You're invited: The Nutrition of Light — free webinar this Saturday

Preview text: Email 96 Join Matt and Dr. Catherine Clinton for a free live event on light, biology, and…

Ra OpticsTuesday, Apr 21, 2026 at 12:32 PM EasternKlaviyo
Ra OpticsYou're invited: The Nutrition of Light — free webinar this Saturday
Subject
You're invited: The Nutrition of Light — free webinar this Saturday
Preview text
Email 96 Join Matt and Dr. Catherine Clinton for a free live event on light, biology, and…
From
support@raoptics.com
Sent
Tue Apr 21, 2026, 12:32 PM ET
Sent to
raoptics.com, raoptics.io
Size
49 KB
Images
14
Links
16, 2 of them buttons
Subject length
69 characters

Against Ra Optics's usual

Sent in the 12 PM hour, which holds 6% of its emails; 16% arrive in the 10 AM hour. The subject is 69 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
You're invited: The Nutrition of Light — free webinar this Saturday
Date
Tue, 21 Apr 2026 16:32:02 +0000 (UTC)
Message-ID domain
geopod-ismtpd-17
Return-Path domain
hello.raoptics.com
DKIM signature
d=raoptics.com s=kl2
List-Unsubscribe
Present, one-click

Servers it passed through, newest first

  1. from o1283.shared.klaviyomail.com [167.89.72.26] by our receiving server with ESMTPS
  2. by recvd-…-7qgzz with SMTP
  3. from (unnamed) by geopod-ismtpd-17 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

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Sent just before and after

May 1, 2026 1:14 PMEngineered for Perfection
Apr 30, 2026 4:10 AMYour body will thank you.
Apr 27, 2026 3:00 PMYou spend 90% of your life under harmful light.
Apr 21, 2026 12:32 PMYou're invited: The Nutrition of Light — free webinar this Saturday (this email)
Apr 18, 2026 12:30 PMYour metabolism has a light problem 
Apr 16, 2026 7:50 AMEngineered for Perfection
Apr 15, 2026 7:50 AMYour body will thank you.

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