The Best Time to Send Emails Based on Time Zones
Timing is everything in email marketing. Send at the right moment, and your email gets opened, clicked, and converted. Send at the wrong moment, and it gets buried under newer messages before the recipient ever sees it.
The problem is that "the right moment" is different for every recipient. A 9 AM send works for someone in New York but arrives at 2 AM for someone in London. Time zones turn a simple timing question into a complex optimization problem.
This guide explains the best time to send emails based on time zones, backed by data.
Use the free time zone converter here →
The Short Answer: Send at 9–11 AM Local Time
The most reliable window for email opens is 9–11 AM in the recipient's local time zone. For clicks, 7–8 AM and 4 PM perform best. For conversions, early morning (7–8 AM) is strongest.
| Goal | Best Local Time |
|---|---|
| Opens | 9–11 AM |
| Clicks | 7–8 AM and 4 PM |
| Conversions | 7–8 AM |
| Avoid | After 9 PM, before 7 AM |
Why Time Zones Matter for Email Timing
The Problem With a Single Send Time
If you send to your entire list at 9 AM New York time, subscribers in London receive it at 2 PM, and subscribers in Sydney receive it at 11 PM. By the time they check their inbox, your email is buried.
| Your Send Time | New York | London | Sydney |
|---|---|---|---|
| 9 AM EST | 9 AM | 2 PM | 11 PM |
| 9 AM GMT | 4 AM | 9 AM | 6 PM |
| 9 AM AEST | 6 PM | 11 PM | 9 AM |
The Local Time Advantage
Emails sent at the right local time are more likely to appear near the top of the inbox when the recipient is active. Research shows campaigns sent within the subscriber's local time zone see significantly higher engagement [citation:9].
| Metric | Single Send Time | Local Time Send |
|---|---|---|
| Open rate | Lower | Higher |
| Click rate | Lower | Higher |
| Perceived relevance | Generic | Localized |
The Best Time of Day by Goal
For Opens: 9–11 AM Local Time
Open rates peak in the late morning, between 9 AM and 11 AM. This is when most people check their inbox after arriving at work or during their morning routine.
| Study | Best Time for Opens |
|---|---|
| HubSpot | 11 AM |
| Moosend | 8–9 AM |
| Omnisend | 9–11 AM |
| MailerLite | 9–10 AM |
Takeaway: Aim for 9–11 AM local time for maximum visibility [citation:1][citation:2][citation:14].
For Clicks: 7–8 AM and 4 PM Local Time
Click-through rates follow a different pattern. Clicks peak early in the morning (7–8 AM) and again later in the afternoon (around 4 PM).
| Window | Why It Works |
|---|---|
| 7–8 AM | First inbox check of the day |
| 4 PM | Afternoon break, end-of-day review |
Takeaway: If your goal is clicks, send at 7–8 AM or 4 PM local time [citation:2].
For Conversions: 7–8 AM Local Time
The strongest conversion window is early morning, especially Friday at 7 AM and Monday at 8 AM. This is when purchase intent is highest.
| Day | Best Conversion Time | Conversion Rate |
|---|---|---|
| Friday | 7 AM | 0.138% |
| Monday | 8 AM | 0.114% |
| Tuesday | 12 PM | 0.131% |
Takeaway: For revenue-focused campaigns, send at 7–8 AM local time [citation:2][citation:8].
The Best Day of the Week
Tuesday: Best for Opens and Clicks
Tuesday consistently ranks as the best day for email engagement. It has the strongest top-of-funnel performance, with the highest open rate (31.27%) and click-to-sent rate (0.81%) [citation:2].
| Day | Open Rate | Click Rate |
|---|---|---|
| Tuesday | 31.27% | 0.81% |
| Sunday | 30.60% | 0.69% |
| Thursday | High | High |
Friday: Best for Conversions
Friday leads the week for conversions, with a rate of 0.081%. It also has the highest send volume, indicating many marketers treat it as a key sales window [citation:2][citation:8].
| Day | Conversion Rate |
|---|---|
| Friday | 0.081% |
| Tuesday | 0.066% |
| Saturday | 0.058% |
Saturday: Worst Day Overall
Saturday is the weakest day for email engagement, with the lowest click-to-sent rate (0.68%) and conversion rate (0.058%) [citation:2].
| Day | Performance |
|---|---|
| Tuesday | Best |
| Thursday | Strong |
| Wednesday | Good |
| Monday | Moderate |
| Friday | Mixed |
| Sunday | Weak |
| Saturday | Worst |
How to Send Based on Time Zones
Method 1: Segment by Region
The simplest approach is to segment your list by time zone and schedule separate sends for each segment.
| Segment | Send Time (Local) |
|---|---|
| US Eastern | 9 AM EST |
| US Pacific | 9 AM PST |
| UK | 9 AM GMT |
| Europe | 9 AM CET |
| Australia | 9 AM AEST |
Benefit: Full control over timing. Drawback: More campaigns to manage.
Method 2: Use Time Zone–Aware Sending
Many email platforms offer time zone–based sending, where you set a local time and the platform delivers to each recipient at that time in their zone [citation:7].
| Platform Feature | How It Works |
|---|---|
| MailerLite | Deliver at same time in each zone |
| Lemlist | Timezone-based schedule per lead |
| Customer.io | Recommended send time by zone |
Example: Set a campaign to send at 9 AM local time. A subscriber in New York receives it at 9 AM EST; a subscriber in London receives it at 9 AM GMT; a subscriber in Sydney receives it at 9 AM AEST [citation:7].
