🌐What Is Domain Masking & How to Use It in Icemail

Domain masking is a powerful feature in Icemail that lets you use a secondary domain to represent your primary domain, hiding the original while maintaining a secure, professional email presence.

This technique helps boost cold email deliverability, protect your main domain from blacklisting, and ensure your links and email headers look credible and clean.

What is Domain Masking?

Domain masking makes it appear as though all activity is coming from a different (secondary) domain—even though you're actually using a primary domain behind the scenes. Instead of simply forwarding users or emails, Icemail uses a proxy layer with SSL encryption to mask your domain identity.

For example, instead of exposing mainbrand.com, you can send emails from campaignhost.co, keeping the main domain private and protected.

How Domain Masking Works in Icemail

1. DNS Setup
   You point the A record of your secondary domain to a trusted Icemail proxy IP.

2. SSL + Proxy Layer
   Icemail automatically configures SSL certificates for your secondary domain, establishing a secure connection for email links and headers.

3. Header & Link Rewriting
   All links and header references in your emails are rewritten to reflect the masked domain—not your primary one.

4. IP Management
   Icemail manages IP pools (shared or dedicated), preserving domain reputation and improving inbox placement.

Benefits of Using Domain Masking in Icemail

Improved Email Deliverability

• Masked domains help emails pass security filters (e.g., Mimecast, Barracuda).

• Reduces chances of being flagged as spoofed or spam.

Primary Domain Protection

• Keeps your main domain from being blacklisted.

• Useful when sending at scale across multiple outreach campaigns.

Enhanced Credibility

• Clean, branded links improve trust and boost reply rates.

• Appears secure thanks to automatic SSL.

Campaign Scalability

• Easily manage multiple sender domains without revealing your infrastructure.

How to Set Up Domain Masking in Icemail

Step 1: Open the Domains Dashboard

Log into your Icemail account and navigate to the “Domains” section.

Step 2: Choose the Domain

Click on the domain you'd like to use as your masked domain. A sidebar will appear.

Step 3: Go to Domain Settings

In the sidebar, click the “Domain Settings” tab.

Step 4: Enable Domain Masking

Under the “Domain Forwarding” section:

• Enter your main website URL (e.g., https://yourbrand.com) — this is where users will be redirected if they click a branded link.

• Check the box labeled “Enable Domain Masking.”

Step 5: Save Your Changes

Click “Save” to apply the settings.
Please allow 5–10 minutes for DNS and SSL propagation. Once completed, domain masking will be active.

Best Practices

• Use a clean secondary domain (new or warmed up) with good reputation.

• Masking is ideal for tracking links, CTAs, and protecting reply-to domains.

• Combine with SPF, DKIM, and DMARC for optimal authentication and security.

Why Use Icemail for Domain Masking?

Icemail’s domain masking engine is designed specifically for high-volume cold outreach. It ensures your sender reputation is protected while maximizing your deliverability and branding. Whether you're managing 5 domains or 500, Icemail’s infrastructure scales with your outbound strategy.

Related Articles

• Guide to Connect Existing Domains

• How to Set Up Domain Forwarding in Icemail

• How to Set Up DMARC Email in Icemail

• How to Use Catch-All Email in Icemail

• How to Add Mailboxes After Domain Setup

Need Help?

Questions or need support with your domain setup? Our expert team is just a message away.
Email us at team@icemail.ai and we’ll get you sorted in no time.