Difference Between Adding Emails vs. Domains to the Suppression List

Last updated: July 2, 2025

Difference Between Adding Emails vs. Domains to the Suppression List

The suppression list allows you to prevent specific contacts or entire organizations from being contacted through your campaigns. You can add entries to this list by email or by domain — and each option functions differently.

📧 Adding an Email Address

When you add a specific email (e.g., john.doe@company.com) to the suppression list:

  • The system will block outreach to that individual email address only.

  • If this lead is ever added to a campaign, they will be automatically marked as closed before any message is sent.

  • The rest of the leads from the same company will not be affected.

✅ Use this when you want to suppress a single person (e.g., someone who unsubscribed or requested no contact).

🏢 Adding a Domain

When you add a domain (e.g., company.com) to the suppression list:

  • The system will automatically block outreach to all leads with email addresses from that domain.

  • Anyone from that company (e.g., alice@company.com, bob@company.com) will be closed automatically if added to a campaign.

✅ Use this when you want to suppress an entire company or organization.

⚠ Important:
Make sure to format domains correctly:

  • ✔ company.com (correct)

  • ✘ www.company.com (incorrect)

🧠 When to Use Each Option

Use Case

Add Email

Add Domain

A single person unsubscribed

✅ Yes

🚫 No

You want to avoid an entire company

🚫 No

✅ Yes

You're suppressing competitors

🚫 Not scalable

✅ Recommended

You’re honoring GDPR/opt-out requests

✅ Yes

✅ Yes (if company-wide opt-out)

Need help uploading your suppression list or deciding which method to use?
Feel free to reach out — we’re happy to assist!