Method 3: Use Send Time Optimization (STO)
Some platforms use AI and behavioral data to predict the best send time for each individual contact [citation:4][citation:13].
| Approach | How It Works |
|---|---|
| Behavioral STO | Learns from each contact's open history |
| AI-based STO | Predicts optimal time based on content and audience |
| IP-based STO | Uses IP geolocation to estimate time zone |
Best for: Lists with rich engagement data.
Method 4: Use IP Geolocation
For new or low-activity contacts without behavioral data, IP geolocation can estimate the time zone based on the user's IP address [citation:3].
| Step | Action |
|---|---|
| 1 | Capture IP on signup |
| 2 | Detect time zone via IP database |
| 3 | Store time zone in contact profile |
| 4 | Schedule sends by local time |
Best for: New subscribers, imported lists, low-engagement contacts.
Common Mistakes to Avoid
| Mistake | Why It Hurts |
|---|---|
| Single send time for global list | Wrong local time for most recipients |
| Sending at 3 AM local | Email buried by morning |
| Ignoring DST | Off by one hour twice a year |
| Assuming all time zones are whole hours | India, Nepal use fractional offsets |
| Not testing | General data may not fit your audience |
| Sending after 9 PM local | Poor engagement |
| Sending on Saturday | Worst day for metrics |
Quick Reference Card
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BEST TIME TO SEND EMAILS BY TIME ZONE — CHEAT SHEET
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GOLDEN RULE:
Send at 9–11 AM in the recipient's LOCAL time zone
BY GOAL:
Opens → 9–11 AM local
Clicks → 7–8 AM and 4 PM local
Conversions → 7–8 AM local
BY DAY:
Tuesday → Best for opens and clicks
Thursday → Strong second
Friday → Best for conversions
Saturday → Worst day overall
WHAT TO AVOID:
After 9 PM local
Before 7 AM local
Saturday sends
Single send time for global lists
HOW TO SEND BY TIME ZONE:
1. Segment by region
2. Use time zone–aware sending
3. Use Send Time Optimization (STO)
4. Use IP geolocation for new contacts
PLATFORM FEATURES:
MailerLite → Deliver at same time in each zone
Lemlist → Timezone-based schedule per lead
Customer.io → AI-recommended send time
EXAMPLE SCHEDULE:
US Eastern → 9 AM EST
US Pacific → 9 AM PST
UK → 9 AM GMT
Europe → 9 AM CET
Australia → 9 AM AEST
GOLDEN RULE:
One send time does not fit all. Send local.
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Check live conversions at: /timezone-converter
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Frequently Asked Questions
What is the best time to send emails based on time zones?
The most reliable window is 9–11 AM in the recipient's local time zone. For clicks, aim for 7–8 AM or 4 PM local time. For conversions, early morning (7–8 AM) performs best.
Why does time zone matter for email timing?
A single send time reaches recipients at different local hours. Sending at 9 AM New York time means 2 PM in London and 11 PM in Sydney. Local-time sending ensures your email arrives when the recipient is active.
What is the best day to send emails?
Tuesday is the best day for opens and clicks. Friday is best for conversions. Saturday is the worst day overall. Midweek (Tuesday–Thursday) is generally strong.
What is the best time for email opens?
Open rates peak between 9 AM and 11 AM local time. This is when most people check their inbox after arriving at work or during their morning routine.
What is the best time for email clicks?
Click-through rates peak at 7–8 AM and again at 4 PM local time. These are the two windows when recipients are most likely to take action.
What is the best time for email conversions?
Conversions peak at 7–8 AM local time, especially on Friday and Monday. This is when purchase intent is highest.
Should I send emails on Saturday?
No. Saturday is the worst day for email engagement, with the lowest click and conversion rates. Avoid weekend sends for most campaigns.
How do I send emails based on time zones?
You can segment your list by region and schedule separate sends, or use a time zone–aware email platform that delivers at the same local time in each zone. Some platforms also use AI to predict the best send time per contact.
What is Send Time Optimization (STO)?
STO uses behavioral data or AI to predict the best send time for each individual contact. It works best when you have rich engagement history.
How do I handle new subscribers without time zone data?
Use IP geolocation to estimate the time zone based on the subscriber's IP address. Store the time zone in their profile and use it for future sends.
What is the biggest mistake in email timing?
Sending to a global list at a single fixed time without considering time zones. This means most recipients receive your email at the wrong local hour.
Final Thoughts
Email timing is not about finding one perfect hour. It is about sending at the right local time for each recipient. The data is clear: 9–11 AM local time is best for opens, 7–8 AM and 4 PM for clicks, and 7–8 AM for conversions.
The tools to do this are widely available. Segment by region, use time zone–aware sending, or let AI optimize per contact. Whatever method you choose, the principle is the same: send local, not global.
Three things to remember:
- Send at 9–11 AM local time. Best window for opens
- Tuesday for opens, Friday for conversions. Different goals, different days
- Use time zone–aware sending. One send time does not fit all
Check time zone conversions instantly → /timezone-converter
Tags: best time to send emails based on time zones, email send time optimization, time zone aware email sending, best day to send email, best time for email opens, best time for email clicks, best time for email conversions, email marketing time zone tips, send time optimization, time zone converter
