How To Safely Scale Up Your Cold Email Outreach With Inbox Rotation

If you send too many cold emails from a single email address, then all of your emails will go to spam.

The way to scale your sending volume is by buying additional domains and creating a new email address with each domain. You can then use special cold email sending software (Emailchaser) to add multiple sending email accounts to a single campaign (inbox rotation).

In this article, I will teach you exactly how to scale your cold email outreach campaigns so that you don’t go to spam.

• The problem
• The solution (inbox rotation)
• Things to consider
• Final thoughts

The problem

The problem with cold email is that if you send too many emails with the same email address, then all of your emails will be marked as spam by email service providers.

Some people say that you can send up to 100 cold emails per day per email address, others, such as myself, say that it is safer to only send 40 cold emails per day per email address.

You can read my article How Many Cold Emails Can You Send Per Day Before Going To Spam to learn more about this.

This presents a problem: If you can only send 40 to 100 cold emails per day per email address, then how can you scale your cold email outreach campaigns?

What if you want to send more than 40 to 100 emails per day?

Fortunately, there is a solution to this problem.

The solution (inbox rotation)

The solution to this problem is to buy more domains, and create a new email address with each domain.

Let’s say we can only send 40 cold emails per day per email address; if we want to send 400 cold emails per day, then we would need to buy 10 domains, and set up an email address with each domain.

Using this method, you can scale your cold email campaigns infinitely. The only thing preventing you from sending more emails is the number of domains you buy.

Some people say that you can create 2 or 3 email addresses per domain, but I recommend that you only create one email address per domain to be safe.

You should send your cold email campaigns with Emailchaser, because Emailchaser has a built-in feature called "inbox rotation" which allows you to add multiple sending email accounts to a single campaign.

Imagine you have 1,000 leads that you want to email in a single campaign. If you only send from one email address, and you only send 40 emails max per day (per email address), then it will take a very long time to email all 1,000 leads.

Using Emailchaser's inbox rotation feature, you can add as many sending email accounts as you want to your campaign, and it will automatically rotate the sending between each email account, allowing you to increase your sending volume far beyond 40 emails per day.

Things to consider

Now that we have established that it is technically possible to send as many cold emails as you want without going to spam, we should consider whether this is even a good idea.

Just because you can do something, doesn’t necessarily mean that you should do it.

Some people say that volume is what matters most in cold email. Others say that personalization is more important.

I lean more towards the side of personalization and targeting a smaller list of highly relevant leads. I think sending thousands of generic non-personalized cold emails each day is a losing strategy.

Below is a real case study shared by the ex-Chief Revenue Officer at Brex. He shares Brex’s most successful outbound sales campaign. The interesting thing is that they only contacted 300 companies, but they were able to close 169 of them into paying customers. This shows that high level salespeople are not sending tens of thousands of generic emails as some would advocate:

1/ The best outbound campaign we ever ran at Brex (75% demo rate, 75% demo to close):

Brex launched in 2018 as the first corporate card for startups. After launch, when we were still ~30 employees and near 0 rev, we ran the most successful outbound campaign I've ever seen.

— Sam Blond (@samdblond) January 9, 2023

On a similar note, below is a short video showing a conversation between Michael Seibel and Dalton Caldwell discussing how sending thousands of generic spam emails is not an effective sales strategy:

I recommend that you read my article How To Do Outbound Sales (Beginner’s Guide) to learn how the best salespeople in the world send cold emails.

Frequently asked questions

Final thoughts

You can scale your cold email campaigns infinitely if you buy additional domains and create a new email account with each domain.

You can use Emailchaser's "inbox rotation" feature to easily add an unlimited number of sending email accounts to your campaigns.

My article How To Send Cold Emails Without Going To Spam teaches you how to buy additional domains and create new email accounts.

However, you should consider whether this is actually a good idea. As mentioned previously in this article, most professional sales teams opt for a more personalized approach to outbound sales.

Whether you choose the personalized or high volume route, I recommend that you send your cold emails using a specialized cold email software such as Emailchaser. This will make the process much more efficient.

Finally, you can learn how the best salespeople in the world do outbound sales by reading my article How To Do Outbound Sales (Beginner’s Guide).