20% Off everything. Yes Everything.
Preview text: One code, the whole site, subscriptions not included.

Using this email in an article? Credit: Proto-col email via They Sent It, with a link to this page. Full-size image
- Subject
- 20% Off everything. Yes Everything.
- Preview text
- One code, the whole site, subscriptions not included.
- From
- hello@
proto-col.com - Brand
- Proto-col
- ESP
- Klaviyo
- Sent
- Fri Sep 25, 2026, 5:00 AM ET
- Sent to
- United Kingdom (proto-col.co.uk), proto-col.com
- Size
- 74 KB
- Images
- 17
- Links
- 25, 10 of them buttons
- Subject length
- 35 characters
Against Proto-col's usual
Sent in its busiest hour, 5 AM, which holds 43% of its emails. The subject is 35 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
- 20% Off everything. Yes Everything.
- Date
- Fri, 25 Sep 2026 09:00:25 +0000 (UTC)
- Message-ID domain
- geopod-ismtpd-16
- 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-…-lhqsv with SMTP
- from (unnamed) by geopod-ismtpd-16 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
| Oct 1, 2026 5:00 AM | Offer of the week: | |
| Sep 30, 2026 10:46 AM | We've saved these for you! | |
| Sep 30, 2026 5:00 AM | Save £16.47 a month, whichever collagen you choose | |
| Sep 25, 2026 5:00 AM | 20% Off everything. Yes Everything. (this email) | |
| Sep 24, 2026 5:30 AM | Daily turmeric, with a little more behind it 🫚 | |
| Sep 21, 2026 5:00 AM | Offer of the week! | |
| Sep 17, 2026 5:30 AM | Over 6,700 5 Star Reviews on & counting |
More from Proto-col
All Proto-col emailsYour saved products are about to expire!
Nov 2, 2026 7:47 AM
Nov 1, 2026 9:47 AM
Cushion your knees, hips and shoulders
Nov 1, 2026 4:01 AM
Your discount is about to expire!
Oct 27, 2026 7:04 PM
Your saved products are about to expire!
Oct 25, 2026 10:09 PM
Oct 25, 2026 12:09 AM
Discover how we're making a difference...
Oct 24, 2026 7:03 PM
Oct 22, 2026 6:47 AM







