Last chance: 40% off our birthday sale

Preview text: Our 23rd birthday flash sale ends 2 September at 4pm.

Proto-colWednesday, Sep 2, 2026 at 4:02 AM EasternKlaviyo
Proto-colLast chance: 40% off our birthday sale
Subject
Last chance: 40% off our birthday sale
Preview text
Our 23rd birthday flash sale ends 2 September at 4pm.
From
hello@proto-col.com
Sent
Wed Sep 2, 2026, 4:02 AM ET
Sent to
United Kingdom (proto-col.co.uk), proto-col.com
Size
46 KB
Images
15
Links
16, 6 of them buttons
Subject length
38 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 38 characters, the same as its average.

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
Last chance: 40% off our birthday sale
Date
Wed, 02 Sep 2026 08:02:56 +0000 (UTC)
Message-ID domain
geopod-ismtpd-78
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

  1. by recvd-…-k6gzq with SMTP
  2. from (unnamed) by geopod-ismtpd-78 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

Report this email

Sent just before and after

Sep 16, 2026 5:30 AMWhy your supplementation hasn't 'kicked in' yet.
Sep 13, 2026 12:30 PMSave on 3 months of glowing skin & smoother joints
Sep 8, 2026 5:30 AMOn GLP-1? Make every bite count.
Sep 2, 2026 4:02 AMLast chance: 40% off our birthday sale (this email)
Aug 31, 2026 4:00 AM6,700+ five-star reviews can't be wrong.
Aug 28, 2026 11:30 AMIt's our birthday! 🎉 Enjoy 40% off everything!
Aug 25, 2026 6:39 AMYour saved products are about to expire!

More from Proto-col

All Proto-col emails

Get the Black Friday insights

We're collecting every Black Friday email from more than 50,000 brands as it lands. Get what we find: who starts first, the biggest discounts, and the subject lines that stand out.

Free. Unsubscribe anytime.