Sinister Diesel subject lines
149 subject lines averaging 34 characters.
| Picture | Sent (Eastern) | Subject | Characters | Preview text | |
|---|---|---|---|---|---|
| Jul 28, 2026 10:02 AM | The Mid Summer Sale Starts Now ☀️ | 33 | Save 12–35% on the diesel upgrades you've been waiting for. | Jul 28, 2026 10:02 AM · 33 characters. Save 12–35% on the diesel upgrades you've been waiting for. | |
| Jul 26, 2026 3:27 AM | Still on the fence? Here's 10% off | 34 | 💰Use this toward the upgrade you were considering. | Jul 26, 2026 3:27 AM · 34 characters. 💰Use this toward the upgrade you were considering. | |
| Jul 25, 2026 3:26 AM | 🤔 Still considering your upgrade? | 34 | Your upgrade is still available — take a closer look. | Jul 25, 2026 3:26 AM · 34 characters. Your upgrade is still available — take a closer look. | |
| Jul 24, 2026 3:25 AM | 👀 You were checking this out earlier | 37 | Take another look — built to solve real problems diesel owners deal with every day. | Jul 24, 2026 3:25 AM · 37 characters. Take another look — built to solve real problems diesel owners deal with every day. | |
| Jul 23, 2026 10:16 AM | 2X Rewards Are Live 🔥 | 22 | Every dollar spent earns double the points—but only for a limited time. | Jul 23, 2026 10:16 AM · 22 characters. Every dollar spent earns double the points—but only for a limited time. | |
| Jul 19, 2026 6:00 PM | When Did You Last Change Your Filters? | 38 | Dirty filters can rob power, hurt fuel economy, and shorten the life of expensive… | Jul 19, 2026 6:00 PM · 38 characters. Dirty filters can rob power, hurt fuel economy, and shorten the life of expensive… | |
| Jul 12, 2026 6:00 PM | Once They're Gone, They're Gone. | 32 | Save big on clearance, open-box, and scratch & dent parts before they're gone. | Jul 12, 2026 6:00 PM · 32 characters. Save big on clearance, open-box, and scratch & dent parts before they're gone. | |
| Jul 11, 2026 10:50 AM | Still on the fence? | 19 | 💰Use this toward the upgrade you were considering. | Jul 11, 2026 10:50 AM · 19 characters. 💰Use this toward the upgrade you were considering. | |
| Jul 11, 2026 10:01 AM | Is Your Truck Ready to Tow This Summer? | 39 | Stay cool, tow with confidence, and avoid common failures with these essential upgrades. | Jul 11, 2026 10:01 AM · 39 characters. Stay cool, tow with confidence, and avoid common failures with these essential upgrades. | |
| Jul 10, 2026 10:49 AM | 🤔 Still considering your upgrade? | 34 | Your upgrade is still available — take a closer look. | Jul 10, 2026 10:49 AM · 34 characters. Your upgrade is still available — take a closer look. | |
| Jul 9, 2026 10:48 AM | 👀 You were checking this out earlier | 37 | Take another look — built to solve real problems diesel owners deal with every day. | Jul 9, 2026 10:48 AM · 37 characters. Take another look — built to solve real problems diesel owners deal with every day. | |
| Jul 7, 2026 10:00 AM | The 5 Upgrades Every 6.7 Powerstroke Needs | 42 | Our most popular reliability and performance upgrades for the 6.7 Powerstroke. | Jul 7, 2026 10:00 AM · 42 characters. Our most popular reliability and performance upgrades for the 6.7 Powerstroke. | |
| Jul 6, 2026 10:01 AM | Last Day to Save | 16 | Your 4th of July savings end tonight. Don't miss out. | Jul 6, 2026 10:01 AM · 16 characters. Your 4th of July savings end tonight. Don't miss out. | |
| Jul 3, 2026 8:39 AM | Still on the fence? | 19 | 💰Use this toward the upgrade you were considering. | Jul 3, 2026 8:39 AM · 19 characters. 💰Use this toward the upgrade you were considering. | |
| Jul 2, 2026 8:38 AM | 🤔 Still considering your upgrade? | 34 | Your upgrade is still available — take a closer look. | Jul 2, 2026 8:38 AM · 34 characters. Your upgrade is still available — take a closer look. | |
| Jul 1, 2026 10:02 AM | The 4th of July Sale Starts Now | 31 | Big savings on diesel parts, filtration, kits, merch, and more. | Jul 1, 2026 10:02 AM · 31 characters. Big savings on diesel parts, filtration, kits, merch, and more. | |
