"This is the best collagen I’ve used yet."
Preview text: Buy one get one free on capsules and gels
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- Subject
- "This is the best collagen I’ve used yet."
- Preview text
- Buy one get one free on capsules and gels
- From
- hello@
proto-col.com - Brand
- Proto-col
- ESP
- Klaviyo
- Sent
- Thu Jun 11, 2026, 5:00 AM ET
- Sent to
- United Kingdom (proto-col.co.uk), proto-col.com
- Size
- 71 KB
- Images
- 17
- Links
- 22, 10 of them buttons
- Subject length
- 44 characters
Against Proto-col's usual
Sent in its busiest hour, 5 AM, which holds 43% of its emails. The subject is 44 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
- "This is the best collagen I’ve used yet."
- Date
- Thu, 11 Jun 2026 09:00:14 +0000 (UTC)
- Message-ID domain
- geopod-ismtpd-82
- 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
- from o1280.shared.klaviyomail.com [167.89.72.22] by our receiving server with ESMTPS
- by recvd-…-d6qhn with SMTP
- from (unnamed) by geopod-ismtpd-82 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
| Jun 14, 2026 11:03 AM | Your saved products are about to expire! | |
| Jun 13, 2026 1:04 PM | We've saved these for you! | |
| Jun 13, 2026 5:00 AM | Your Skin is Telling You More Than You Might Think | |
| Jun 11, 2026 5:00 AM | "This is the best collagen I’ve used yet." (this email) | |
| Jun 9, 2026 12:00 PM | Movement should feel like yours again | |
| Jun 6, 2026 11:36 AM | Your saved products are about to expire! | |
| Jun 6, 2026 5:00 AM | Confidence Starts with Healthy Hair! |
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