Free Email Tools
Quick, free utilities to make your cold email work harder. Each one runs instantly in your browser — no signup required.
-
Cold Email Subject Line Tester
Score any cold-email subject line against open-rate predictors: length, spam-trigger words, sentiment, personalization tokens. Free, instant.
Open tool → -
Email Spam Words Checker
Paste your email body — we'll flag the words that trigger spam filters and rate your overall spam-risk score.
Open tool → -
Email Warmup Schedule Calculator
Get a 30-day warmup schedule for a new domain or mailbox. Tells you exactly how many emails to send per day.
Open tool → -
Email Automation ROI Calculator
Input team size, current reply rate, and deal value — we calculate the revenue uplift from switching to automation.
Open tool →