Feno subject lines
165 subject lines averaging 37 characters.
| Picture | Sent (Eastern) | Subject | Characters | Preview text | |
|---|---|---|---|---|---|
| Apr 1, 2026 1:42 PM | If whitening isn’t working anymore… | 35 | You might be overdoing it. | Apr 1, 2026 1:42 PM · 35 characters. You might be overdoing it. | |
| Mar 29, 2026 1:31 PM | When brushing doesn’t stay consistent… | 38 | It’s not just about discipline. | Mar 29, 2026 1:31 PM · 38 characters. It’s not just about discipline. | |
| Mar 27, 2026 5:11 PM | ⏳ Don’t Lose Your Reserved Smartbrush | 37 | The toothbrush that gets it done in 20 seconds. | Mar 27, 2026 5:11 PM · 37 characters. The toothbrush that gets it done in 20 seconds. | |
| Mar 27, 2026 1:33 PM | If you’ve been struggling with dry mouth… | 41 | It may not be what you think. | Mar 27, 2026 1:33 PM · 41 characters. It may not be what you think. | |
| Mar 26, 2026 5:11 PM | Why 10,000+ switched to Feno—before it sells out | 48 | Your gifts are waiting. | Mar 26, 2026 5:11 PM · 48 characters. Your gifts are waiting. | |
| Mar 25, 2026 5:11 PM | Everyone’s claiming theirs... have you? | 39 | Up to $200 in savings—Your Founder’s Perk is Waiting | Mar 25, 2026 5:11 PM · 39 characters. Up to $200 in savings—Your Founder’s Perk is Waiting | |
| Mar 25, 2026 1:26 PM | Epilepsy doesn’t just affect the brain | 38 | There’s a lesser-known oral effect. | Mar 25, 2026 1:26 PM · 38 characters. There’s a lesser-known oral effect. | |
| Mar 24, 2026 5:11 PM | Why 20,000+ switched brushes | 28 | Faster clean. Better results. Less effort. | Mar 24, 2026 5:11 PM · 28 characters. Faster clean. Better results. Less effort. | |
| Mar 22, 2026 1:52 PM | This overlooked trigger keeps showing up in migraines | 53 | It’s not in your head. | Mar 22, 2026 1:52 PM · 53 characters. It’s not in your head. | |
| Mar 20, 2026 1:12 PM | PTSD may be showing up in your mouth | 36 | Most people miss this link. | Mar 20, 2026 1:12 PM · 36 characters. Most people miss this link. | |
| Mar 19, 2026 3:44 AM | ⏳ Don’t Lose Your Reserved Smartbrush | 37 | The toothbrush that gets it done in 20 seconds. | Mar 19, 2026 3:44 AM · 37 characters. The toothbrush that gets it done in 20 seconds. | |
| Mar 18, 2026 1:09 PM | This showed up in brain scans unexpectedly | 42 | It may start in the mouth. | Mar 18, 2026 1:09 PM · 42 characters. It may start in the mouth. | |
| Mar 18, 2026 3:43 AM | Why 10,000+ switched to Feno—before it sells out | 50 | Your gifts are waiting. | Mar 18, 2026 3:43 AM · 50 characters. Your gifts are waiting. | |
| Mar 17, 2026 3:43 AM | Everyone’s claiming theirs... have you? | 39 | Up to $200 in savings—Your Founder’s Perk is Waiting | Mar 17, 2026 3:43 AM · 39 characters. Up to $200 in savings—Your Founder’s Perk is Waiting | |
| Mar 16, 2026 3:44 AM | Don't forget about your next favorite toothbrush | 48 | ⭐️⭐️⭐️⭐️⭐️ "My teeth have never been so clean" | Mar 16, 2026 3:44 AM · 48 characters. ⭐️⭐️⭐️⭐️⭐️ "My teeth have never been so clean" |
Based on 165 emails received from Mar 16 to Nov 5, 2026. Times in US Eastern. How we collect