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Email Send Time Optimiser

Recommend the best send time for your audience by geo, day of week and content type.

Klaviyo Mailchimp Any ESP
Recommended send times
Tuesday 10am ET
Thursday 2pm ET
Sunday 7pm ET

B2C US promos peak on mid-week mornings and Sunday-evening pre-week planning.

Use as starting point, not gospel: your audience's actual send-time response is in your ESP analytics. Test the recommended windows for 4-6 weeks, then optimise from there. Klaviyo and Mailchimp both offer Smart Send Time that uses per-subscriber engagement data — worth enabling once you have 90 days of history.

About this tool

Best send times vary massively by audience and content type. This tool gives recommendations based on industry benchmarks: B2C vs B2B, geo (US/EU/AU), day of week, and content type (promo / newsletter / abandoned cart).

When to trust per-subscriber optimisation

Klaviyo Smart Send Time and Mailchimp Optimal Time both work — but only after they have 90+ days of engagement history per subscriber. Use the static recommendations from this tool while you build that history.

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