Internal Email Benchmark Report 2026

What does strong internal communication actually look like?

Every year, ContactMonkey analyzes performance data from internal email campaigns sent through our platform to help answer that question. The result is a set of benchmarks that give communicators a concrete, data-backed picture of what good looks like across industries and where there is room to improve.

One finding holds constant year after year: email remains one of the most indispensable channels in the internal communications toolkit. Not out of inertia, but because nothing else delivers targeted, asynchronous messaging at scale with the accessibility and reach that email provides.

For 2026, we are drawing on performance data from more than 255,000 anonymized internal email campaigns spanning 20+ industries. This year we have also introduced a dedicated section on cultural send patterns, examining how the best day and time to reach employees shifts across regions when send times are converted to the recipient’s local timezone. The findings show that timing is not just a tactical variable. It is a reflection of how different workplaces structure attention and observe the boundaries of the workweek.

Overall benchmarks

These benchmarks reflect averages across 255,000+ internal email campaigns analyzed in this report.

Average read times

44% of employees spend more than nine seconds engaging with internal emails, suggesting strong message engagement across organizations.

Device breakdown

Desktop continues to dominate internal email consumption, reflecting the fact that many employees access internal communications through workplace tools such as Outlook or Office 365. Mobile engagement continues to grow as remote and hybrid work environments expand, while a small percentage of activity comes from unclassified or unknown devices.

About the data

The data for this report was taken directly from anonymized email campaigns sent through ContactMonkey’s internal email platform, covering more than 255,000 campaigns across 20+ industries including Agriculture, Airlines/Aviation, Automotive, Banking, Business Services, Construction, Education, Electrical/Electronic Manufacturing, Financial Services, Food and Beverage, Government, Hospital and Healthcare, Insurance, Legal, Leisure/Travel/Tourism, Logistics and Supply Chain, Manufacturing, Media and Entertainment, Mining and Metals, Not-for-Profit, Pharmaceuticals, Real Estate, Research, Retail, Staffing and HR, Technology, Telecommunications, Transportation and Trucking, and Utilities.

Metrics defined

• Email Open Rate: The percentage of recipients who opened an email out of the total number of recipients.
• Click Rate: The percentage of recipients who clicked a link within an email.
• Click-to-Open Rate (CTOR): The percentage of recipients who clicked a link out of the total number of recipients who opened the email.
• Read time: Glanced (1–3 seconds), Skimmed (>3–9 seconds), Read (>9 seconds).
• Best day to send: The day of the week with the highest concentration of sends across a given region, based on the recipient company’s local timezone.
• Best time to send: The hour of the day with the highest concentration of sends, calculated by converting each send from its recorded EST timestamp to the recipient company’s local timezone.

Company size distribution

Company size is based on Recipient List Size, which reflects the total number of employees or subscribers on a given account’s contact list. The 1,001–5,000 band accounts for 37% of campaigns, and 10,000+ accounts for 35%. Emails were sent predominantly via Office 365 (88%), followed by Outlook Desktop (8%) and Gmail (4%).

Internal email benchmarks by industry

These metrics reflect the averages for internal communication emails sent across the industries analyzed in the 2026 dataset.

Industry	Avg. Open Rate	Avg. Click Rate	Avg. CTOR	Best Day	Best Time
Agriculture	78%	11%	12%	Monday	10:00 AM
Airlines / Aviation	65%	7%	10%	Tuesday	11:00 AM
Automotive	73%	8%	10%	Friday	11:00 AM
Banking	79%	8%	9%	Friday	9:00 AM
Business Services	70%	9%	12%	Wednesday	8:00 AM
Construction	81%	10%	11%	Friday	10:00 AM
Education	73%	8%	9%	Tuesday	10:00 AM
Electrical / Electronic Mfg.	82%	9%	9%	Tuesday	1:00 PM
Financial Services	81%	9%	10%	Friday	11:00 AM
Food and Beverage	75%	8%	9%	Friday	12:00 PM
Government	80%	9%	10%	Friday	9:00 AM
Hospital and Healthcare	72%	9%	9%	Friday	10:00 AM
Insurance	84%	13%	12%	Tuesday	10:00 AM
Legal	86% Highest	10%	10%	Tuesday	11:00 AM
Leisure, Travel and Tourism	72%	10%	12%	Friday	3:00 PM
Logistics and Supply Chain	67%	10%	12%	Friday	11:00 AM
Manufacturing	75%	8%	9%	Friday	9:00 AM
Media and Entertainment	71%	7%	8%	Sunday	12:00 PM
Mining and Metals	79%	9%	9%	Wednesday	1:00 PM
Not-for-Profit	77%	13% Highest	13%	Friday	11:00 AM
Pharmaceuticals	76%	9%	10%	Friday	10:00 AM
Real Estate	86% Highest	10%	9%	Friday	11:00 AM
Research	76%	8%	7%	Monday	11:00 AM
Retail	79%	9%	9%	Monday	10:00 AM
Staffing and HR	74%	9%	10%	Friday	11:00 AM
Technology	73%	9%	10%	Tuesday	10:00 AM
Telecommunications	79%	10%	10%	Tuesday	8:00 AM
Transportation and Trucking	63% Lowest	7%	8%	Monday	9:00 AM
Utilities	82%	9%	11%	Monday	11:00 AM

Email metrics by company size

Engagement metrics vary based on organizational size. Larger organizations often rely heavily on internal email to coordinate communication across departments, teams, and locations.

