Positive reply rate calculator
Calculate human and positive reply rates from reviewed unique-contact counts.
Open tool →Free outreach tools
Calculate, check and plan before you send.
24 browser utilities with visible assumptions, examples and limits. Use aggregate counts or fictional samples first. These tools do not send emails or change your workspace.
Free cold email subject line generator
Generate five editable subject ideas from your offer, audience and verified business context. No signup or AI call required.
Open tool →SPF lookup budget checker: manual evaluated-path planner
Count supplied DNS-dependent SPF terms against the ten-term budget, including nested terms you have traced yourself.
Open tool →DMARC alignment explainer tool
Compare one authenticated domain with the visible From domain under explicit strict or relaxed alignment assumptions.
Open tool →Cold email sequence capacity calculator
Estimate aggregate message capacity after reservations and the minimum capacity-days for a complete sequence.
Open tool →Cold email sending window planner
Create a weekly local-time sending worksheet with an IANA timezone and explicit weekdays.
Open tool →Cold email bounce rate calculator
Calculate an observed bounce percentage for one defined message cohort and observation cutoff.
Open tool →Cold email meeting rate calculator
Calculate the percentage of unique contacted people who booked at least one meeting.
Open tool →Cold email campaign cost calculator
Combine software, data, mailbox and labor inputs to calculate cost per contact and booked meeting.
Open tool →Cold email sample size estimator for one proportion
Estimate observations needed for a chosen absolute margin of error at approximately 95% confidence.
Open tool →Cold email confidence interval calculator
Calculate a 95% Wilson score interval around a binary outcome rate, including zero-outcome samples.
Open tool →Cold email CSV validator
Check pasted CSV structure, email syntax, duplicate headers and spreadsheet-formula risks locally in your browser.
Open tool →Cold email duplicate contact checker
Find repeated email values in a pasted CSV without deleting, merging or uploading contacts.
Open tool →Cold email variable previewer
Preview literal {{key}} replacements from a JSON object and see which values remain unresolved.
Open tool →Cold email signature builder
Build a simple plain-text signature and escaped HTML snippet without images or tracking resources.
Open tool →Cold email opt-out text builder
Draft a clear reply-based removal sentence and the operational check needed to support it.
Open tool →Cold email copy checklist tool
Find unresolved variables, question marks, visible links and absolute-claim phrases for a human copy review.
Open tool →Cold email readability checker
Measure approximate word and sentence lengths to guide a manual clarity edit.
Open tool →Cold email sequence timeline visualizer
Turn relative day delays into a readable nominal sequence calendar.
Open tool →Cold email UTM builder
Add encoded source, medium and campaign tags to an HTTP(S) destination URL.
Open tool →Cold email experiment brief builder
Create a copyable study brief with a control, variant, outcome, assignment unit and stopping rule.
Open tool →Cold email ICP worksheet builder
Turn an audience idea into a researchable problem, fit signal, disqualifier and next check.
Open tool →Cold email campaign audit worksheet
Record five launch checks, their owner and the next action without turning untested settings into a readiness score.
Open tool →Cold email reply classification worksheet
Record a human reply label, supporting evidence and the next operational action.
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