How To Safely Scale Up Your Cold Email Outreach (2024)

Updated July 2024

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 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.

image showing the spam folder in an email account

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 soultion is inbox rotation.

This involves buying more domains, and creating a new email account with each domain.

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

image of four different email addresses on four different domains

Some people say that you can create 2 or 3 email accounts per domain, but I recommend that you only create one email account 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 sender 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 account, and you only send 40 emails max per day (per email account), 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.

Some people say that volume is what matters most in cold email. Others say that relevancy of your lead list is more important.

In my opinion, it's better to target a smaller list of highly relevant leads. I think sending thousands of generic non-relevant cold emails each day is a losing strategy which will eventually get your domains and email accounts burned.

Below is a video showing a real cold email campaign that I launched. In this video, you can see how I made a very relevant lead list, and how it resulted in a 30%+ positive response rate:

Frequently asked questions

What is the most difficult part of scaling cold email outreach?

The most difficult part of scaling cold email outreach is finding enough high quality leads that are relevant to your offer, and personalizing your emails for each lead.

Are there any risks involved with sending lots of cold emails?

Yes, there is a risk of “burning” your domain, which will cause all of your emails to go to spam. This is why you need to follow the advice in this article.

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 connect an unlimited number of sender email accounts to your campaigns.

However, sending a high volume of cold emails isn't always a good idea. Instead, you should build highly relevant lead lists. You can learn how to do this in my article How To Build A Lead List.

picture of George Wauchope

Article by

George Wauchope

Founder of Emailchaser.

I have been working in the sales & marketing industry for nearly a decade.

When I’m not working on my business, I enjoy eating sushi & doing jiu-jitsu.

About the author