What red light does to aging eyes
Preview text: Here's the science behind a 3-minute exposure
Using this email in an article? Credit: Ra Optics email via They Sent It, with a link to this page. Full-size image
- Subject
- What red light does to aging eyes
- Preview text
- Here's the science behind a 3-minute exposure
- From
- support@
raoptics.com - Brand
- Ra Optics
- ESP
- Klaviyo
- Sent
- Tue Sep 15, 2026, 10:31 AM ET
- Sent to
- raoptics.com, raoptics.io
- Size
- 39 KB
- Images
- 8
- Links
- 12, 6 of them buttons
- Subject length
- 33 characters
Against Ra Optics's usual
Sent in its busiest hour, 10 AM, which holds 15% of its emails. The subject is 33 characters; its average is 38.
Email headers
What the brand's servers put on this email. Our receiving servers, the address we subscribed with and unsubscribe links are left out.
- From
- Ra Optics <[email protected]>
- Subject
- What red light does to aging eyes
- Date
- Tue, 15 Sep 2026 14:31:04 +0000 (UTC)
- Message-ID domain
- geopod-ismtpd-25
- Return-Path domain
- hello.raoptics.com
- DKIM signature
- d=raoptics.com s=kl2
- List-Unsubscribe
- Present, one-click
Servers it passed through, newest first
- by recvd-…-6l8zb with SMTP
- from (unnamed) by geopod-ismtpd-25 with HTTP
Other sending headers (names only): X-Kmail-Account, X-Kmail-Message, X-Kmail-Ops, X-Report-Abuse, X-SG-EID, X-SG-ID, X-Entity-ID
Sent just before and after
| Sep 19, 2026 11:30 AM | How fast will you fall asleep? | |
| Sep 17, 2026 9:02 AM | Ra Optics Bestsellers: What the community bought most this quarter | |
| Sep 16, 2026 4:31 AM | Elite athletes upgraded. Your turn. | |
| Sep 15, 2026 10:31 AM | What red light does to aging eyes (this email) | |
| Sep 14, 2026 4:30 AM | Engineered for Perfection | |
| Sep 12, 2026 10:30 AM | An experiment for 14 nights 🌙 | |
| Sep 10, 2026 12:02 PM | Did you buy the cheap version first? |
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Sent the same day by similar brands
Same ESP and the closest weekly volume, sent on Sep 15, 2026.
