Sending cold emails can be a powerful tool for generating leads, building relationships, and driving sales. However, as many seasoned marketers will tell you, the success of cold email marketing campaigns often hinges on one critical factor: timing. Knowing when to send your emails is key to boosting open rates, improving deliverability, and ultimately increasing conversions.

In this guide, we'll explore the best time to send cold emails, provide industry-specific insights, and provide actionable strategies to ensure your cold email outreach is as effective as possible in 2025.

Why Timing Matters in Cold Email Outreach

Timing can make or break your cold email marketing campaign. The right timing can dramatically improve your email deliverability and ensure that your message lands in the inbox when your prospect is most likely to engage. Conversely, the wrong timing could cause your email to be ignored, deleted, or even worse—marked as spam.

If you choose best days to send emails then there's 30% higher open rates compared to poorly timed emails. Timing affects your cold email open rates, click rates, and the ultimate success of your outreach campaigns.

Moreover, sending emails at the wrong time increases the likelihood that your emails will end up in spam folders. Email providers consider user behavior, and if too many of your emails are deleted without being opened, your deliverability rates can suffer. This is why it is essential to look for best days to send emails.

How Timing Impacts Cold Email Open Rates and Response Rates?

When you send your email, it affects the recipient's mood, availability, and likelihood of engaging with your content. For example, sending an email first thing in the morning might catch your prospect when they are motivated and ready to tackle new tasks, while sending one in the middle of a busy workday might mean it gets lost in the shuffle.

Key factors to consider include:

• Time Zones: It's critical to consider the recipient’s time zone, especially when sending emails to international prospects.
• Work Patterns: Understanding your target audience's daily routines can help you send your email when they are most likely to engage.
• Avoiding Spam Triggers: Timing your emails when inbox traffic is low can help improve deliverability and reduce the likelihood of being flagged as spam.

Which are the Best Days of the Week to Send Cold Emails?

Choosing the right day to send your cold emails can greatly affect your open rates and response rates. Research indicates that not all days are created equal when it comes to cold email marketing.

Tuesday, Wednesday, and Thursday: The Best Days for Cold Emails

• Tuesday is often considered the best day to send cold emails. After catching up from the weekend, many professionals look at new emails more closely on Tuesdays. Studies from HubSpot show that emails sent on Tuesdays tend to have higher open rates.
• Wednesday is another strong contender. Mid-week, prospects are typically in the flow of their workweek, making them more receptive to new ideas or outreach.
• Thursday is also a prime day for email engagement. Professionals may be more open to attending meetings or engaging with new opportunities as the weekend approaches.

Avoid Monday and Friday

• Monday tends to be a busy day where professionals catch up on emails accumulated over the weekend. Emails sent on Mondays are often buried under a pile of other messages, reducing the chance of being seen.
• Friday is not ideal either. Many people are winding down their week and may be less likely to engage with new emails, especially if they don’t plan to address them until the following week.

Additionally, have a look at must know cold email statistics of 2025 and place your cold emails for better delivarability.

Best Time of Day to Send Cold Emails

Beyond selecting the right day, pinpointing the best time of day to send your cold emails can significantly boost your open rates.

Early Morning (6 AM - 9 AM)

Early morning is a great time to send cold emails, as many professionals check their inboxes as one of their first tasks of the day. Sending your emails early ensures that they’re at the top of the recipient’s inbox, increasing the likelihood that they’ll be seen and opened.

Late Morning (10 AM - 12 PM)

The late morning window is also a good time to send cold emails, particularly to professionals who may have a more structured schedule. By now, many have settled into their day, completed their early morning tasks, and are more open to reading and responding to emails.

Early Afternoon (1 PM - 3 PM)

The early afternoon is another sweet spot for cold email outreach. After lunch, many people tend to check their inboxes before diving back into work, making this a great time to send your emails.

Avoid Evenings and Late Nights

Sending emails late at night or in the evening is less effective, as most people are winding down from their workday. Emails sent during this time will likely be ignored or left unopened.

Industry-Specific Best Times to Send Cold Emails

The best time to send cold emails varies by industry, as different professions have different work patterns and schedules.

B2B Industry

In the B2B sector, sending emails during typical working hours (9 AM to 5 PM) is most effective. Professionals in this industry tend to engage with emails during their workday, especially early in the morning or late in the afternoon.

SaaS Industry

For SaaS (Software as a Service) companies, the best time to send cold emails is often during the early part of the week, particularly in the mornings. SaaS buyers often seek solutions to improve their processes, making them more receptive to well-timed outreach.

E-commerce Industry

For e-commerce businesses, weekends and evenings are more effective times to send emails. Many e-commerce buyers are consumers who check their emails at their own convenience outside of regular working hours.

