A dedicated IP is used only by your mail; a shared IP pool is used by many senders on the same platform. Dedicated IPs give control over reputation but require volume and warm-up; shared pools borrow the platform's reputation.
Do I need a dedicated IP for good deliverability?
No. Domain reputation dominates. Dedicated IPs are for high-volume senders who want isolation.
Why does dedicated IP addresses matter for deliverability?
Choosing wrong either exposes you to neighbors' behavior or leaves an IP too cold to build reputation.
What is the first step to get started with dedicated IP addresses?
Estimate steady daily volume; below roughly 50,000 per day, shared pools usually perform better.
What is the most common dedicated IP addresses mistake?
Buying a dedicated IP for a small list and letting it go cold.