Free · No Sign-Up · Instant

Open Rate
Calculator

Measure subject line and sender name performance. Input unique email opens and total delivered counts to determine read rates.

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₹200Cr+

Ad spend managed

Janardhan Nagaiahgari

Built by an operator · Founder, Janardhan Digital

100%

Client-side & private

₹200Cr+

Managed ad spend

0₹

Always free

Instant

Calculations & Verdicts

Email Delivered Unique Open Rate Calculator

Calculate your subscriber read rate. Everything runs locally in your browser.

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