How to send email via SMTP with Office365? In this guide, we’ll explore the basics of sending emails via SMTP with Office 365, highlighting key considerations along the way.
Key Considerations for Email Sending:
- Ensure the SMTP is activated for the mailbox.
- Is MFA Enabled? SMTP may require MFA to be disabled for seamless operation.
- Consider disabling the security defaults policy since it blocks SMTP.
- Check the TLS compatibility.
SMTP server settings for Exchange Online / Office 365?
- Port: 587
- TLS: TLS or Starttls
- SMTP Server: smtp.office365.com
If you say I can’t send email over SMTP, follow the steps below.
1- Ensure the SMTP is activated for the mailbox.
Navigate to the Users>>Active users menu in the admin center. Choose the user and click on the mail tab. Here you will see the option Manage email apps. Enable the SMTP here.
2- Disable MFA for the user
Navigate to the Users>>Active users menu in the admin center. Open the Multi-factor authentication menu and check whether the MFA disabled for the user.
3- Consider disabling the security defaults
Navigate to the Properties menu in the Identity (Azure AD) admin center. Here you can disable the Security Defaults
4- Check the TLS compatibility.
If your application use legacy TLS versions, enable Use of the legacy TLS option from Exchange Admin Center>>Settings>>Mailflow menu.
By following these steps diligently, you can easily send emails via SMTP with Office 365.
