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If you’re using Outlook, you might wonder about its email limits. Knowing these limits for personal use or business helps you avoid disruptions. Let’s break down what you need to know.
What is Email Sending Limits?
Emails Sending Limit refer to the maximum number of emails you can send in a given period. These limits are set to prevent abuse and ensure the system runs smoothly. Think of it as a speed limit on a highway—designed to keep traffic flowing safely.

Why Are There Limits?
Limits help protect email servers from overload. Without them, issues like “server cannot be found” errors could arise due to spam or excessive emails clogging the system. These rules ensure a smoother experience for all users.
Outlook.com Limits
Daily Sending Limits
For Outlook.com users, the Email sending limit is about 300 emails per day. This helps manage the load on the server and reduces the risk of spam. So, keep this number in mind if you send newsletters or invites.
Recipient Limits per Email
Outlook.com also limits the number of recipients you can include in a single email. Typically, you can add up to 100 recipients per email. If you need to reach more people, send separate emails or use a mailing list service.
Microsoft 365 and Exchange Online Limits
Higher Sending Limits
Microsoft 365 and Exchange Online offer higher limits than Outlook.com. With these services, you can send up to 10,000 emails daily, which is especially useful for businesses that must send large emails.
Recipient Limits per Day
In addition to daily sending limits, these services often allow up to 10,000 recipients per day. This flexibility is crucial for large-scale marketing campaigns or communication with a large team.
How to Manage Email Limits?
Tips for Avoiding Limits
To stay within limits:
- Plan your email campaigns carefully.
- Avoid sending too many emails simultaneously and use tools to schedule emails over time.
- Keep your recipient lists clean to prevent hitting limits.
What to Do if You Hit the Limit?
If you reach your sending limit, you must wait until the next day to resume sending emails.
If hitting the limit becomes a frequent issue, consider upgrading your email service plan or checking the configuration of your incoming mail server for Outlook to ensure smooth email management.
Conclusion
Understanding Outlook’s email limits helps you manage your communication better. Whether you’re using Outlook.com or Microsoft 365, knowing these limits ensures you stay within boundaries and avoid disruptions.
FAQs
1. What happens if I exceed my email limit on Outlook?
You will need to wait until the next day to resume sending emails. Frequent exceedance might require upgrading your plan.
2. Can I increase the limits for sending emails in Outlook?
Limits are fixed for personal accounts. Upgrading to Microsoft 365 or Exchange Online can provide higher limits for business accounts.
3. How can I check my current Emails Sending Limit?
Outlook doesn’t provide a direct way to check limits, but you can monitor your sending activity and contact support if you encounter issues.
4. Are there limits on email attachments in Outlook?
Yes, Outlook has limits on email attachments, typically around 20 MB per email.
5. What should I do if my email sending is frequently blocked?
Check your email usage patterns and consider using professional email services for higher limits and better management.
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