Case Studies

How agencies and sales teams scale cold email infrastructure on InboxKit — the systems, the math, and the results behind reliable inbox placement.

How LeadHaste Scales 100+ Client Campaigns on InboxKit Without Burning Domains

How LeadHaste runs cold email infrastructure for 100+ client campaigns — thousands of domains and inboxes — without burning domains: the infrastructure math, monthly rotation, naming conventions, warm-up protocol, and retirement triggers behind the system.

9 min readRead story

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