Dedicated IP addresses: use them when traffic can sustain reputation

A dedicated IP isolates reputation but also removes the protection of a well-managed shared pool. Low or irregular volume may not establish a useful reputation.

A dedicated IP gives one account direct responsibility for the reputation attached to that address. It can make diagnosis and traffic separation clearer, but it does not automatically improve delivery.

When dedicated can help

  • Sending volume is substantial and reasonably consistent.
  • Mail streams and suppression processes are mature.
  • The organisation can monitor reputation and provider responses.
  • Isolation is useful for a particular traffic profile.

When shared may be better

Low, intermittent or sharply seasonal traffic may struggle to build its own history. A responsibly managed shared pool can provide more consistent aggregate activity, while AuthSMTP monitors the wider service.

New or long-idle dedicated IPs may need gradual introduction. Sudden high volume, poor lists or complaints can damage the isolated reputation quickly. See AuthSMTP dedicated IP guidance; allocation is subject to qualification and approval.

Key takeaway
Choose a dedicated IP for a clear operational reason, then maintain consistent responsible traffic and active monitoring.
Practical next step

Compare your daily volume, variability, complaint rate and operational monitoring capability before requesting a dedicated IP.

Using AuthSMTP

AuthSMTP offers dedicated IP options to suitable accounts and manages the underlying server infrastructure; the customer remains responsible for the traffic quality and consistency that establish the IP's reputation.