Email Marketing: How to Choose Multiple Domains

MiLe31 said:

Howdy,

I'm gearing up a 7-figure email list marketing campaign. I understand that it is prudent to send from multiple domains so as to not lose much momentum in the event one of my domains is blacklisted and, of course, to protect my main domain.

My question for everyone is: how do you go about choosing those proxy domains? If my main domain is XYZetc.com and my secondary domain for mailing blasts is XYZetc.net... will Google still blacklist my main domain due to the obvious association?

Any tips, anecdotes or articles on the topic would be very appreciated.

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Meerakat said:

Great question.

Managing a SMTP server surely feels weird because it's 2020 and these providers have become very strict about spam. Especially if you are cold email marketing, your SMTP server will take a long-long time to build up its reputation. The main providers in the game are: Gmail, Yahoo, Outlook, etc...they have a system of detecting spam and they also make sure certain standards of a SMTP server is passed such as having good DNS records & sending emails that do not bounce.

The main factor here is to send out quality emails to your own subscribers so that they don't report you. No reports, sending quality mails and warming up your SMTP server will make it gain reputation really fast.

To answer your question, you can even send mails from your main domain provided the SMTP is configured to a different domain + IP.

An ISP always checks the IP to see if it's pointed to the correct domain the email has been sent from. In theory if you have two main domains, let's say:

1. abc.com
2. abcd.com

and both of them point to the same IP, and if you are sending from abcd.com then an ISP will blacklist the IP + domain both, your main domain will also be affected because it's being pointed to the same IP address. Which is why, using a lot of IP's when sending out emails is recommended which is basically known as IP rotation.

Each time a different IP is used for sending out mails, this way it reduces your chances of being blacklisted. But blacklisting shouldn't be your issue if your list is clean, no bounce traps, no spam traps and is absolutely made of people who subscribed and are interested in what you have to say.

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cnick79 said:

You could also mail from subdomains (newsletter.abc.com, marketing1.abc.com, mail2.abc.com, etc...) of your main domain since each sending domain will have it's own unique DKIM that identifies you. I do this so emails from [email protected] are not impacted by [email protected]. I think people underestimate the value of building their domain reputation and focus more on IP addresses. Yes, you do need a clean IP addresses to send from as this will help you increase sending volume over time, but the reputation of the sending domain is good for inboxing.

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MiLe31 said:

All of my emails were provided to me by their owners... however... I will be marketing something slightly different to them.

Basically, I am a recruiter and I've collected millions of resumes over the years. I'm starting a job board and would like to invite them to join. So... my emails are related, but not actually what they signed up for, if that makes sense.

I will definitely deduplicate and debounce the list prior to beginning my marketing.

I really appreciate that thorough answer from you.

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MiLe31 said:

Thank you. As a follow up, let's say [email protected] gets blacklisted or the whole domain does... would Google, Microsoft, et all, then block or see as suspect the main domain of abc.com?

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