people · May 20, 2026
Omnisend Study Analyzes 26 Billion Marketing Emails for Optimal Send Days
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Omnisend published analysis of 26 billion marketing emails on May 14, 2026, identifying Tuesday as the best day for top-of-funnel awareness campaigns with a 31.27% open rate and 0.81% click-to-send rate. Friday achieved the highest conversion rate of 0.081% and highest send volume of 4.51 billion emails. Saturday recorded the lowest metrics with 0.68% click-to-send rate, 0.058% conversion rate, and 3.14 billion sends. Sunday showed strong performance including a 33.69% open rate at 11 a.m.
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