| Jul 1, 2026 8:37 AM | 👀 You were checking this out earlier | 37 | Take another look — built to solve real problems diesel owners deal with every day. | Jul 1, 2026 8:37 AM · 37 characters. Take another look — built to solve real problems diesel owners deal with every day. | |
| Jun 30, 2026 7:01 PM | 👉 Don't Let Someone Else Win Your Truck | 40 | The giveaway ends tonight. Don't miss your chance. | Jun 30, 2026 7:01 PM · 40 characters. The giveaway ends tonight. Don't miss your chance. | |
| Jun 30, 2026 10:00 AM | Ends Tonight: Your Chance to Win This F-250 | 43 | Purchasing one T-Shirt could win you a 6.0 Powerstroke F250 | Jun 30, 2026 10:00 AM · 43 characters. Purchasing one T-Shirt could win you a 6.0 Powerstroke F250 | |
| Jun 27, 2026 10:03 AM | Once They're Gone, They're Gone | 31 | Deep discounts on scratch & dent, open box, and clearance items. | Jun 27, 2026 10:03 AM · 31 characters. Deep discounts on scratch & dent, open box, and clearance items. | |
| Jun 26, 2026 4:01 PM | Final Hours of Diesel Prime Time | 32 | Your last chance to save—sale ends tonight. | Jun 26, 2026 4:01 PM · 32 characters. Your last chance to save—sale ends tonight. | |
| Jun 25, 2026 6:01 PM | Your Last Week to Win This Truck | 32 | The giveaway ends June 30. Enter while you still can. | Jun 25, 2026 6:01 PM · 32 characters. The giveaway ends June 30. Enter while you still can. | |
| Jun 24, 2026 2:50 PM | Still on the fence? | 19 | 💰Use this toward the upgrade you were considering. | Jun 24, 2026 2:50 PM · 19 characters. 💰Use this toward the upgrade you were considering. | |
| Jun 23, 2026 2:49 PM | 🤔 Still considering your upgrade? | 34 | Your upgrade is still available — take a closer look. | Jun 23, 2026 2:49 PM · 34 characters. Your upgrade is still available — take a closer look. | |
| Jun 23, 2026 9:16 AM | 4 Days. Big Savings. Diesel Prime Time Is Live. | 47 | 4 days of exclusive savings on the diesel parts you actually need. | Jun 23, 2026 9:16 AM · 47 characters. 4 days of exclusive savings on the diesel parts you actually need. | |
| Jun 22, 2026 2:48 PM | 👀 You were checking this out earlier | 37 | Take another look — built to solve real problems diesel owners deal with every day. | Jun 22, 2026 2:48 PM · 37 characters. Take another look — built to solve real problems diesel owners deal with every day. | |
| Jun 21, 2026 6:01 PM | Last Chance, Dad | 16 | Father's Day savings end tonight at midnight. | Jun 21, 2026 6:01 PM · 16 characters. Father's Day savings end tonight at midnight. | |
| Jun 21, 2026 9:02 AM | Happy Father's Day to the Diesel Dads | 37 | Enjoy your day—and don't forget your Father's Day savings end soon. | Jun 21, 2026 9:02 AM · 37 characters. Enjoy your day—and don't forget your Father's Day savings end soon. | |
| Jun 19, 2026 1:45 AM | Father's Day Weekend Starts Now | 31 | Save up to 40% on the upgrades you've been wanting. | Jun 19, 2026 1:45 AM · 31 characters. Save up to 40% on the upgrades you've been wanting. | |
| Jun 17, 2026 3:20 AM | Still on the fence? | 19 | 💰Use this toward the upgrade you were considering. | Jun 17, 2026 3:20 AM · 19 characters. 💰Use this toward the upgrade you were considering. | |
| Jun 17, 2026 3:00 AM | Father's Day Sale Starts Now! | 29 | Diesel dads don't want another tie. | Jun 17, 2026 3:00 AM · 29 characters. Diesel dads don't want another tie. | |
| Jun 16, 2026 3:19 AM | 🤔 Still considering your upgrade? | 34 | Your upgrade is still available — take a closer look. | Jun 16, 2026 3:19 AM · 34 characters. Your upgrade is still available — take a closer look. | |
| Jun 15, 2026 3:18 AM | 👀 You were checking this out earlier | 37 | Take another look — built to solve real problems diesel owners deal with every day. | Jun 15, 2026 3:18 AM · 37 characters. Take another look — built to solve real problems diesel owners deal with every day. | |
| Jun 14, 2026 6:00 PM | Fix It Once. Build It Right. | 28 | Complete solution kits and all-blue upgrades built to last. | Jun 14, 2026 6:00 PM · 28 characters. Complete solution kits and all-blue upgrades built to last. | |
