This ONE thing could be sabotaging your progress...

Preview text: 3 tips to help

Hard To Kill FitnessThursday, Aug 20, 2026 at 7:02 PM EasternKlaviyo
Hard To Kill FitnessThis ONE thing could be sabotaging your progress...
Subject
This ONE thing could be sabotaging your progress...
Preview text
3 tips to help
From
support@hardtokillfitness.co
Sent
Thu Aug 20, 2026, 7:02 PM ET
Size
49 KB
Images
3
Links
8, 1 of them buttons
Subject length
51 characters

Against Hard To Kill Fitness's usual

Sent in the 7 PM hour, which holds 6% of its emails; 36% arrive in the 10 AM hour. The subject is 51 characters; its average is 28.

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
Hard To Kill Fitness <[email protected]>
Subject
This ONE thing could be sabotaging your progress...
Date
Thu, 20 Aug 2026 23:02:16 +0000 (UTC)
Message-ID domain
geopod-ismtpd-14
Return-Path domain
send.hardtokillfitness.co
DKIM signature
d=hardtokillfitness.co s=kl2
List-Unsubscribe
Present, one-click

Servers it passed through, newest first

  1. by recvd-…-q8c8s with SMTP
  2. from (unnamed) by geopod-ismtpd-14 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 1, 2026 10:02 AMATTN: Your Team Needs You...
Aug 28, 2026 10:05 AMStop Optimizing. Start Suffering.
Aug 25, 2026 8:03 AMYour workout partner just became your secret weapon
Aug 20, 2026 7:02 PMThis ONE thing could be sabotaging your progress... (this email)
Aug 17, 2026 10:07 AMMost "hybrid" programs aren't actually hybrid
Aug 12, 2026 1:01 PMDon't Fall Into This Trap
Aug 10, 2026 8:02 AMThe way you talk to yourself...

More from Hard To Kill Fitness

All Hard To Kill Fitness 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. You'll get a confirmation email first, and you can unsubscribe anytime.