Combine Mailboxes for better Email Outreach

In the world of email marketing, it’s important to employ strategies that increase engagement and boost conversion rates.

One effective approach is to use multiple mailboxes per campaign.

In this article, we will learn all about this technique, which involves sending emails from different email addresses associated with the same campaign.

So let’s dive in and learn how to scale your email campaigns!

Benefits of using multiple mailboxes per campaign

By using multiple mailboxes, you can optimize deliverability, improve sender reputation, and personalize the recipient experience.


  • Using multiple mailboxes helps distribute emails to different IP addresses, reducing the risk of sender reputation issues and ensuring higher deliverability rates.
  • By rotating mailboxes, you can avoid potential blacklisting due to high bounce rates or spam complaints and protect your overall sender reputation.
  • By using multiple mailboxes, you can create segmented email lists and send targeted messages from specific mailboxes associated with each segment. This personalization increases engagement and improves conversion rates.
  • By diversifying mailboxes, you can establish distinct brand identities for different campaign segments, building brand awareness and customer loyalty.

Plus: Multiple mailboxes make it easy to A/B test different subject lines, sender names, and email content to optimize email performance and identify the most effective strategies.

How does it work?

First, you need to associate as many email accounts as you want with a campaign. These email accounts can be from different domains or from the same domain.

Then, the emails are sent to the leads in the campaign and automatically rotate through the connected email accounts. This ensures that the volume of emails sent from each mailbox is balanced, reducing the risk of any one mailbox being flagged as spam.

This process may vary depending on the tool you are using.

For example, Outbound Rocks eliminates the need to select mailboxes. Instead, you can configure and use multiple senders to improve deliverability.

You can also monitor the performance of your campaign in the Outbound Rocks reporting dashboard.

This dashboard shows you how many emails were sent, how many were opened, and how many were replied to, among other metrics.

Outbound Rocks Dashboard


In the competitive world of cold email, optimizing deliverability and maximizing reach are critical to success

Outbound Rocks innovative features allows you to unlock these critical elements and take your cold email campaigns to new heights.

If you want to improve deliverability and boost conversion rates, you can try Outbound Rocks for free. Fill out the form below and we will contact you shortly!