Brain Fog - what causes it? 🧠
Preview text: The surprising truth behind those afternoon lulls...

Using this email in an article? Credit: Luff Sleep email via They Sent It, with a link to this page. Full-size image
- Subject
- Brain Fog - what causes it? 🧠
- Preview text
- The surprising truth behind those afternoon lulls...
- From
- hello@
luffsleep.co.uk - Brand
- Luff Sleep
- ESP
- Klaviyo
- Sent
- Wed Oct 21, 2026, 4:46 AM ET
- Sent to
- fluffsleep.com, luffhealth.com, United Kingdom (luffsleep.co.uk), luffsleep.com
- Size
- 41 KB
- Images
- 12
- Links
- 9, 1 of them buttons
- Subject length
- 29 characters
Against Luff Sleep's usual
Sent in the 4 AM hour, which holds 6% of its emails; 12% arrive in the 12 AM hour. The subject is 29 characters; its average is 35.
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
- Luff Sleep <[email protected]>
- Subject
- Brain Fog - what causes it? 🧠
- Date
- Wed, 21 Oct 2026 08:46:00 +0000
- Message-ID domain
- klaviyomail.com
- Return-Path domain
- k3.send.luffsleep.co.uk
- DKIM signature
- d=shared.klaviyomail.com s=def1; d=send.luffsleep.co.uk s=mtd1
- List-Unsubscribe
- Present, one-click
Servers it passed through, newest first
- from (unnamed) by kmta-mta-blue-….servers.clovesoftware.com with SMTP
Other sending headers (names only): X-Mailer-Info-Extra2, X-Mailer-Info, X-Mailer-Info-Extra, X-Kmail-Account, X-Kmail-Message, X-Kmail-Ops, X-Report-Abuse
Sent just before and after
| Oct 31, 2026 3:38 PM | We Saw You Looking | |
| Oct 24, 2026 5:30 AM | An extra hour in bed? Now that’s Luff-ly | |
| Oct 23, 2026 11:46 PM | Helping others sleep safer, every night | |
| Oct 21, 2026 4:46 AM | Brain Fog - what causes it? 🧠 (this email) | |
| Oct 20, 2026 11:45 PM | Sleep isn’t a luxury. It’s your life support system. | |
| Oct 17, 2026 11:44 PM | “This is the best mattress I’ve ever used” | |
| Oct 15, 2026 11:43 PM | Turn your bed into a hotel suite |
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Helping others sleep safer, every night
Oct 23, 2026 11:46 PM
Sleep isn’t a luxury. It’s your life support system.
Oct 20, 2026 11:45 PM
“This is the best mattress I’ve ever used”
Oct 17, 2026 11:44 PM
Sent the same day by similar brands
Same ESP and the closest weekly volume, sent on Oct 21, 2026.










