The Stack System subject lines
86 subject lines averaging 34 characters.
| Picture | Sent (Eastern) | Subject | Characters | Preview text | |
|---|---|---|---|---|---|
| Oct 29, 2026 1:22 PM | Is One Arm Holding Back Your Speed? | 35 | What single-arm swings from 50,000+ golfers tell us about lead vs. trail arm speed. | Oct 29, 2026 1:22 PM · 35 characters. What single-arm swings from 50,000+ golfers tell us about lead vs. trail arm speed. | |
| Oct 29, 2026 4:04 AM | The Science of Speed Bonus: Effective Wedge Practice | 52 | What kind of wedge practice gives you the best results on the course? | Oct 29, 2026 4:04 AM · 52 characters. What kind of wedge practice gives you the best results on the course? | |
| Oct 27, 2026 2:59 PM | Baseball's Most Advanced Speed Training System | 46 | TheStack is the best way to gain bat speed. Built on science and backed by data, it… | Oct 27, 2026 2:59 PM · 46 characters. TheStack is the best way to gain bat speed. Built on science and backed by data, it… | |
| Oct 26, 2026 5:02 AM | The Science of Speed Bonus: Putt With Purpose | 45 | In this bonus lesson, learn what it really takes to be a good putter. | Oct 26, 2026 5:02 AM · 45 characters. In this bonus lesson, learn what it really takes to be a good putter. | |
| Oct 26, 2026 4:17 AM | Last Call on Early Stack Friday Deals! | 38 | Don't miss out on speed and distance gains! Save big on TheStack and Stack Radar today. | Oct 26, 2026 4:17 AM · 38 characters. Don't miss out on speed and distance gains! Save big on TheStack and Stack Radar today. | |
| Oct 23, 2026 3:03 AM | The Science of Speed: Concept #6 | 32 | How to Lose Balance Without Losing Control | Oct 23, 2026 3:03 AM · 32 characters. How to Lose Balance Without Losing Control | |
| Oct 22, 2026 12:38 PM | What Can TheStack Do For Your Game? | 35 | Don't leave any speed on the table. Shop our biggest deals before they’re gone. | Oct 22, 2026 12:38 PM · 35 characters. Don't leave any speed on the table. Shop our biggest deals before they’re gone. | |
| Oct 21, 2026 12:16 PM | The Science of Bat Speed Training | 33 | How does overload/overspeed training work and what makes TheStack so effective at helping… | Oct 21, 2026 12:16 PM · 33 characters. How does overload/overspeed training work and what makes TheStack so effective at helping… | |
| Oct 21, 2026 5:02 AM | The Science of Speed: Concept #5 | 32 | Swing Your Fastest With Sound Mechanics | Oct 21, 2026 5:02 AM · 32 characters. Swing Your Fastest With Sound Mechanics | |
| Oct 20, 2026 2:09 PM | The Philosophy Behind TheStack | 30 | The offseason is almost here! Watch Sasho's talk about what "percentage of max effort"… | Oct 20, 2026 2:09 PM · 30 characters. The offseason is almost here! Watch Sasho's talk about what "percentage of max effort"… | |
| Oct 19, 2026 12:38 PM | Train like a U.S. Open Champion | 31 | Matt Fitzpatrick gained 10+ mph with TheStack. How much will you gain? Shop Stack Friday… | Oct 19, 2026 12:38 PM · 31 characters. Matt Fitzpatrick gained 10+ mph with TheStack. How much will you gain? Shop Stack Friday… | |
| Oct 19, 2026 3:03 AM | The Science of Speed: Concept #4 | 32 | Is a Faster Backswing Right for You? | Oct 19, 2026 3:03 AM · 32 characters. Is a Faster Backswing Right for You? | |
| Oct 17, 2026 11:34 AM | Built on Science. Backed by Data. | 33 | Your early access deals are waiting: save up to $209 on golf's #1 speed training system. | Oct 17, 2026 11:34 AM · 33 characters. Your early access deals are waiting: save up to $209 on golf's #1 speed training system. | |