Company Size	Avg. Open Rate	Avg. Click Rate	Avg. CTOR	Desktop %	Mobile %
1–50 employees	89%	11%	23%	91%	9%
51–200 employees	82%	8%	21%	79%	21%
201–500 employees	80%	10%	20%	80%	20%
501–1,000 employees	82%	11%	20%	86%	14%
1,001–5,000 employees	78%	10%	22%	84%	16%
5,001–10,000 employees	75%	9%	23%	86%	14%
10,000+ employees	73%	8%	23%	83%	17%

Engagement decreases as organizational size increases. Organizations with smaller recipient lists tend to achieve higher open rates because communications are more targeted and employees are closer to leadership messaging. The data is consistent across size segments: as list size grows, open rates decline gradually from 89% at the smallest scale to 73% at the largest. For large enterprises, the answer is not to send less but to segment more deliberately.

Email clicks by ContactMonkey feature

Certain email features significantly improve engagement and interaction.

Emoji reactions encourage quick employee feedback and provide employees with a low-effort way to engage with internal communications. Employee Net Promoter Score surveys embedded in internal emails allow organizations to collect real-time sentiment feedback while increasing employee interaction with internal communications. Beyond the engagement lift, interactive features give communications teams something more valuable than a metric. They generate direct, in-the-moment feedback from employees on the content that matters most.

Industry-based observations: best day and time to send

Send timing varies considerably across industries, and the full 2026 dataset of 255,000+ campaigns reveals five distinct clusters once send timestamps are converted to each recipient company’s local timezone. Best day and best time are both calculated from the complete dataset, which includes full datetime information for every campaign.

Regional observations: best day and time to send

Send timing is rarely a neutral choice. When internal communicators decide to push an email on a Tuesday morning or a Friday afternoon, they are making an implicit assumption about when their audience is most receptive. That assumption tends to be shaped by the sender’s own work culture rather than the recipient’s.

The findings challenge several widely held assumptions about optimal send timings: Friday dominates in Europe, Australia and New Zealand, Asia Pacific, and Africa. Tuesday leads in North America. Thursday leads in the Middle East, consistent with the Gulf-region Sunday-to-Thursday workweek. Monday leads in Latin America.

Region	Best Day	Best Time (Local)	Notes
North America	Tuesday	10:00 AM	10:00 AM leads at 11% of timed sends, followed by 11:00 AM at 11% and 9:00 AM at 10%. Together ~32% of all sends. Distribution drops off meaningfully after 1:00 PM. Weekends = ~12% of sends — sharpest work-to-weekend boundary of any region.
Europe	Friday	3:00 PM	Top hour is 3:00 PM at 11%, followed by 10:00 AM, 2:00 PM, and 11:00 AM each at 10%. Post-lunch window consistent with France, Germany, and the Netherlands where mornings are reserved for focused work. Friday leads at 21%.
Australia & New Zealand	Wednesday	1:00 PM	1:00 PM, 12:00 PM, and 2:00 PM each lead at 8%, with a notably spread distribution. Monday is the weakest weekday at 14%. Weekend = ~14% of sends.
Latin America	Monday	5:00 PM	5:00 PM and 4:00 PM each account for 19% of timed sends; 3:00 PM at 18%. These three hours account for over half of all sends. Monday leads at 24%, stronger than any other region. Weekend = ~4%. Directional (n=204).
Middle East	Thursday	12:00 PM	12:00 PM leads at 13%, followed by 2:00 PM and 3:00 PM at 13% and 12%. Thursday leads at 18%, reflecting Gulf-region Sunday–Thursday workweek. Friday at 9% and Saturday at 7%, consistent with the regional weekend. (n=1,946)
Asia Pacific	Friday	12:00 PM	12:00 PM leads at 9%, followed by 10:00 AM and 11:00 AM at 8% each. Friday leads at 22%. Weekend = ~11%. Covers India and Hong Kong timezone accounts.
Africa	Friday	12:00 PM	12:00 PM leads at 12%, followed by 1:00 PM and 3:00 PM at 11%. Friday leads at 21%. Weekend = ~8%, among the lowest of any region. Covers South Africa and Kenya. Directional (n=294).

