Save on 3 months of glowing skin & smoother joints
Preview text: Make consistency easier with savings across our collagen bundles.

Use this example
- Subject
- Save on 3 months of glowing skin & smoother joints
- Preview text
- Make consistency easier with savings across our collagen bundles.
- From
- hello@
proto-col.com - Brand
- Proto-col
- ESP
- Klaviyo
- Sent
- Sun Sep 13, 2026, 12:30 PM ET
- Sent to
- United Kingdom (proto-col.co.uk), proto-col.com
- Size
- 70 KB
- Images
- 14
- Links
- 18, 9 of them buttons
- Subject length
- 50 characters
Against Proto-col's usual
Sent in the 12 PM hour, which holds 18% of its emails; 43% arrive in the 5 AM hour. The subject is 50 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
- Save on 3 months of glowing skin & smoother joints
- Date
- Sun, 13 Sep 2026 16:30:21 +0000 (UTC)
- Message-ID domain
- geopod-ismtpd-28
- 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-canary-…-sdxj8 with SMTP
- from (unnamed) by geopod-ismtpd-28 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 21, 2026 5:00 AM | Offer of the week! | |
| Sep 17, 2026 5:30 AM | Over 6,700 5 Star Reviews on & counting | |
| Sep 16, 2026 5:30 AM | Why your supplementation hasn't 'kicked in' yet. | |
| Sep 13, 2026 12:30 PM | Save on 3 months of glowing skin & smoother joints (this email) | |
| 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. |
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Same ESP and the closest weekly volume, sent on Sep 13, 2026.








