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Free Tools Email Subject Line Open Rate Predictor

Compare subject line variations before you send.

This tool uses nearly a decade of hospitality (resort, hotel, tour operator, DMO, etc.) emails to predict how well a subject line might perform in a marketing email. Each subject line is given a score (0-100) based on past performance of emails with similar wording and formatting.

Email Address   You'll only need to enter this once.
Subject Line Variation #1

Subject Line Variation #2

Subject Line Variation #3

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Questions? Talk to a friendly Inntopian.

Whether you're just curious or want a closer look, we'd be happy to help.

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