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What Is a Dedicated IP for Email Sending?
TL;DR
A dedicated IP is an IP address used only by your account to send email, so your sender reputation depends solely on your own sending behavior rather than being shared with other senders on the same IP.
Dedicated vs. shared IPs
On a shared IP, many different accounts send mail from the same address — common with lower-cost or entry-tier sending plans. Your deliverability is partly tied to what everyone else on that IP does: if another sender gets flagged for spam, mailbox providers can throttle or block the whole IP, including your mail.
A dedicated IP is used by one account only. Reputation is built (or damaged) entirely by your own sending — no one else’s behavior affects it, and you have full visibility into what’s driving your deliverability numbers.
When a dedicated IP matters most
Dedicated IPs matter more as sending volume grows — a small list sent occasionally rarely runs into shared-IP problems, but sustained, high-volume cold outreach benefits from isolating your reputation. Google and Microsoft tightened bulk-sender rules in February 2026, and shared-IP senders were reported to see the steepest deliverability drops from that change.
The tradeoff is that a dedicated IP starts with zero reputation of its own and needs its own warm-up period — you can’t inherit an established shared IP’s trust.