| Oct 17, 2026 4:03 AM | The Science of Speed: Concept #3 | 32 | Let Your Hands Lead to Faster Swings | Oct 17, 2026 4:03 AM · 32 characters. Let Your Hands Lead to Faster Swings | |
| Oct 16, 2026 12:33 PM | You've Unlocked Early Stack Friday Deals! | 41 | Your exclusive early access to TheStack's Black Friday deals. Don't miss out on the best… | Oct 16, 2026 12:33 PM · 41 characters. Your exclusive early access to TheStack's Black Friday deals. Don't miss out on the best… | |
| Oct 15, 2026 5:03 AM | The Science of Speed: Concept #2 | 32 | Swing Fast the Right Way | Oct 15, 2026 5:03 AM · 32 characters. Swing Fast the Right Way | |
| Oct 13, 2026 1:10 AM | The Science of Speed: Concept #1 | 32 | Help the Ground Push You Around | Oct 13, 2026 1:10 AM · 32 characters. Help the Ground Push You Around | |
| Oct 12, 2026 11:05 AM | TheStack Is Changing How Softball Players Train | 47 | TheStack Bat isn’t just for baseball. Softball players can benefit just as much from… | Oct 12, 2026 11:05 AM · 47 characters. TheStack Bat isn’t just for baseball. Softball players can benefit just as much from… | |
| Oct 8, 2026 12:43 PM | Join TheStack, Get a FREE Stack Tripod | 38 | We're throwing in a $69 magnetic golf tripod FREE with every purchase of a Stack or Stack… | Oct 8, 2026 12:43 PM · 38 characters. We're throwing in a $69 magnetic golf tripod FREE with every purchase of a Stack or Stack… | |
| Oct 6, 2026 11:46 AM | Get a FREE Golf Tripod with Stack Radar! | 40 | Seasonal Circuit Season 3 is underway! Pick up a Stack Radar to join the global wedge… | Oct 6, 2026 11:46 AM · 40 characters. Seasonal Circuit Season 3 is underway! Pick up a Stack Radar to join the global wedge… | |
| Sep 29, 2026 11:16 AM | Will You Make it to the Hall of Fame? | 37 | TheStack 10k Club Hall of Fame is reserved for the most dedicated golfers that have taken… | Sep 29, 2026 11:16 AM · 37 characters. TheStack 10k Club Hall of Fame is reserved for the most dedicated golfers that have taken… | |
| Sep 23, 2026 11:45 AM | TheStack Bat isn't just for the Pros | 36 | Bat speed is a trainable skill, and players of all ages are increasing their potential… | Sep 23, 2026 11:45 AM · 36 characters. Bat speed is a trainable skill, and players of all ages are increasing their potential… | |
| Sep 21, 2026 11:15 AM | What Can TheStack Do For Your Game? | 35 | You'd be surprised at how big a difference a little speed makes. With speed training… | Sep 21, 2026 11:15 AM · 35 characters. You'd be surprised at how big a difference a little speed makes. With speed training… | |
| Sep 18, 2026 11:04 AM | Smart Golfers Needs Smart Radars 🧠 | 34 | Stack Radar is an accurate launch monitor that transforms into a versatile, smart radar… | Sep 18, 2026 11:04 AM · 34 characters. Stack Radar is an accurate launch monitor that transforms into a versatile, smart radar… | |
| Sep 16, 2026 3:01 PM | It's Time to Set Goals and Start Stacking | 41 | The offseason is the best time to start gaining speed and distance for next year! Join… | Sep 16, 2026 3:01 PM · 41 characters. The offseason is the best time to start gaining speed and distance for next year! Join… | |
| Sep 11, 2026 12:16 PM | Join TheStack, Get a Little Extra | 33 | For a limited time, get a free caddy towel when you purchase TheStack, and a free club… | Sep 11, 2026 12:16 PM · 33 characters. For a limited time, get a free caddy towel when you purchase TheStack, and a free club… | |
