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Deliverability Letter

Shared IP

Also known as: Shared Server

A shared IP is an IP address that many companies use to send email. Your messages go out from the same address as other senders on your platform, so your reputation is linked to how that group behaves.

A shared IP is a technical address that many businesses share for their email sending. When you use an email service provider, your messages usually leave from this shared address instead of your own. The provider groups senders with similar volume and quality, which keeps sending patterns steady.

This setup matters because inbox providers judge both you and the shared IP as a whole. Strong engagement and low complaint rates from everyone on that IP help mail land in the inbox more often. For most small and mid sized senders, a healthy shared IP managed by a good provider works better than trying to manage a dedicated IP alone.

If you are on a shared IP, focus on what you can control. Send to people who open and click. Remove cold or inactive contacts on a regular schedule. This keeps your own reputation strong and supports the wider IP pool.