Email Open Rate Calculator
Measure campaign visibility, delivery quality, click-to-open engagement and improvement upside from your email sends.
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Apple Mail Privacy Protection and image-blocking can distort opens, so pair open rate with clicks and conversions.
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Estimate how extra opens change engagement without changing the main result.
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Email open rate is usually calculated as unique opens divided by delivered emails, multiplied by 100. Delivered emails are sent emails minus bounced emails.
It depends on the audience and campaign type. This tool treats 15–30% as a generally healthy range, while very high rates can be normal for small active lists or automations but should be checked for tracking distortion.
Open rate reflects subject line, sender trust and deliverability. CTOR shows whether people who opened were motivated to click, making it a stronger content-engagement signal.
Results are estimates generated locally in your browser from the numbers you enter. Email opens can be affected by privacy features, bot activity, image loading, list hygiene and ESP tracking rules. Use this calculator for planning and diagnostics, not as a guaranteed measure of human attention or revenue impact. VisionVix accepts no liability for decisions based on this output.