6,700+ five-star reviews can't be wrong.
Preview text: See why customers keep coming back, and enjoy 40% off until 4pm Wednesday!

Using this email in an article? Credit: Proto-col email via They Sent It, with a link to this page. Full-size image
- Subject
- 6,700+ five-star reviews can't be wrong.
- Preview text
- See why customers keep coming back, and enjoy 40% off until 4pm Wednesday!
- From
- hello@
proto-col.com - Brand
- Proto-col
- ESP
- Klaviyo
- Sent
- Mon Aug 31, 2026, 4:00 AM ET
- Sent to
- United Kingdom (proto-col.co.uk), proto-col.com
- Size
- 44 KB
- Images
- 11
- Links
- 12, 6 of them buttons
- Subject length
- 40 characters
Against Proto-col's usual
Sent in the 4 AM hour, which holds 5% of its emails; 43% arrive in the 5 AM hour. The subject is 40 characters; its average is 38.
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
- Proto-col <[email protected]>
- Subject
- 6,700+ five-star reviews can't be wrong.
- Date
- Mon, 31 Aug 2026 08:00:25 +0000 (UTC)
- Message-ID domain
- geopod-ismtpd-86
- Return-Path domain
- engage.proto-col.com
- DKIM signature
- d=proto-col.com s=kl2
- List-Unsubscribe
- Present, one-click
Servers it passed through, newest first
- by recvd-…-xdx6n with SMTP
- from (unnamed) by geopod-ismtpd-86 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 13, 2026 12:30 PM | Save on 3 months of glowing skin & smoother joints | |
| Sep 8, 2026 5:30 AM | On GLP-1? Make every bite count. | |
| Sep 2, 2026 4:02 AM | Last chance: 40% off our birthday sale | |
| Aug 31, 2026 4:00 AM | 6,700+ five-star reviews can't be wrong. (this email) | |
| Aug 28, 2026 11:30 AM | It's our birthday! 🎉 Enjoy 40% off everything! | |
| Aug 25, 2026 6:39 AM | Your saved products are about to expire! | |
| Aug 24, 2026 8:37 AM | We've saved these for you! |
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Sent the same day by similar brands
Same ESP and the closest weekly volume, sent on Aug 31, 2026.









