What Is a Dedicated IP and Do I Need One?

When you send emails, they are delivered via an IP address. Understanding the difference between a shared IP and a dedicated IP can help you decide which option is right for your sending needs.

What Is an IP Address in Email Sending?

An IP address is a unique identifier assigned to a mail server. Inbox providers use it — along with your domain — to evaluate your sender reputation and decide whether your emails should land in the inbox or the spam folder.

Shared IP vs Dedicated IP

Shared IP – Your emails are sent from the same IP address used by other Mailzzy senders. Your reputation on a shared IP is influenced by the sending behaviour of all users on that IP.

Dedicated IP – You are the only sender using that IP address. Your reputation is entirely based on your own sending behavior.

Do I Need a Dedicated IP?

A dedicated IP is not necessary for everyone. Here is a general guide to help you decide:

You may benefit from a dedicated IP if

• You send more than 50,000 to 100,000 emails per month

• You have a consistent, high-volume sending schedule

• You need complete control over your sender reputation

• You are sending transactional emails that require high deliverability

A shared IP is likely sufficient if

• You are just starting out with email marketing

• You send fewer than 50,000 emails per month

• Your sending volume is irregular or seasonal

The Importance of Warming Up a Dedicated IP

A brand new dedicated IP has no reputation — it is completely neutral. This means you must warm it up gradually before sending large volumes. Jumping straight into high-volume sending from a cold IP will almost certainly trigger spam filters.

Follow the warm-up schedule in our Warm Up Your Sending Domain or Dedicated IP guide to build a positive reputation safely.

How to Request a Dedicated IP in Mailzzy

Dedicated IPs are available on qualifying Mailzzy plans.

To request one, contact the Mailzzy support team or add it directly within the platform. Your account manager will assist with setup and a tailored warm-up plan.