# Do I need to worry about IP reputation?

**IT DEPENDS**—your ESP worries for you

> On a shared pool, IP reputation is your provider's job—and providers weigh the IP less every year anyway. It becomes your problem the day you take a dedicated IP.

People fixate on IP reputation because when it fails, it fails loudly—scary SMTP responses, bounce spikes, blocklist drama. But the fixation is mostly misplaced.

## Why it's usually not your problem

- **Providers weigh it less every year.** Senders switch ESPs and rotate IPs constantly, and IPv6 made addresses cheap—so the sending IP has become a weak identity signal. Mailbox providers moved the trust ledger to [domain reputation](https://doineed.email/domain-reputation), which reflects behavior rather than infrastructure.
- **On a shared pool, it's managed for you.** A good ESP curates the pool: monitoring performance, enforcing standards, removing bad actors. You inherit the pool's standing on day one—that's the entire value proposition of shared sending.
- **True IP blocks are the good kind of problem.** Rare, temporary, and mechanical to fix—unlike domain damage, which is ambiguous and slow to repair. If your mail is landing in spam, the IP is almost never the culprit.

## When it becomes your problem

Take a [dedicated IP](https://doineed.email/dedicated-ip) and the ledger is yours alone: you warm it, your volume sustains it, your quiet weeks decay it, and your mistakes are unambiguously attributed to you. That's a fair trade for high-volume senders with steady patterns—and a self-inflicted wound for everyone else.

Running [your own mail server](https://doineed.email/my-own-mail-server) is the same deal with less support and worse defaults.

## What to do instead of worrying

Spend the anxiety on the things the IP conversation distracts from: authentication in order, [bounce and complaint rates](https://doineed.email/bounce-and-complaint-rates) under their thresholds, engaged recipients, consistent volume. Get those right and the IP question answers itself—usually with "the shared pool is fine."

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- Canonical: https://doineed.email/ip-reputation
- Learn more: https://resend.com/blog/do-you-need-a-dedicated-ip
- All questions: https://doineed.email/llms.txt

An opinionated answer from the [Resend](https://resend.com) team.