Office 365 SMTP Settings | The Complete Guide

Office 365 SMTP settings

In this guide, we will break down the Office 365 SMTP settings in a way that’s easy to understand.

Here it is if you are looking for an Office 365 SMTP setting.

office 365 smtp settings

Want to know more about Office 365 settings? 

Keep reading.

In case you are not already aware of what SMTP means, think of SMTP settings as the behind-the-scenes magic that ensures your emails reach their recipients without a hitch. Understanding these settings is vital for your communication, whether you’re sending proposals, following up on leads, or closing deals.

What’s important is that if you are on this page, you are looking to send emails from a device or application that does not have Office 365 built-in. Hence, it will cover everything that will help you understand office 365 smtp settings..

There is no jargon or confusion – just simple steps for configuring your Office 365 SMTP settings.

How does Office 365 SMTP work?

A Simplified Breakdown 

Think of SMTP settings for Office 365  as the backstage crew that ensures your emails reach your clients without any drama. Here’s the lowdown, minus the tech talk.

Where do I find my Office 365 SMTP Settings?

Accessing your SMTP settings for Office 365  might sound like a herculean task, but it is actually pretty simple.

  • Log into your Office 365 account with your email and password. 
  • Navigate to Settings: Look for the gear icon (settings button) in the top right corner. Give it a click! A menu appears.
  • Choose Mail Settings: Go to the ‘Mail’ or ‘Mail Settings’ menu. 
  • On the search bar, type ‘SMTP’. You can check your required settings here. 

Office 365 SMTP Settings Parameters

  • SMTP Server Address:
  • Port: 587 (TLS) or 465 (SSL)
  • Encryption: STARTTLS (if using port 587) or SSL/TLS (if using port 465)
  • Authentication: Yes, requires authentication.
  • Username: Your Office 365 email address (e.g., [email protected])
  • Password: Your Office 365 email account password

Send a Test Email: This helps you confirm that your settings are correct and can send emails without issues.

Check for Delivery: Verify that the test email reaches its destination. If it does, congratulations! Your Office 365 SMTP settings are configured correctly.

To verify that your Office365 SMTP settings are correct and that you can send emails, you can use an online SMTP Test tool. An SMTP test tool asks for the following information:

  • SMTP server
  • Port
  • Email From
  • Email to
  • Username
  • Password
  • Security Type

Here, you need to provide the identical information that you set up in your Office 365. If your SMTP server is running correctly, the tool will show the message “Test Email Sent Successfully”. If it is not, then the message “Failed to send test email” will be shown. The email recipient you designate will also receive an email from the Office 365 SMTP server.

office 365 smtp
office 365 smtp

The image may be showing the SMTP server as Mail Trap, but you can replace it with Office 365. 

This is an overall easier method to test your Office 365 SMTP settings because you don’t have to write an email and only need to provide basic information for testing.

How to set up POP & IMAP for Office 365?

Configuring POP (Post Office Protocol) and IMAP (Internet Message Access Protocol) for Office 365 allows you to access your emails using different devices and email clients. Here’s how to set them up:

Steps for Configuration:

  1. Open your email client (e.g., Outlook, Thunderbird).
  2. Add a new email account and choose “Manual Setup” or “Advanced Settings.”
  3. Select either POP or IMAP based on your preference.
  4. Enter the provided server addresses, ports, encryption methods, and authentication details.
  5. Test the configuration by sending and receiving a test email.

For POP:

Incoming Mail Server (POP3):
Port: 995
Encryption: SSL/TLS
Outgoing Mail Server (SMTP):
Port: 587
Encryption: STARTTLS
Authentication: Yes, it requires authentication.
Username: Your Office 365 email address
Password: Your Office 365 email account password


Incoming Mail Server (IMAP):
Port: 993
Encryption: SSL/TLS
Outgoing Mail Server (SMTP):
Port: 587
Encryption: STARTTLS
Authentication: Yes, it requires authentication.
Username: Your Office 365 email address
Password: Your Office 365 email account password

Remember when using IMAP, your emails are stored on the server. With POP, emails are downloaded to your device.

IMAP is more suitable for accessing emails across multiple devices as it syncs with the server, whereas POP is ideal if you want to store emails locally. Choose the protocol that fits your needs best.

Maximize the capabilities of your Office365 account with Enhance its features significantly and send personalized emails to your contacts effortlessly with features like:

  • AI-powered email content & replies
  • A/B tests five different variants of the email body, subject lines, CTAs, etc.
  • Detailed reporting for better decision-making

You have the flexibility to send unlimited contacts to your prospects with any plan.

Frequently Asked Questions (FAQs)

Can I use Office 365 SMTP settings with third-party email clients or applications? 

You can use Office 365 SMTP settings with other email apps. Just plug in the server address, port, encryption, and login details provided by Office 365. Ensure you enter everything right to link your email app with Office 365.

What should I do if I encounter issues while configuring Office 365 SMTP settings? 

If you encounter issues while configuring Office 365 SMTP settings and are unable to send emails successfully, first double-check the entered information, including the SMTP server address, port, encryption, authentication, username, and password. Ensure that there are no typos or errors in the settings. If the problem persists, contact your IT support or Office 365 service provider for assistance. They can provide specific troubleshooting steps tailored to your setup and resolve any configuration-related issues you might be facing.

What’s the difference between Port 587 (TLS) and Port 465 (SSL) in Office 365 SMTP settings? 

Port 587 (TLS) and Port 465 (SSL) are encryption options. Port 587 uses STARTTLS, upgrading to a secure connection, while Port 465 uses SSL/TLS from the start. Use 587 for modern compatibility, but some older systems might require 465. Check your client’s guidelines for the right choice.

Book call with
Loved it? Spread it across!
Scroll to Top