Why most blue light glasses miss the mark

Preview text: It's not that they don't work. It's that they filter the wrong wavelength. Let's connect!…

Friday, May 29, 2026 at 11:02 AM EasternKlaviyo

Felix GrayWhy most blue light glasses miss the mark

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Subject: Why most blue light glasses miss the mark
Preview text: It's not that they don't work. It's that they filter the wrong wavelength. Let's connect!…
From: hello@email.felixgray.com
Brand: Felix Gray
ESP: Klaviyo
Sent: Fri May 29, 2026, 11:02 AM ET
Sent to: felixgray.com
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Subject length: 41 characters

Against Felix Gray's usual

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