rates? I really don't want to waste my IEM server setup, but it's really turning out to be a struggle. I understand that services like MailChimp require opt-in emails upon upload, and I don't want to do that. Any advice? Please don't ask me where I get my data, it should be relatively self-explanatory. Edit: I'm looking to send about 300-500k/day.