Free tools for pre‑warmed email infrastructure
Four small tools for the decisions you make before a cold email launch: is the domain set up, how many mailboxes do I need, how should a fresh mailbox ramp, and what does waiting cost.
SPF, DKIM and DMARC checker
Live public DNS lookup with a 100-point score, provider detection and the exact record to publish for anything missing.
Mailbox and domain calculator
Work back from meetings per month or sends per day to mailboxes, domains and a monthly budget.
Warmup schedule builder
A day-by-day ramp for fresh mailboxes with checkpoints and pause rules. Download it as CSV.
Cost of waiting calculator
Emails, replies, meetings and pipeline you give up while fresh mailboxes warm up.