For Ballplayers: Build Bat Speed Like the Pros

Preview text: All-Star Brendan Donovan trusts Stack Baseball for his speed training. Get one for young…

The Stack SystemFriday, Apr 17, 2026 at 11:30 AM EasternKlaviyo
The Stack SystemFor Ballplayers: Build Bat Speed Like the Pros
Subject
For Ballplayers: Build Bat Speed Like the Pros
Preview text
All-Star Brendan Donovan trusts Stack Baseball for his speed training. Get one for young…
From
info@thestacksystem.com
Sent
Fri Apr 17, 2026, 11:30 AM ET
Size
46 KB
Images
7
Links
9, 3 of them buttons
Subject length
46 characters

Against The Stack System's usual

Sent in its busiest hour, 11 AM, which holds 40% of its emails. The subject is 46 characters; its average is 34.

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
Stack Baseball <[email protected]>
Subject
For Ballplayers: Build Bat Speed Like the Pros
Date
Fri, 17 Apr 2026 15:30:41 +0000
Message-ID domain
klaviyomail.com
Return-Path domain
k3.send.thestacksystem.com
DKIM signature
d=shared.klaviyomail.com s=def1; d=send.thestacksystem.com s=mtd1
List-Unsubscribe
Present, one-click

Servers it passed through, newest first

  1. from kl-203-16-15.kmta.shared.klaviyomail.com [170.203.16.15] by our receiving server with ESMTPS
  2. from (unnamed) by kmta-mta-blue-….servers.clovesoftware.com with SMTP

Other sending headers (names only): X-Mailer-Info-Extra2, X-Mailer-Info, X-Mailer-Info-Extra, X-Kmail-Account, X-Kmail-Message, X-Kmail-Ops, X-Report-Abuse

Report this email

Sent just before and after

Apr 27, 2026 11:32 AMFitz Stacks Another Win
Apr 24, 2026 11:15 AMDon't Leave Any Speed on the Table
Apr 20, 2026 4:46 PMFitz Wins Again at the RBC
Apr 17, 2026 11:30 AMFor Ballplayers: Build Bat Speed Like the Pros (this email)
Apr 12, 2026 3:45 PMLast Chance for a Free Masters Gift! 🌸 🟢
Apr 10, 2026 1:01 PMFREE Shipping + Limited Edition Gift 🌸 🟢
Apr 6, 2026 11:02 AMSeasonal Circuit Has Arrived!

More from The Stack System

All The Stack System 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.