Sleep syncing? Your mattress matters.
Preview text: The one viral sleep trend doctors actually endorse needs a foundation that works.

Using this email in an article? Credit: Sonno email via They Sent It, with a link to this page. Full-size image
- Subject
- Sleep syncing? Your mattress matters.
- Preview text
- The one viral sleep trend doctors actually endorse needs a foundation that works.
- From
- info@
sleepsonno.com - Brand
- Sonno
- ESP
- Klaviyo
- Sent
- Sat Sep 5, 2026, 7:00 AM ET
- Size
- 72 KB
- Images
- 13
- Links
- 25, 3 of them buttons
- Subject length
- 37 characters
Against Sonno's usual
Sent in the 7 AM hour, which holds 3% of its emails; 35% arrive in the 6 AM hour. The subject is 37 characters; its average is 44.
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
- Sonno <[email protected]>
- Reply-To
- [email protected]
- Subject
- Sleep syncing? Your mattress matters.
- Date
- Sat, 05 Sep 2026 11:00:02 +0000 (UTC)
- Message-ID domain
- geopod-ismtpd-21
- Return-Path domain
- send.sleepsonno.com
- DKIM signature
- d=sleepsonno.com s=kl2
- List-Unsubscribe
- Present, one-click
Servers it passed through, newest first
- by recvd-…-wr9n2 with SMTP
- from (unnamed) by geopod-ismtpd-21 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
| Sep 14, 2026 6:01 AM | The most underrated pick in the whole "sleepmaxxing" trend. | |
| Sep 11, 2026 4:02 AM | Is your feed ruining your sleep routine? | |
| Sep 8, 2026 6:01 AM | Better Sleep Starts with Better Bedding 🛌 | |
| Sep 5, 2026 7:00 AM | Sleep syncing? Your mattress matters. (this email) | |
| Sep 3, 2026 7:01 AM | Sleep Syncing is trending - and it starts with what you sleep on | |
| Aug 31, 2026 2:00 AM | Selamat Hari Merdeka, from all of us at Sonno | |
| Aug 27, 2026 5:00 AM | One Sofa. Two Functions. Zero Compromise. |
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Sent the same day by similar brands
Same ESP and the closest weekly volume, sent on Sep 5, 2026.









