To find your SMTP server on Windows 10, you usually need to check the email account settings inside the email application you’re using (such as Outlook or the Windows Mail app) or refer to your email provider’s official SMTP details. Windows 10 itself does not assign an SMTP server; instead, the SMTP server is provided by your email service (like Gmail, Outlook, Yahoo, or a custom domain host) and configured within your email client.
Now, let’s go deeper and describe everything step by step.
What Is an SMTP Server?
SMTP stands for Simple Mail Transfer Protocol. It is the technology responsible for sending emails from your device to the recipient’s mail server. While IMAP or POP3 handles receiving emails, SMTP is only for sending.
On Windows 10, SMTP settings are used by:
- Microsoft Outlook
- Windows 10 Mail app
- Thunderbird
- Third-party email clients
- Software that sends email notifications
Without the correct SMTP server details, your emails will fail to send.
Important Thing to Know About Windows 10 and SMTP
Windows 10 does not have a built-in SMTP server. Instead:
- Your email provider supplies the SMTP server
- Windows 10 simply stores and uses those details in your email app
So when people ask, “How do I find my SMTP server on Windows 10?”, what they really mean is:
How do I find the SMTP server settings for my email account on a Windows 10 computer?
How Do I Find My SMTP Server on Windows 10? Step-by-Step Guide
Method 1: Find SMTP Server Using the Windows 10 Mail App
If you use the default Mail app in Windows 10, follow these steps:
Step-1: Open the Mail App
- Click the Start menu
- Search for Mail
- Open the app
Step-2: Go to Account Settings
- Click the gear icon (setting) at the bottom left
- Select Manage accounts
- Click on your email account
Step-3: Open Advanced Settings
- Click Change mailbox sync settings
- Scroll down and click Advanced mailbox settings
Step-4: View SMTP Server Details
Here you will see:
- SMTP server address
- Port number
- Security type (SSL/TLS)
- Authentication requirements
This is your SMTP configuration currently used on Windows 10.
Method 2: Find SMTP Server in Microsoft Outlook (Windows 10)
If you’re using Microsoft Outlook, this is one of the most reliable ways.
Step-1: Open Outlook
- Launch Outlook on your Windows 10 PC
Step-2: Open Account Settings
- Click File
- Select Account Settings
- Click Account Settings again from the dropdown
Step-3: Select Your Email Account
- Choose your email address
- Click Change
Step-4: View SMTP Server
On the main screen, you’ll see:
- Outgoing mail server (SMTP)
For more details:
- Click More Settings
- Open the Advanced tab
- View SMTP port and encryption
Method 3: Check SMTP Server via Email Provider Website
If you don’t have access to your email app settings, you can find SMTP details directly from your provider.
Common SMTP Servers
Gmail
- SMTP server: smtp.gmail.com
- Port: 587 (TLS) or 465 (SSL)
Outlook / Hotmail
- SMTP server: smtp.office365.com
- Port: 587
Yahoo Mail
- SMTP server: smtp.mail.yahoo.com
- Port: 465 or 587
Custom Domain Email
- SMTP server often looks like:
- mail.yourdomain.com
- smtp.yourdomain.com
- SMTP server often looks like:
Always confirm from your hosting provider if you’re using business email.
Method 4: Find SMTP Server Using Control Panel (Advanced)
If Outlook is installed, Windows stores email profiles in the Control Panel.
Steps:
- Open Control Panel
- Set view to Small icons
- Click Mail
- Click Email Accounts
- Select your account
- Click Change
You’ll now see your SMTP server and related settings.
What SMTP Information You Need (Checklist)
When configuring or finding your SMTP server, make sure you have:
- SMTP server address
- Port number
- Encryption type (SSL/TLS/STARTTLS)
- Username (usually full email address)
- Password
- Authentication enabled
Missing any of these can cause sending errors.
Common SMTP Problems on Windows 10
Emails Not Sending
This usually happens due to:
- Wrong SMTP server
- Incorrect port number
- Authentication disabled
- Firewall or antivirus blocking SMTP
Authentication Errors
Fix by ensuring:
- “My outgoing server requires authentication” is enabled
- Username and password are correct
Blocked Port
Some ISPs block port 25. Use:
- Port 587 or 465 instead
How to Test Your SMTP Server on Windows 10
After finding your SMTP server:
- Send a test email from your email app
- Watch for error messages
- Check sent folder
- Verify credentials if sending fails
For advanced users, SMTP can also be tested using:
- Telnet
- Email testing tools
- SMTP diagnostic software
Security Tips When Using SMTP on Windows 10
- Always use SSL or TLS
- Never use plain-text authentication
- Avoid public Wi-Fi when sending emails
- Use app passwords for Gmail or Outlook
- Enable 2-step verification where possible
When You Might Need SMTP Server Details
You’ll need SMTP settings when:
- Setting up a new email client
- Using contact forms on websites
- Sending emails from software or scripts
- Configuring email alerts
- Migrating email accounts
- Troubleshooting sending errors
Final Thoughts
Finding your SMTP server on Windows 10 is straightforward once you understand that Windows itself doesn’t provide SMTP — your email service does. Whether you’re using the Windows Mail app, Outlook, or another client, your SMTP server details are always available inside account settings or through your email provider.
Knowing where to find and how to configure SMTP settings can save hours of troubleshooting and ensure reliable email delivery from your Windows 10 system.
