They Sent It

Boost Your Performance

Try this instead of pre workout

Hard To Kill FitnessFriday, Oct 9, 2026 at 1:04 PM EasternKlaviyo
Hard To Kill FitnessBoost Your Performance
Subject
Boost Your Performance
Preview text
Try this instead of pre workout
From
support@hardtokillfitness.co
Sent
Fri Oct 9, 2026, 1:04 PM ET
Size
17 KB
Images
1
Links
3
Subject length
22 characters

Against Hard To Kill Fitness's usual

Sent in the 1 PM hour, which holds 10% of its emails; 36% arrive in the 10 AM hour. The subject is 22 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
Boost Your Performance
Date
Fri, 09 Oct 2026 17:04:57 +0000 (UTC)
Message-ID domain
geopod-ismtpd-94
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-…-l5wjq with SMTP
  2. from (unnamed) by geopod-ismtpd-94 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

Oct 21, 2026 1:15 PMReady to become Hard To Kill?
Oct 20, 2026 10:04 AMFive ways to drop your run time (most guys do zero)
Oct 12, 2026 10:06 AM3 quick high impact workouts 🔥
Oct 9, 2026 1:04 PMBoost Your Performance (this email)
Oct 6, 2026 10:01 AMWe Did It 💪
Sep 28, 2026 6:03 PMAre you doing this wrong?? 👀
Sep 21, 2026 10:00 AMMotivation Unlocked 🔑

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.