Days got shorter. Your clock noticed.
Preview text: Days got shorter. Your clock noticed. 96 Less daylight confuses your master clock. Knowing…

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- Subject
- Days got shorter. Your clock noticed.
- Preview text
- Days got shorter. Your clock noticed. 96 Less daylight confuses your master clock. Knowing…
- From
- info@
send.sleepdoctor.com - Brand
- Sleep Doctor
- ESP
- Klaviyo
- Sent
- Sun Oct 4, 2026, 9:00 AM ET
- Sent to
- americansleepassociation.net, singularsleep.com, sleepassociation.com, sleepassociation.info, sleepdoctor.com, sleepdoctorpm.com, thepowerofwhenquiz.com, thesleepdoctor.com
- Size
- 110 KB
- Images
- 17
- Links
- 39, 6 of them buttons
- Subject length
- 37 characters
Against Sleep Doctor's usual
Sent in its busiest hour, 9 AM, which holds 23% of its emails. The subject is 37 characters, the same as its average.
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
- Sleep Doctor <[email protected]>
- Reply-To
- Sleep Doctor <[email protected]>
- Subject
- Days got shorter. Your clock noticed.
- Date
- Sun, 04 Oct 2026 13:00:03 +0000
- Message-ID domain
- cio151267.send.sleepdoctor.com
- Return-Path domain
- cio151267.send.sleepdoctor.com
- DKIM signature
- d=cio151267.send.sleepdoctor.com s=cio
- List-Unsubscribe
- Present, one-click
- Mailer
- Customer.io (…; +https://whatis.customeriomail.com)
Servers it passed through, newest first
- by … with HTTP
Other sending headers (names only): X-Mailgun-Sid, X-Mailgun-Sending-Ip, X-Mailgun-Dkim, X-Mailgun-Native-Send, X-Mailgun-Track-Clicks, X-Mailgun-Track-Opens, X-Report-Abuse-To, X-Mailgun-Variables
Sent just before and after
| Oct 8, 2026 9:00 AM | Special offer on CPAP machines. Yes, all of them. | |
| Oct 7, 2026 9:30 AM | When menopause keeps the whole bed awake | |
| Oct 5, 2026 9:30 AM | How much does a home sleep test cost? | |
| Oct 4, 2026 9:00 AM | Days got shorter. Your clock noticed. (this email) | |
| Oct 1, 2026 9:30 AM | Sore neck? Meet your new pillow | |
| Sep 30, 2026 9:30 AM | September's most-loved picks ⭐ | |
| Sep 28, 2026 9:30 AM | 8 signs it might be sleep apnea |
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Sent the same day by similar brands
Same ESP and the closest weekly volume, sent on Oct 4, 2026.