Key insights for 2026

1. Internal email engagement remains exceptionally strong

Internal email consistently outperforms external marketing benchmarks by a significant margin. Across all industries analyzed, organizations achieved an average open rate of 76%, reinforcing that internal email remains one of the most dependable channels for reaching employees at scale.

That level of engagement is not accidental. It reflects the weight employees place on workplace communications: company announcements, leadership updates, and operational information that affects their day-to-day work. Industries with the strongest engagement tend to be those where communications carry a direct action requirement. Legal and Real Estate lead with average open rates of 86%, followed by Insurance at 84% and Electrical/Electronic Manufacturing and Utilities both at 82%. At the other end of the spectrum, Transportation and Trucking at 63%, Airlines/Aviation at 65%, and Logistics and Supply Chain at 67% reflect mobile, operational workforces that are less likely to be at a desk when communications arrive.

2. Desktop remains the primary device for internal communications

The way employees read internal email has not shifted as dramatically as broader digital trends might suggest. Approximately 84% of email engagement still occurs on desktop, compared to 16% on mobile, a pattern driven by the central role Outlook and Microsoft 365 play in the daily workday.

Mobile engagement is growing in hybrid and remote environments, but for most organizations desktop remains the dominant reading environment. The industries with the highest mobile share are Transportation and Trucking at 31%, Education at 24%, and Agriculture, Pharmaceuticals, and Utilities all at 21%. These are sectors with field-based, clinical, or non-desk workforces, a reminder that device strategy should follow workforce composition, not industry averages.

3. Click engagement varies widely by industry

Open rates tell a consistent story across industries. Click rates tell a more nuanced one. Not-for-Profit and Insurance lead all industries with average click rates of 13%, followed by Agriculture at 11% and Construction, Legal, Leisure Travel and Tourism, and Logistics and Supply Chain at 10%. These industries share a common characteristic: their internal communications tend to require employee action, whether that is a policy acknowledgment, a compliance deadline, a survey response, or an internal initiative with a next step attached.

At the lower end, Airlines/Aviation and Transportation and Trucking sit at 7% and Media and Entertainment at 7% as well. Lower click rates in these contexts do not signal underperformance. They signal a different kind of communication: high-reach informational sends to audiences that engage passively.

4. Smaller audiences generate stronger engagement

Targeted communications outperform broad ones, and the data is consistent on this point. Organizations with recipient lists of 50 or fewer employees achieve an average open rate of 89%, while those with more than 10,000 employees see that figure fall to 73%. When a message feels relevant to the specific person receiving it, engagement follows.

This has practical implications for how communications teams approach segmentation. Scale has a cost, and audience size is one of the clearest places that cost shows up. For large enterprises, the answer is not to send less but to segment more deliberately.

5. Interactive email features increase employee engagement

Emails that include emoji reactions or embedded surveys consistently generate higher click rates than standard sends. Emoji reactions produce an average click rate of 8% and a click-to-open rate of 10%. eNPS surveys embedded directly in emails push that further, with an average click rate of 11% and a click-to-open rate of 11%, outperforming the overall benchmark on both measures.

The mechanism is straightforward: when employees can respond directly within the email without navigating away or opening a separate tool, they do. Beyond the engagement lift, interactive features give communications teams something more valuable than a metric. They generate direct, in-the-moment feedback from employees on the content that matters most.

6. Getting the timing right is one of the easiest ways to improve engagement

Five timing clusters emerge from the full dataset. Friday dominates for the largest group, covering Automotive, Banking, Construction, Financial Services, Food and Beverage, Government, Hospital and Healthcare, Logistics and Supply Chain, Manufacturing, Not-for-Profit, Pharmaceuticals, Real Estate, and Staffing and HR, most peaking in the morning between 9:00 AM and 12:00 PM. Tuesday is the top day for Airlines/Aviation, Education, Electrical/Electronic Manufacturing, Insurance, Legal, Technology, and Telecommunications. Monday clusters Agriculture, Research, Retail, Transportation and Trucking, and Utilities. Business Services and Mining and Metals peak on Wednesday. Media and Entertainment is the only industry peaking on Sunday, reflecting the seven-day nature of media production.

Regionally, North America peaks on Tuesday at 10:00 AM. Europe peaks on Friday at 3:00 PM. Australia and New Zealand peak on Wednesday at 1:00 PM. Latin America concentrates in the late afternoon on Mondays at 5:00 PM. The Middle East peaks on Thursday at 12:00 PM, reflecting the Gulf-region workweek. Asia Pacific and Africa both peak on Friday at 12:00 PM.

Timing is not a scheduling detail. For organizations with global or distributed workforces, getting it right is one of the most straightforward improvements available.