🧮 How it works
Newsletter Send Time Helper: the logic behind the recommendation
“Best time to send a newsletter” is a famous question because it has two truths at once:
(1) timing really does matter, and (2) there isn’t a universal magic hour.
If your audience is global, you can’t pick a single clock time that’s perfect for everyone.
If your audience is local but mixed (students + professionals + parents), the same time can perform
very differently depending on the day and what you’re sending.
This tool solves the problem in a practical way: it produces a recommended send-time window
in your audience’s local time, plus a backup window if you can’t send at the ideal moment.
It also generates a Send‑Time Score (0–100) so you can quickly compare options (for example,
“Tuesday 10:00 vs Thursday 15:00”) and screenshot the result for your creator friends.
The three ingredients
- Audience timezone: Your email should land when readers are awake and checking inbox.
- Day-of-week behavior: Monday can be busy, Friday can be distracted, weekends vary by niche.
- Email intent: A calm editorial newsletter behaves differently than a promo or launch.
The “attention window” model
The calculator uses a simple model: each combination of audience style (B2B vs consumer),
email type (newsletter vs launch), and goal (opens vs clicks) has a few “attention windows”
where readers are more likely to engage.
For example, B2B readers often scan email in the morning when planning their day,
but clicks can rise later when they have time to read. Consumer audiences can be more active
after work. Students may be more responsive in the late afternoon or evening.
This tool converts those patterns into recommended windows like 09:00–11:00
or 18:00–20:00 (always in the audience’s local time).
Formula breakdown (Send‑Time Score)
The Send‑Time Score is a weighted score between 0 and 100. It is built from:
- Window alignment (0–70 points): How close your preferred hour is to the best window’s center.
- Day quality (−15 to +15 points): Some days are “high attention” for certain audiences.
- Type‑match bonus (0–15 points): Launch emails get a bonus for “early day urgency” windows; promos get a bonus for “decision” windows.
If you don’t pick a preferred send hour, the tool assumes you’ll send at the recommended window’s midpoint
and gives you a score that reflects that choice.
Why a score helps
A window is actionable, but a score is comparable. If you’re deciding between two options,
a 12‑point difference is meaningful: it usually indicates you’re moving from “busy inbox moment”
to “habit-friendly moment.” You can also use the score as a quick A/B testing plan:
try one send at a score of ~85+ and another at ~65–75, then compare your metrics.
Two quick examples
- Example 1 (B2B newsletter): Audience = US Eastern, Day = Tuesday, Type = weekly newsletter, Goal = opens. Recommended: 09:30–11:00 with a high score because readers are planning their day.
- Example 2 (Consumer promo): Audience = Central Europe, Day = Friday, Type = promo, Goal = sales. Recommended: 17:30–19:30 because people are shifting into weekend mindset and have time to browse.
If you have real data in your ESP (Beehiiv, ConvertKit, Mailchimp, etc.), use this tool as a hypothesis generator:
it gives you a smart default to test — it doesn’t replace your audience analytics.