The Invisible thief of your REM sleep
Preview text: Why silence isn't always quiet
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Use this example
- Subject
- The Invisible thief of your REM sleep
- Preview text
- Why silence isn't always quiet
- From
- andrew@
sleepphones.com - Brand
- SleepPhones
- ESP
- Klaviyo
- Sent
- Tue Sep 22, 2026, 11:41 AM ET
- Sent to
- sleepphones.com
- Size
- 35 KB
- Images
- 7
- Links
- 8, 6 of them buttons
- Subject length
- 37 characters
Against SleepPhones's usual
Sent in the 11 AM hour, which holds 11% of its emails; 39% arrive in the 10 AM hour. The subject is 37 characters; its average is 32.
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
- SleepPhones® <[email protected]>
- Subject
- The Invisible thief of your REM sleep
- Date
- Tue, 22 Sep 2026 15:41:43 +0000 (UTC)
- Message-ID domain
- geopod-ismtpd-57
- Return-Path domain
- send.sleepphones.com
- DKIM signature
- d=sleepphones.com s=kl2
- List-Unsubscribe
- Present, one-click
Servers it passed through, newest first
- by recvd-…-vrhtm with SMTP
- from (unnamed) by geopod-ismtpd-57 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
| Oct 6, 2026 10:41 AM | One Size Doesn't Fit All (especially for sleep) · Resent | |
| Sep 29, 2026 10:44 AM | One Size Doesn't Fit All (especially for sleep) | |
| Sep 29, 2026 10:42 AM | Which Sleeper Are You? | |
| Sep 22, 2026 11:41 AM | The Invisible thief of your REM sleep (this email) | |
| Sep 22, 2026 10:41 AM | Why Silence Isn't Always Quiet | |
| Sep 14, 2026 10:47 AM | A quick hello (and a question about your sleep) | |
| Aug 4, 2026 10:05 AM | Back-to-School Reset 📚 |
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