Top 3 Factors That Influence Cold Email Timing

While general guidelines are helpful, understanding the specific needs of your audience is crucial to optimizing your email outreach. Several factors can influence the best time to send cold emails:

1. Time Zones

When emailing international prospects, it is critical to consider time zones. For example, if you're based in New York but email prospects in London, sending emails during U.S. business hours may result in poor engagement, as the recipients might be done for the day.

To maximize reach, use email scheduling tools to send emails based on the recipient's local time.

2. Audience Behavior

Different buyer personas will engage with their inboxes at different times. For example:

• CEOs and Executives often check their emails early in the morning before the day's meetings start.
• Mid-level Managers might engage more in the mid-morning or early afternoon after their morning tasks are completed. Understanding your audience's behavior allows you to target them when they are most likely to engage.

3. Mobile vs. Desktop Users

Mobile users tend to check their emails more frequently throughout the day, while desktop users might engage more during traditional work hours. According to Campaign Monitor, more than 70% of people read emails on their mobile devices, making it crucial to optimize for mobile responsiveness.

How to Measure and Optimize the Best Time for Cold Emails?

The best way to determine the optimal time to send cold emails is through A/B testing and continuous optimization. Here’s how you can do it:

A/B Testing

Start by sending your cold emails at different times and days of the week to see which combinations yield the highest open and response rates. Segment your email list into different groups and compare performance across time slots.

Analyzing Response Rates

Use cold email marketing platforms like Mailchimp, HubSpot, or Smartlead to track open rates, click-through rates, and engagement patterns. These tools provide valuable insights into when your audience will most likely open and engage with your emails. Smartlead also introduced a new Smartdelivery solution that helps users get insights into where their emails are landing without tracking the now obsolete open rates.

Using Scheduling Tools

Scheduling tools can help automate your email sends, ensuring that emails are sent at the optimal time for each recipient’s time zone. Tools like Mailchimp, Smartlead, and Outreach simplify this process and help you maximize your outreach efforts.

How Smartlead's Timezone Feature Can Maximize Your Email Engagement

One of the biggest challenges of cold email outreach is managing time zones, especially when targeting prospects across multiple regions. That’s where Smartlead’s Timezone Feature comes in.

How to Use the Timezone Feature for Cold Emails

Smartlead's timezone feature allows you to automatically send emails at the optimal time for each lead, regardless of where they are worldwide. Here's how it works:

Add Timezone Data to Your Leads CSV‍

When uploading your leads, include a column labeled 'timezone' in your CSV. Smartlead will use this information to send emails at the right time.

Use the Correct Format‍

Ensure that the timezone values follow the correct format (e.g., Etc/GMT+12, America/New_York).

Seamless Automation‍

Once you’ve set up the timezone data, Smartlead automates the email sending process, ensuring that each prospect receives your message at the ideal time based on their location.

Benefits of Smartlead's Timezone Feature

• Better Engagement: Emails are sent when recipients are most likely to check their inbox, improving open and response rates.
• Increased Conversions: By catching prospects when they are available, you increase your chances of getting a reply or booking a meeting.
• Hassle-Free Management: No need to create multiple campaigns for different time zones. Smartlead handles it all.

Using Smartlead's timezone feature, SalesUP, a B2B sales agency, reported a 20% improvement in their email engagement rates. Leads responded more frequently to well-timed emails.

🗣️ Smart tip: Want to get better engagement and improve deliverability of your cold email campaigns? A dedicated infrastructure is what you need. Smartlead offers SmartServers to take the guesswork out of email deliverability. Get a dedicated IP with your SmartServer to ensure maximum control and reliablity for your campaigns.

Common Mistakes to Avoid in Cold Email Timing

1. Over-sending

Sending too many emails too quickly can cause your emails to be marked as spam (Also, learn about spam trigger words). Spread your cold emails out over a few days to avoid overwhelming recipients.

2. Ignoring Time Zones

Failing to consider the recipient's time zone can lead to poor engagement. Always tailor your sending schedule to the recipient's local time zone.

3. Sending Emails During Holidays

Avoid sending emails during national or local holidays. Many recipients are not checking work emails during these times, which can reduce your open rates.

Conclusion

Sending cold emails at the right time can significantly improve your chances of success. Whether you're reaching out to B2B decision-makers or e-commerce buyers, timing your emails based on data-driven insights can dramatically boost your open rates, response rates, and conversions.

By sending your emails on Tuesdays, Wednesdays, or Thursdays, aiming for early morning or late afternoon, and considering industry-specific best practices, you can maximize the effectiveness of your cold email outreach in 2025.

If you need an excellent automated solution to find the right time zone and help you improve your email deliverability, then you should check out this 14-day free trial and see the results.

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