164 lasers got hot

Preview text: The hardest engineering problem wasn't the light. It was the heat.

Tuesday, Jul 21, 2026 at 10:02 AM EasternKlaviyo

Erythroslight164 lasers got hot

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Subject: 164 lasers got hot
Preview text: The hardest engineering problem wasn't the light. It was the heat.
From: hello@erythroslight.com
Brand: Erythroslight
ESP: Klaviyo
Sent: Tue Jul 21, 2026, 10:02 AM ET
Size: 34 KB
Images: 7
Links: 7, 1 of them buttons
Subject length: 18 characters

Against Erythroslight's usual

Sent in the 10 AM hour, which holds 4% of its emails; 23% arrive in the 12 PM hour. The subject is 18 characters; its average is 28.

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