You can find your SMTP server on your iPhone by going to Settings → Mail → Accounts → select your email account → Account → SMTP, where your outgoing mail server details (server name, port, security type, and authentication) are listed. This section shows the SMTP server your iPhone uses to send emails, whether your account is Gmail, Outlook, Yahoo, iCloud, or a custom domain email.
Now let’s break this down step by step and explain everything you need to know about SMTP servers on an iPhone, including what they are, why they matter, and how to troubleshoot common issues.
Why You Might Need to Find Your SMTP Server on iPhone
There are several common reasons why users look for SMTP settings on their iPhone:
Email is not sending, but receiving works
You are setting up an email account manually
You need SMTP details for another app or device
Your hosting provider asked for SMTP information
You are troubleshooting outgoing mail errors
You changed your email password
Knowing where to find your SMTP server saves time and helps you fix email problems quickly.
Step-by-Step: How to Find Your SMTP Server on iPhone
Follow these steps carefully on your iPhone:
Step 1: Open Settings
Tap the Settings app on your iPhone.
Step 2: Go to Mail
Scroll down and tap Mail.
Step 3: Tap Accounts
Select Accounts to see all email accounts added to your iPhone.
Step 4: Choose Your Email Account
Tap the email account you want to check (Gmail, Outlook, Yahoo, iCloud, or custom email).
Step 5: Tap Account Settings
Tap Account again to open detailed settings.
Step 6: Open SMTP Settings
Tap SMTP under the Outgoing Mail Server section.
Here you will see:
Primary SMTP server
Other available SMTP servers
Server status (On/Off)
Tap the Primary Server to view full SMTP details.
What SMTP Information You’ll See on iPhone
Inside the SMTP server settings, you’ll typically find:
Server Name (example: smtp.gmail.com)
Host Name
User Name
Password (hidden for security)
Port Number (commonly 465 or 587)
SSL / TLS (On or Off)
Authentication (Password or OAuth)
These are the exact details required to configure email sending on any device or email client.
SMTP Server Settings for Popular Email Providers
Here are common SMTP server addresses you may see on your iPhone:
Gmail SMTP
Server:
smtp.gmail.comPort: 465 (SSL) or 587 (TLS)
Authentication: Yes
Outlook / Hotmail SMTP
Server:
smtp.office365.comPort: 587
Authentication: Yes
Yahoo Mail SMTP
Server:
smtp.mail.yahoo.comPort: 465 or 587
Authentication: Yes
iCloud Mail SMTP
Server:
smtp.mail.me.comPort: 587
Authentication: Yes
If you use a custom domain email (like [email protected]), the SMTP server usually comes from your hosting provider.
How to Find SMTP for a Custom Domain Email on iPhone
If your email is hosted with a web hosting company:
Go to Settings → Mail → Accounts
Select your custom email account
Tap SMTP
Check the Primary Server
Note the server name (often mail.yourdomain.com)
If it’s not listed clearly, you can also:
Check your hosting provider’s email documentation
Log in to your webmail (cPanel, Webmail, Roundcube)
Contact your hosting support team
How to Edit SMTP Settings on iPhone
Sometimes you need to update SMTP details manually.
To edit SMTP:
Open SMTP → Primary Server
Tap the existing server
Update server name, username, or password
Ensure Use SSL is enabled
Save changes
Be careful—incorrect settings can stop outgoing email completely.
Common SMTP Problems on iPhone (and Fixes)
Emails Not Sending
Possible causes:
Wrong SMTP server
Incorrect password
SSL disabled
Port blocked by network
Fix:
Re-enter password
Enable SSL
Use port 587 instead of 465
SMTP Authentication Error
This happens when:
Password is incorrect
Two-factor authentication is enabled
App-specific password is required
Fix:
Generate an app password (for Gmail or iCloud)
Update password in SMTP settings
Works on Wi-Fi but not on mobile data
Some networks block SMTP ports.
Fix:
Use port 587 with TLS
Contact your email provider
How to Reset SMTP Settings on iPhone
If nothing works:
Remove the email account from Mail → Accounts
Restart your iPhone
Add the email account again
Let iOS auto-configure SMTP settings
This often fixes hidden configuration errors.
Security Tips for SMTP on iPhone
To keep your email secure:
Always use SSL/TLS
Never disable authentication
Avoid public Wi-Fi when sending sensitive emails
Use strong, unique passwords
Enable two-factor authentication when available
Final Thoughts
Finding your SMTP server on an iPhone is simple once you know where to look. By navigating to Settings → Mail → Accounts → SMTP, you can view and manage your outgoing mail server in minutes. Whether you use Gmail, Outlook, iCloud, or a custom domain email, these settings are essential for reliable email delivery.
Understanding SMTP not only helps you fix email problems but also gives you more control over your email setup across devices and applications.
