How to cap communications per domain?

[Anonymous]

I'm trying to ramp up my deliverability rates, and I realized we may be being marked as SPAM because we have several contacts per domain (sometimes hundreds) and our email cadence sends to all prospects at the same time. So I think that because the ESP at the domain is receiving sometimes hundreds of our emails at once, they're flagging us. Does anyone know how to alleviate this issue?

[Anonymous]

Sending to hundreds of emails at once should not be an issue if you have a good reputation.  You may have hit spam traps and other pitfalls and this is why you are having trouble.

[Anonymous]

Yes, my concern is we've already hit those spam traps and are flagged. We just purchased a dedicated IP so I'm trying to keep our reputation up.