What percentage of all emails are opened on mobile devices?
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Correct answer: 40-50%.
Why this is the answer
The correct answer is 40-50%. Industry statistics consistently show that a significant portion of emails are opened on mobile devices. This highlights the critical importance of designing emails with a mobile-first or responsive approach to ensure optimal readability and engagement. Less than 10% is far too low, as mobile usage for email has been prevalent for many years. More than 90% is too high; while mobile is dominant, desktop and webmail clients still account for a substantial share of email opens.
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