| Jun 9, 2026 6:25 PM | Why Is Everyone Buying These Parts? | 35 | The upgrades diesel owners trust most | Jun 9, 2026 6:25 PM · 35 characters. The upgrades diesel owners trust most | |
| Jun 5, 2026 11:00 AM | Still on the fence? | 19 | 💰Use this toward the upgrade you were considering. | Jun 5, 2026 11:00 AM · 19 characters. 💰Use this toward the upgrade you were considering. | |
| Jun 4, 2026 10:55 AM | 🤔 Still considering your upgrade? | 34 | Your upgrade is still available — take a closer look. | Jun 4, 2026 10:55 AM · 34 characters. Your upgrade is still available — take a closer look. | |
| Jun 3, 2026 10:52 AM | 👀 You were checking this out earlier | 37 | Take another look — built to solve real problems diesel owners deal with every day. | Jun 3, 2026 10:52 AM · 37 characters. Take another look — built to solve real problems diesel owners deal with every day. | |
| Jun 3, 2026 1:45 AM | Father's Day Gifts Built For Diesel Dads | 40 | Top picks for Powerstroke, Cummins & Duramax owners. | Jun 3, 2026 1:45 AM · 40 characters. Top picks for Powerstroke, Cummins & Duramax owners. | |
| May 27, 2026 1:45 PM | Stop Fixing Symptoms. Fix The Problem. | 38 | Complete diesel solution kits engineered to replace factory weak points. | May 27, 2026 1:45 PM · 38 characters. Complete diesel solution kits engineered to replace factory weak points. | |
| May 25, 2026 5:45 PM | 👉 Ends Tonight. No Extensions. | 31 | Final hours to lock in Memorial Day pricing on Sinister Diesel best sellers. | May 25, 2026 5:45 PM · 31 characters. Final hours to lock in Memorial Day pricing on Sinister Diesel best sellers. | |
| May 25, 2026 10:01 AM | Last Day To Save Up To 35% | 26 | Memorial Day deals end tonight. Don’t wait until your stock parts fail this summer. | May 25, 2026 10:01 AM · 26 characters. Memorial Day deals end tonight. Don’t wait until your stock parts fail this summer. | |
| May 24, 2026 6:01 PM | Memorial Day Sale Ends Tomorrow Night | 37 | This is your warning before prices go back up Monday night. | May 24, 2026 6:01 PM · 37 characters. This is your warning before prices go back up Monday night. | |
| May 23, 2026 9:45 AM | These Are The Parts Diesel Owners Keep Buying | 45 | Top-rated upgrades trusted by thousands of Powerstroke, Cummins, and Duramax owners. | May 23, 2026 9:45 AM · 45 characters. Top-rated upgrades trusted by thousands of Powerstroke, Cummins, and Duramax owners. | |
| May 22, 2026 1:45 AM | Memorial Day Weekend Deals Are Heating Up | 41 | Save up to 35% on diesel upgrades before the weekend traffic hits the site. | May 22, 2026 1:45 AM · 41 characters. Save up to 35% on diesel upgrades before the weekend traffic hits the site. | |
| May 21, 2026 1:45 AM | The $300 Upgrade That Can Save You Thousands | 44 | Coolant and fuel contamination destroy diesel systems. Protect your truck before expensive… | May 21, 2026 1:45 AM · 44 characters. Coolant and fuel contamination destroy diesel systems. Protect your truck before expensive… | |
| May 20, 2026 1:45 AM | Memorial Day Sale Starts Now — Save Up To 35% | 47 | Fix weak factory parts before summer hits. Memorial Day deals are officially live. | May 20, 2026 1:45 AM · 47 characters. Fix weak factory parts before summer hits. Memorial Day deals are officially live. | |
| May 17, 2026 6:01 PM | Last Day for Double Rewards | 27 | Your last shot to stack double points on Sinister upgrades. | May 17, 2026 6:01 PM · 27 characters. Your last shot to stack double points on Sinister upgrades. | |
| May 17, 2026 5:25 AM | Still on the fence? | 19 | 💰Use this toward the upgrade you were considering. | May 17, 2026 5:25 AM · 19 characters. 💰Use this toward the upgrade you were considering. | |
| May 16, 2026 5:25 AM | 🤔 Still considering your upgrade? | 34 | Your upgrade is still available — take a closer look. | May 16, 2026 5:25 AM · 34 characters. Your upgrade is still available — take a closer look. |
Based on 149 emails received from Mar 16 to Nov 7, 2026. Times in US Eastern. How we collect