What Is the Best Time to Send a Marketing Email?

“What is the best time to send a marketing email?”

It is a fair question, and one we hear often. It is also one of the hardest to answer with a single, confident response. That is not because email marketing is unpredictable. It is because email performance depends on far more than the clock.

The reality is this: there is no universal best day or time to send a marketing email. What works well for one audience can quietly underperform for another. The goal is not to find a perfect send time, but to find the right send time for your audience, your message, and your goals.

This post walks through how to think about send timing in a practical way, what patterns we commonly see, and how to test and measure success without overcomplicating things.

Start With Context, Not the Calendar

Before you think about days of the week or time of day, it helps to step back and look at what you are actually sending and who it is for.

Email performance can vary significantly based on:

• Client or company type
• Audience segment
• Job function or role
• Where someone is in the lifecycle
• The purpose of the email

A webinar invitation behaves differently than a blog announcement. An event reminder performs differently than a product update. Even within the same list, a sales leader and an individual contributor may engage at completely different times.

This is why copying a benchmark or following a generic “best time to send” chart rarely delivers consistent results. Those benchmarks are averages, and averages hide a lot of meaningful variation.

The Type of Email Matters More Than You Think

One of the most overlooked factors in send timing is the type of email you are sending.

For example:

• Webinar and event emails often perform better midweek when calendars are top of mind.
• Informational emails like blogs or newsletters may perform well when inbox pressure is lower.
• Urgent or time-sensitive emails can cut through noise even on less ideal days.

If you send every email on the same day and time regardless of intent, you are likely leaving performance on the table.

A good habit is to group emails by purpose and evaluate timing within those groups rather than across all sends.

Common Send-Day Patterns (What We Typically See)

These patterns are not rules. Think of them as directional guidance and a place to start testing.

Mondays

Mondays tend to be challenging for marketing emails. Inboxes are often full from the weekend, and many people are focused on internal priorities, meetings, and planning their week.

Marketing emails are easier to miss or deprioritize. Mondays can work for internal communications or highly operational messages, but they are often less effective for promotional or educational content.

Fridays

By Friday, attention tends to drop for many B2B audiences. People are wrapping up the week, checking out mentally, or saving things for later.

That said, Fridays are not unusable. Lighter content like newsletters or thought leadership can still perform reasonably well, especially for engaged audiences. It just tends to be less consistent.

Weekends

Weekend sends often have lower visibility and engagement, particularly for B2B lists. Many of these emails end up getting processed as part of Monday inbox cleanup.

For consumer brands or highly interest driven audiences, weekends can sometimes work. For most B2B programs, weekends are best approached cautiously and tested intentionally.

Tuesday Through Thursday

For many teams, Tuesday through Thursday is the most reliable window. Inboxes are more stable, people are settled into their workweek, and engagement is often easier to predict.

If you are unsure where to start, this is usually the safest baseline.

Does Time of Day Matter?

Time of day does matter, but usually less than relevance and clarity.

Late morning and early afternoon often perform well because people have moved past their initial inbox triage but are not yet focused on closing out the day. This window tends to capture attention without competing as heavily with meetings or end of day fatigue.

That said, time of day should always be considered alongside:

• Job function
• Time zone distribution
• Mobile versus desktop behavior

An executive audience may check email early in the morning or late in the evening. A frontline or operational role may engage during breaks or midday. These differences matter more than finding a single “best” hour.

Why Testing Is Non-Negotiable

If there is one consistent truth about send timing, it is this: testing beats guessing every time.

Industry benchmarks are useful for context, but your own historical data will always be more relevant. Testing allows you to move from assumptions to evidence.

What You Can Test

Practical testing ideas include:

• Day of week
• Time of day
• Content type
• Frequency or spacing
• Subject line approach

You do not need a complex testing program to get started. Simple, repeatable tests often provide the clearest insights.

How to Measure Success the Right Way

One of the most common mistakes we see is evaluating send time based on a single metric, usually open rate.

Open rates can be directional, but they do not tell the full story. Especially today. Instead, consider:

• Click-through rate
• Conversions or downstream actions
• Engagement trends over time
• Performance by segment rather than overall averages

A send time that produces a slightly lower open rate but higher click-through and conversion may be the better choice. Looking at metrics in isolation can lead to false conclusions.

How Long Should You Run a Send Time Test?

There is no single perfect answer, but there are a few helpful guidelines.

In general, you want to:

• Allow enough time for engagement to stabilize
• Use a meaningful audience size
• Change only one variable at a time
• Define success before the test starts

Declaring a winner too early is one of the fastest ways to undermine testing. Give your data time to tell a clear story.

Segment First, Then Optimize

Send time optimization is far more effective when paired with segmentation.

Consider testing timing based on:

• Job function or role
• Lifecycle stage
• Engagement level
• Region or time zone

Even small segmentation efforts can reveal patterns that are invisible at the aggregate level.

Dynamic Lists Versus Static Lists

The way you build your audience also affects testing accuracy.

Dynamic lists update automatically based on defined criteria. Static lists are fixed at the moment they are created.

For most ongoing testing and optimization, dynamic lists are the better option. They reflect real time audience behavior and reduce the risk of outdated or inconsistent targeting. Static lists can be useful for tightly controlled experiments, but they require more manual effort and oversight.

Do Not Ignore the Operational Foundation

Send timing will only take you so far if your underlying email program is struggling.

Deliverability, list hygiene, and engagement-based segmentation all influence whether your emails are even seen. If emails are landing in spam or being sent to unengaged contacts, timing changes alone will not fix performance issues.

If you are actively working on optimizing send time, these are worth reviewing in parallel:

• How to improve your deliverability
• How to keep a clean Marketo database
• How not to annoy your email subscribers

Timing works best when it is supported by a healthy program.

Final Thoughts

So, what is the best time to send a marketing email? Well, here is no perfect send time that works for every audience and every message.

What does work is a thoughtful approach that combines testing, segmentation, and realistic measurement. Treat send timing as a lever you refine over time, not a rule you set once and forget.

When you focus on your audience and let data guide decisions, send timing becomes a meaningful optimization rather than a guessing game.

FAQs

What is the best time to send a marketing email? 

What is the best day to send a marketing email?

For many audiences, Tuesday through Thursday is a strong starting point. The best answer, however, depends on your audience, content type, and historical performance.

What is the best time of day to send emails?

Late morning and early afternoon often perform well, but this varies by role, industry, and engagement behavior. Be sure to test what works best for your audience.

Should I send emails on weekends?

Sometimes, but only if your audience behavior supports it. Weekend sends should be tested intentionally, not assumed.

How often should I revisit send time testing?

Periodically. Audience behavior changes, and what worked last year may not hold forever.