Timing your emails wrong can kill an otherwise solid campaign. Based on analysis of over 800 million emails sent across e-commerce, healthcare, finance, B2B and B2C industries, there are clear patterns that separate high-engagement sends from those that get buried or ignored.
Key Takeaways
- Tuesdays, Wednesdays and Thursdays consistently outperform other days for email engagement.
- 11 AM to 3:30 PM in your recipient's local time zone is the sweet spot for getting your email seen and acted on.
- Mondays are usually the worst day to send, and Fridays are unreliable outside of Q1 and Q4.
- Always send based on the recipient's local time, not your own, especially if your list spans multiple time zones.
- A/B test with 2 to 3 audience groups at different send times before settling on a formula.
Which Days Should You Send Marketing Emails?
Avoid Mondays (and be careful with Fridays)
Monday is typically the worst day to send a marketing email. People are catching up on internal messages, project updates and urgent tasks from the weekend. Your email isn't a priority to them, and it's likely to get buried before they even notice it.
Fridays are unpredictable. They can work in Q1 and Q4, but Q2 and Q3 (the summer months, mostly) tend to see weaker performance. If you do send on a Friday, aim for early morning through to around 2 PM. Check your past campaign data first and test before committing to it as a regular slot.
Your Best Window: Tuesday, Wednesday and Thursday
Midweek is where email performance tends to peak. Recipients are settled into their working week, inboxes are less chaotic than Monday, and people generally have more headspace to read and respond.
If you're starting from scratch and have no data yet, these three days are the safest place to begin.
What Time of Day Gets the Best Results?
Send Between 11 AM and 3:30 PM Local Time
The analysis of 800 million emails points to a clear daily window: 11 AM to 3:30 PM in your recipient's local time zone.
Here's why the boundaries matter:
- Before 11 AM: Your email lands in the middle of the morning rush, where it competes with everything else that arrived overnight. It's more likely to be skipped.
- After 3:30 PM: People start wrapping up for the day. The chance of getting a reply or a click drops noticeably.
The hours in between catch people when they're working steadily, have dealt with urgent morning tasks, and haven't yet switched into end-of-day mode.
Send in the Recipient's Time Zone, Not Yours
If your list includes people in different time zones, this is a simple but high-impact adjustment. Scheduling a send for 11 AM your time doesn't mean it arrives at 11 AM for someone in Edinburgh, Dublin or across the Atlantic. Most modern email platforms let you send based on each subscriber's local time. Use that feature.
How to Find Your Own Best Send Time
These benchmarks are a strong starting point, but your specific audience and industry will have their own quirks. The way to find your ideal timing is to test it systematically.
Here's a straightforward plan:
- Split your list into 2 to 3 groups. Don't test on your entire database at once.
- Assign each group a different send window:
- Group 1: 10 AM to 11:30 AM
- Group 2: 1 PM
- Group 3: 3 PM to 4 PM
- For time-sensitive content (flash sales, seasonal offers, giveaways), consider sending multiple times in a day to maximise reach while still gathering data.
- Track open rates, click-through rates and conversions for each group. Once you have enough data, you'll be able to spot which window consistently performs best for your audience.
| Group | Send Window | Best For |
|---|---|---|
| Group 1 | 10:00 AM, 11:30 AM | Early-day engagement testing |
| Group 2 | 1:00 PM | Lunchtime engagement testing |
| Group 3 | 3:00 PM, 4:00 PM | Afternoon engagement testing |
Keep refining. No two audiences behave identically, and what works today may shift over time as your list evolves.
Timing Is Only Part of the Picture
Getting the send time right matters, but it won't rescue a weak email. Strong subject lines and genuinely useful content are just as important. When you combine accurate timing, consistent testing and compelling messaging, that's when you really start to see results move.
If you're investing in email as part of a broader digital strategy, it's worth making sure your website is doing its job when those clicks land. Our paid advertising and digital marketing support can help you build campaigns where every element, from send time to landing page, is working together.
Frequently asked questions
What is the best day of the week to send a marketing email?
Tuesday, Wednesday and Thursday consistently produce the strongest engagement. Monday is generally the worst day, as inboxes are cluttered and people are focused on catching up. Fridays can work in Q1 and Q4 but tend to underperform in Q2 and Q3.
What time of day should I send a marketing email?
Based on analysis of over 800 million emails, the best window is 11 AM to 3:30 PM in your recipient's local time zone. Before 11 AM your email gets lost in the morning rush; after 3:30 PM people are winding down and less likely to engage.
Should I send emails based on my own time zone or my subscribers'?
Always use your recipient's local time zone if you can. Sending at 11 AM your time doesn't mean it arrives at 11 AM for subscribers elsewhere. Most email platforms offer time-zone-based sending, and using it can meaningfully improve open rates.
How do I find the best send time for my specific audience?
Split your list into 2 to 3 groups and test different windows: for example, 10 AM to 11:30 AM, 1 PM, and 3 PM to 4 PM. Track open rates, click-through rates and conversions for each group, then build your schedule around what the data shows.
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