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What's difference between POP3 and IMAP?

POP3 and IMAP are two different protocols used to access Emails.

POP is Post Office Protocol whereas IMAP is Internet Messaging Access Protocol.


IMAP ensures that Emails are synced across multiple devices.

On the other hand, POP3 downloads Email from a server to a single device and deletes it from the server.


So, if you access your Email on a single device only, such as one cellphone only, then the recommended choice would be POP3.


If you access your Email on more than one device, such as on a cellphone plus a computer, then the recommended choice would be IMAP.

How to setup a POSBUS Email on a Smartphone

How to add your new email address to gMail app on your phone and still keep your old email address/es running.

  • Click on the App gMail
  • You get the option Inbox in the upper left with three – bars on each other just to the left of Inbox. Tap on the three(3) bars.
  • New Menu. Choose Settings
  • New Menu. Choose Add Account
  • New Menu. Choose Other
  • On new screen Enter your email address as your-name@posbus.co.za
  • Then choose Manual Setup
  • New screen. Choose either Personal (POP3) or Personal (IMAP)
  • Enter your Password ……. and choose NEXT
  • Change the server address from posbus.co.za to mail.posbus.co.za and then select NEXT
  • It first validates the entered information, then comes the next screen.
  • Here you need to change the SMTP server’s address from posbus.co.za to mail.posbus.co.za and then select option NEXT
  • New screen. Choose NEXT
  • Then a confirmation screen will appear that says your email account is in effect. Choose once again NEXT
Thats it!!!!