The 450 nanometer LED problem
Preview text: One colour of light is behind it (blue)

Using this email in an article? Credit: Headlight Glasses email via They Sent It, with a link to this page. Full-size image
- Subject
- The 450 nanometer LED problem
- Preview text
- One colour of light is behind it (blue)
- From
- support@
headlightglasses.com - Brand
- Headlight Glasses
- ESP
- Klaviyo
- Sent
- Sun Nov 8, 2026, 8:00 PM ET
- Sent to
- United Kingdom (headlightglasses.co.uk), headlightglasses.com
- Size
- 38 KB
- Images
- 4
- Links
- 5, 2 of them buttons
- Subject length
- 29 characters
Against Headlight Glasses's usual
Sent in its busiest hour, 8 PM, which holds 63% of its emails. The subject is 29 characters; its average is 31.
Sent just before and after
| Nov 8, 2026 8:00 PM | The 450 nanometer LED problem (this email) | |
| Nov 7, 2026 8:00 PM | Containment | |
| Nov 7, 2026 8:00 PM | Containment | |
| Nov 6, 2026 8:00 PM | Yellow night glasses didn't work? | |
| Nov 5, 2026 8:00 PM | The unlock to accepting change | |
| Nov 5, 2026 8:00 PM | The unlock to accepting change | |
| Nov 4, 2026 8:01 PM | Rainy night + astigmatism = this |
More from Headlight Glasses
All Headlight Glasses emailsNov 7, 2026 8:00 PM
Nov 7, 2026 8:00 PM
Yellow night glasses didn't work?
Nov 6, 2026 8:00 PM
The unlock to accepting change
Nov 5, 2026 8:00 PM
The unlock to accepting change
Nov 5, 2026 8:00 PM
Rainy night + astigmatism = this
Nov 4, 2026 8:01 PM
Nov 3, 2026 8:02 PM
Nov 3, 2026 8:02 PM
Sent the same day by similar brands
Same ESP and the closest weekly volume, sent on Nov 8, 2026.














