Is custom email infrastructure safer for cold email deliverability?
馃摡 For the cold email infrastructure & deliverability experts: For me, it makes sense that ESPs will silently (diminishing deliverability) or loudly (banning) any accounts associated with well-known cold email-sending platforms. They can track individuals in the same warmup pools or simply look at the IPs connected to the accounts (via OAuth or not). And now with all these problems with Outlook, it just makes sense that the big agencies and professional senders opt for a strategy where they only send through their SMTP infrastructure and use their own sending software to reduce any risks.
I heard that with a high-quality, high-volume warm-up pool and custom infrastructure, you can easily and safely send 200 emails per account. Is that true?
Do sending softwares imprint their signatures on the emails they send? Via a shared IP or on the email content itself or any other way?
In short, developing your own email infrastructure + private IP sending software = less risk, consistent deliverability, and less dependence on third parties. I hope this is a good place to post this, all other groups seem too biased to hold this conversation! Any insights are appreciated 馃檪
