Android 4.x (KitKat) - Alternative Port - Setup Guide

Are you using the latest version of Android?
Please see our Android 5.x (Lollipop) SMTP server setup guide here.

Important Points

  • These instructions are based on the standard Android 4.x (KitKat) mobile device operating system, you may find that the process / buttons to access the menus varies slightly depending on the phone manufacturer.
  • First you need to make sure the email address you will be sending from has been authorised on your account in our Control Panel.
  • They assume your mobile device / email account has already been setup and is collecting email correctly
  • Take a note of any settings you change.
  • Only change the items specified - you should not need to change your incoming email settings.

Step 1

  • From the 'Home Page' of your device go the main app window
  • Click 'Email'
Android - Step 1 - Open the email app

Step 2

  • Go to the Inbox of the account you wish to setup with AuthSMTP
  • Tap the 3 vertical dots in the top right-hand corner
  • Tap 'Settings'
Android - Step 2 - Go into your account settings

Step 3

  • Scroll to the bottom of the section and click on 'Outgoing Settings'
Android - Step 3 - Scroll down to Outgoing Settings

Step 4

  • You will now see your current SMTP settings, make a note of these before making any changes
Android - Step 4 - Make a note of your existing SMTP settings

Step 5

  • For 'SMTP Server' enter the SMTP server we have sent to you in the confirmation email, this would normally be ''
  • For 'Port' enter '2525' (Or 23, 25, 26)
  • For 'Security type' change it to 'None'
  • Tick 'Require sign-in'
  • For 'Username' and 'Password' enter your AuthSMTP username and password - these are case sensitive
  • Click 'Done'
  • Your device will now verify the settings and return you to the 'Account Settings' window
Android - Step 5 - Update SMTP settings

Step 8

  • The configuration is now complete - if you have multiple email accounts setup on your Android mobile /cell phone / device you may also wish to change the settings for each of those so that they use this SMTP Server, you can simply repeat the process on those accounts.
  • All Done!


  • Check you have entered the AuthSMTP username and correctly
  • Check you have registered the from address on your AuthSMTP account, you can do this via the Control Panel
  • Check the Control Panel to see if any errors are being logged against your account