50% off a routine upgrade ends TODAY!

Preview text: Take care of you now.

Proto-colTuesday, May 26, 2026 at 3:00 AM EasternKlaviyo
Proto-col50% off a routine upgrade ends TODAY!
Subject
50% off a routine upgrade ends TODAY!
Preview text
Take care of you now.
From
hello@proto-col.com
Sent
Tue May 26, 2026, 3:00 AM ET
Sent to
United Kingdom (proto-col.co.uk), proto-col.com
Size
76 KB
Images
18
Links
24, 11 of them buttons
Subject length
37 characters

Against Proto-col's usual

Sent in the 3 AM hour, which holds 3% of its emails; 43% arrive in the 5 AM hour. The subject is 37 characters; its average is 38.

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From
Proto-col <[email protected]>
Subject
50% off a routine upgrade ends TODAY!
Date
Tue, 26 May 2026 07:00:19 +0000 (UTC)
Message-ID domain
geopod-ismtpd-26
Return-Path domain
engage.proto-col.com
DKIM signature
d=proto-col.com s=kl2
List-Unsubscribe
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Servers it passed through, newest first

  1. from o1280.shared.klaviyomail.com [167.89.72.22] by our receiving server with ESMTPS
  2. by recvd-…-h9tk9 with SMTP
  3. from (unnamed) by geopod-ismtpd-26 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

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Sent just before and after

Jun 5, 2026 5:00 AMWhere your collagen comes from matters
May 30, 2026 5:00 AMAre you taking the right collagen for your goal?
May 28, 2026 12:00 PMUnlock your energy with hydration
May 26, 2026 3:00 AM50% off a routine upgrade ends TODAY! (this email)
May 25, 2026 5:00 AMYour 50% off ends tomorrow!
May 22, 2026 5:30 AMYour routine, upgraded. 50% off for this weekend only.
May 19, 2026 12:00 PMWhat your hair is trying to tell you

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