Email Warmup
Gradually building a new inbox's sending reputation by starting with tiny volumes and realistic engagement before real campaigns. Typically 14–30 days.
Free · no signup · last reviewed August 29, 2026
The definition
Gradually building a new inbox's sending reputation by starting with tiny volumes and realistic engagement before real campaigns. Typically 14–30 days.
Why it matters to an owner
Skipping warmup burns the domain you just bought. It's the part of cold email you cannot rush with money.
Keep going
Email Warmup, ExplainedWhat warmup actually does, our planning timelines and the reasoning behind them, and the h…Cold Email Infrastructure, the Honest VersionWhy cold email fails in the plumbing before copy matters: separate domains, the authentica…DNSBL (DNS Blacklist)Public lists of domains and IPs associated with spam, queried by mail filters in real time…
This is the work. Want it done?
Everything here is free to use yourself — that’s the point. If you’d rather a senior marketer just handle it, in your accounts and your name: 20-minute call, no pitch deck.