Sleep Foundation emails
Sleep Foundation sends about 2 emails a week through Klaviyo, most often on Monday around 12 PM Eastern.
- ESP
- Klaviyo
- Emails a week
- about 2
- Busiest send time
- Mondays at 12pm ET
- Last sent
- 3 days ago · Oct 28
- Tracked since
- Apr 2026
- Emails collected
- 44
Recent emails
Oct 28, 2026 3:06 AM
Your opinion matters - tell us what you think!
Oct 27, 2026 3:05 AM
Get your FREE Sleep Score
Oct 26, 2026 12:35 PM
We tested 2,000 mattresses. Here is what won.
Oct 26, 2026 3:04 AM
14 Nights To Better Sleep: Night 14
Oct 25, 2026 3:01 AM
14 Nights To Better Sleep: Night 13
Oct 24, 2026 2:01 AM
14 Nights To Better Sleep: Night 12
Recent subject lines
All subject linesSubject lines average 44 characters. Each one opens the email it came from.
| Picture | Sent (Eastern) | Subject | Preview text |
|---|---|---|---|
| Oct 28, 2026 3:06 AM | Your opinion matters - tell us what you think! | Please share your thoughts about the 14 Nights to Better Sleep program | |
| Oct 27, 2026 3:05 AM | Get your FREE Sleep Score | Take our sleep quiz to learn more about your sleep | |
| Oct 26, 2026 12:35 PM | We tested 2,000 mattresses. Here is what won. | The picks our team stands behind for every sleep style, body type, and budget. | |
| Oct 26, 2026 3:04 AM | 14 Nights To Better Sleep: Night 14 | It's time to fully optimize your bedroom for restful sleep | |
| Oct 25, 2026 3:01 AM | 14 Nights To Better Sleep: Night 13 | To do: Write a to-do list before bed | |
| Oct 24, 2026 2:01 AM | 14 Nights To Better Sleep: Night 12 | Allergies might be affecting your sleep - here's how to fix it | |
| Oct 23, 2026 2:03 AM | 14 Nights To Better Sleep: Night 11 | Bye bye caffeine. Hello herbal tea! | |
| Oct 22, 2026 2:02 AM | 14 Nights To Better Sleep: Night 10 | Evaluate your bedding for comfort and breathability |
Archive
View full archiveOctober 2026 21 emails
View all14 Nights To Better Sleep: Night 11
Oct 23, 2026 2:03 AM
14 Nights To Better Sleep: Night 10
Oct 22, 2026 2:02 AM
14 Nights To Better Sleep: Night 9
Oct 21, 2026 2:02 AM
14 Nights To Better Sleep: Night 8
Oct 20, 2026 2:05 AM
We tested 2,000 beds. Here is what we found for every type of sleeper.
Oct 19, 2026 1:36 PM
We tested thousands of sleep products. Here’s what’s worth getting.
Oct 19, 2026 12:31 PM
When Sleep Foundation sends
30% of its emails arrive in the 12 PM hour, with a second, smaller wave around 2 AM. Mondays are the busiest day.
| 12a | 1a | 2a | 3a | 4a | 5a | 6a | 7a | 8a | 9a | 10a | 11a | 12p | 1p | 2p | 3p | 4p | 5p | 6p | 7p | 8p | 9p | 10p | 11p | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mon | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 8 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Tue | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Wed | 0 | 0 | 2 | 1 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Thu | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Fri | 0 | 0 | 2 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Sat | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Sun | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Mon | Tue | Wed | Thu | Fri | Sat | Sun | |
|---|---|---|---|---|---|---|---|
| 12a | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
| 1a | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2a | 1 | 1 | 2 | 2 | 2 | 2 | 1 |
| 3a | 1 | 1 | 1 | 0 | 0 | 0 | 1 |
| 4a | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 5a | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 6a | 1 | 0 | 2 | 0 | 1 | 0 | 0 |
| 7a | 0 | 0 | 0 | 1 | 0 | 0 | 0 |
| 8a | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 9a | 0 | 2 | 0 | 1 | 0 | 0 | 1 |
| 10a | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 11a | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 12p | 8 | 0 | 1 | 2 | 0 | 2 | 0 |
| 1p | 6 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2p | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 3p | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 4p | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 5p | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 6p | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 7p | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 8p | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 9p | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 10p | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 11p | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
FewerMore(busiest cell: 8 emails)
Based on 44 emails received from Apr 16 to Oct 28, 2026. Times in US Eastern. How we collect · When all brands send
How often Sleep Foundation sends
Complete months have run between 3 and 5 emails.
- Busiest month
- Aug 2026, 5
- Quietest month
- Jun 2026, 3
- Busiest day
- Monday, 17
- Quietest day
- Friday, 3
About Sleep Foundation
- ESP
- Klaviyo
- Tracked since
- Apr 2026
- Emails collected
- 44
- Emails a week
- about 2
- Last sent
- Oct 28, 2026
- Sends from
- newsletter@
sleepfoundation.org - Subject length
- 44 characters avg
Counts include automated emails such as a welcome series.
Similar sending frequency
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|---|---|---|---|---|---|---|---|
 11Bravos11bravos.com · Top 1 million sites | Klaviyo | Top 1 million sites | about 2 | Saturday | Oct 29, 2026 | Klaviyo · about 2 a week · busiest Saturday · last sent Oct 29, 2026 | |
 3X4 Genetics3x4genetics.com | Klaviyo | about 2 | Wednesday | Oct 30, 2026 | Klaviyo · about 2 a week · busiest Wednesday · last sent Oct 30, 2026 | ||
 4MYTU4mytu.com | Klaviyo | about 2 | Monday | Oct 30, 2026 | Klaviyo · about 2 a week · busiest Monday · last sent Oct 30, 2026 |
