IP warmup, explained
A new or cold sending IP has no reputation. IP warmup gradually increases volume so providers learn to trust it before you send at scale.
If you send from a dedicated IP (your own mail server or a dedicated address from an ESP), that IP earns its own reputation. Ramping volume gradually is essential — flooding a cold IP is one of the fastest ways to get filtered.
Gradual, human-like warmup
Volume ramps day by day from a safe baseline so mailbox providers see steady, organic growth instead of a spammy spike.
Live reputation scoring
A 0–100 score built from real signals — authentication, bounces, complaints, placement and engagement — so you always know where you stand.
Inbox placement tracking
See whether your test mail lands in Primary, Promotions or Spam, plus SPF/DKIM/DMARC results, before you run a real campaign.
Dedicated vs shared IPs
On a shared IP, you inherit the pooled reputation of every sender on it. On a dedicated IP, the reputation is entirely yours — powerful at scale, but it must be warmed up from zero.
Whichever you use, authentication still matters. Confirm SPF, DKIM and DMARC with our free checkers and verify you're not on a blacklist before ramping volume.
Frequently asked questions
How long does IP warmup take?
Typically a few weeks of gradual ramping, depending on your target volume. The key is consistency and low complaint rates throughout.
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