| Sep 9, 2026 12:45 PM | Biohack Your Bat Speed | 22 | Unlock more power at the plate with TheStack's custom bat speed training. | Sep 9, 2026 12:45 PM · 22 characters. Unlock more power at the plate with TheStack's custom bat speed training. | |
| Sep 9, 2026 10:45 AM | Getting Started with TheStack is Easy | 37 | Check out this short video detailing a Baseline speed session from start to finish. | Sep 9, 2026 10:45 AM · 37 characters. Check out this short video detailing a Baseline speed session from start to finish. | |
| Sep 7, 2026 10:16 AM | Special Savings for Those Who Serve | 35 | Apply for exclusive discounts on TheStack and Stack Radar through TheStack Shield Program… | Sep 7, 2026 10:16 AM · 35 characters. Apply for exclusive discounts on TheStack and Stack Radar through TheStack Shield Program… | |
| Sep 4, 2026 10:51 AM | Seasonal Circuit Results Are In 🏆 | 33 | Congratulations to our top 3 performers and one lucky Stacker that took home 3 years of… | Sep 4, 2026 10:51 AM · 33 characters. Congratulations to our top 3 performers and one lucky Stacker that took home 3 years of… | |
| Sep 2, 2026 2:30 PM | Focus On Your Training. We'll Handle the Rest. | 46 | TheStack Bat's built-in speed sensor measures and transmits your swing speeds directly to… | Sep 2, 2026 2:30 PM · 46 characters. TheStack Bat's built-in speed sensor measures and transmits your swing speeds directly to… | |
| Sep 1, 2026 10:07 AM | Practice Smarter with a Smart Radar 🧠 | 37 | Dial in your distances with fun and efficient range practice powered by the most versatile… | Sep 1, 2026 10:07 AM · 37 characters. Dial in your distances with fun and efficient range practice powered by the most versatile… | |
| Aug 28, 2026 11:03 AM | Dial in Your Distances with Stack Wedging | 41 | Get a feel for those hard-to-hit shots between 30 and 140 yards with fun + personalized… | Aug 28, 2026 11:03 AM · 41 characters. Get a feel for those hard-to-hit shots between 30 and 140 yards with fun + personalized… | |
| Aug 20, 2026 11:30 AM | Stop Guessing. Start Stacking. | 30 | Unlock more power, more damage, and more confidence at the plate with efficient training… | Aug 20, 2026 11:30 AM · 30 characters. Unlock more power, more damage, and more confidence at the plate with efficient training… | |
| Aug 19, 2026 6:01 PM | Explore Our Podcast Playlist 🎙️ | 30 | Interested in golf science, golf biomechanics, or want more information on TheStack? Check… | Aug 19, 2026 6:01 PM · 30 characters. Interested in golf science, golf biomechanics, or want more information on TheStack? Check… | |
| Aug 11, 2026 11:07 AM | Introducing Stack Stats | 23 | Claim your 3 month free trial today! Track your game like never before with this brand new… | Aug 11, 2026 11:07 AM · 23 characters. Claim your 3 month free trial today! Track your game like never before with this brand new… | |
| Aug 6, 2026 10:45 AM | Speed Training Made Simple | 26 | All you have to do to gain bat speed is follow TheStack App's guidance and train hard! | Aug 6, 2026 10:45 AM · 26 characters. All you have to do to gain bat speed is follow TheStack App's guidance and train hard! | |
| Aug 5, 2026 12:30 PM | Supercharge Your Range Practice | 31 | With Practice Tracker, you can track every shot you hit on the range to dial in your… | Aug 5, 2026 12:30 PM · 31 characters. With Practice Tracker, you can track every shot you hit on the range to dial in your… | |
