Email Readability Checker
Computes Flesch reading-ease score for email body text. Higher = easier to read. B2B email sweet spot: 50-70.
Standard Flesch formula: 206.835 − 1.015 × (words/sentences) − 84.6 × (syllables/words). Approximates syllables by vowel-group counting.
Auditing cold email body. Calibrating writing complexity to the target audience.
FAQ
What's a good Flesch score for B2B email?+
50-70 is the sweet spot. Above 70 reads as too casual; below 50 reads as bureaucratic.
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We update these pages when the underlying mechanics change — new mailbox-provider rules, new tracker behavior, new measurement gaps. The dates above are real revisions, not auto-touches.