| Jul 31, 2026 12:01 PM | Build Speed Like Brendan Donovan | 32 | All-Star Brendan Donovan has already gained 4 MPH with Stack Baseball. If you're not speed… | Jul 31, 2026 12:01 PM · 32 characters. All-Star Brendan Donovan has already gained 4 MPH with Stack Baseball. If you're not speed… | |
| Jul 29, 2026 11:15 AM | A Pro Tip from Michael Kim | 26 | Save $59 on TheStack to celebrate MK's historic 59 at the 3M Open! ... "The Stack System… | Jul 29, 2026 11:15 AM · 26 characters. Save $59 on TheStack to celebrate MK's historic 59 at the 3M Open! ... "The Stack System… | |
| Jul 25, 2026 11:08 AM | Michael Kim Shoots 59 at the 3M! | 32 | "I basically only do Stack Putting for my putting practice now" - Michael Kim. MK gained… | Jul 25, 2026 11:08 AM · 32 characters. "I basically only do Stack Putting for my putting practice now" - Michael Kim. MK gained… | |
| Jul 24, 2026 11:30 AM | Stop Wasting Time on the Putting Green | 38 | Start your 3 month free trial to Stack Putting to unlock TOUR-caliber insights about your… | Jul 24, 2026 11:30 AM · 38 characters. Start your 3 month free trial to Stack Putting to unlock TOUR-caliber insights about your… | |
| Jul 17, 2026 6:30 PM | Major Stage. Major Speed. | 25 | Watch how Major Champion Matt Fitzpatrick gained both distance and accuracy by speed… | Jul 17, 2026 6:30 PM · 25 characters. Watch how Major Champion Matt Fitzpatrick gained both distance and accuracy by speed… | |
| Jul 16, 2026 11:45 AM | From the Tee Box to the Batter's Box · Resent | 36 | TheStack's proven speed training trusted by 75,000+ golfers is now helping young… | Jul 16, 2026 11:45 AM · 36 characters. TheStack's proven speed training trusted by 75,000+ golfers is now helping young… | |
| Jul 16, 2026 11:30 AM | From the Tee Box to the Batter's Box | 36 | TheStack's proven speed training trusted by 75,000+ golfers is now helping young… | Jul 16, 2026 11:30 AM · 36 characters. TheStack's proven speed training trusted by 75,000+ golfers is now helping young… | |
| Jul 13, 2026 10:24 AM | $50 Off for 50 Million Swings! | 30 | Celebrate this huge milestone with an extra $50 savings on TheStack + Stack Radar Bundle!… | Jul 13, 2026 10:24 AM · 30 characters. Celebrate this huge milestone with an extra $50 savings on TheStack + Stack Radar Bundle!… | |
| Jul 10, 2026 11:15 AM | 50,000,000 Swings and Counting 🚀 | 32 | Celebrate this huge milestone with an extra $50 savings on TheStack + Stack Radar Bundle… | Jul 10, 2026 11:15 AM · 32 characters. Celebrate this huge milestone with an extra $50 savings on TheStack + Stack Radar Bundle… | |
| Jul 7, 2026 1:15 PM | Every Hitter Needs Bat Speed. | 29 | Unlock more power, more damage, and more confidence at the plate with efficient training… | Jul 7, 2026 1:15 PM · 29 characters. Unlock more power, more damage, and more confidence at the plate with efficient training… | |
| Jul 7, 2026 11:00 AM | The Yankees are Prioritizing Bat Speed Training | 47 | How pro teams are incorporating Stack Baseball to develop hitters and maximize production… | Jul 7, 2026 11:00 AM · 47 characters. How pro teams are incorporating Stack Baseball to develop hitters and maximize production… | |
| Jul 3, 2026 10:17 AM | Seasonal Circuit Season 2 Starts Tomorrow! | 42 | Save $40 + Free Shipping on Stack Radar and start competing in weekly wedge challenges for… | Jul 3, 2026 10:17 AM · 42 characters. Save $40 + Free Shipping on Stack Radar and start competing in weekly wedge challenges for… |
Based on 86 emails received from Mar 17 to Oct 29, 2026. Times in US Eastern. How we collect