my galaxy tab s only showing todays emails in outlook, email received from same account is ok on pc and smartphone Email inbox only showing todays email not those received yesterday or last week etc. Tried settings to increase number of messages etc but no joy. The same account working fine on pc and smartphone problem only on my tablet
I can almost guarantee it's a mapping issue. Your PC is set up to pull emails off of the server they are originally sent to and they are then stored on the computer. (Outlook is configured this way by default, but nowadays will email on our cellphones it really should be changed). This deletes them off the server, so when you go to check your emails on your phone, the old messages are no longer in the server and the android email client is reflecting that. Your iPhone is likely set up to not delete these messages when they are deleted off the server like your android is (I know this is what my iPad always did). Change the email fetching settings your computer from POP3 to IMAP if possible. Make sure they are set to mirror each other and not to delete the original once they are fetched. If you can't use IMAP, this setting should technically still exist in POP3, but I've fought with it in the past.

Once you do this, you should notice tomorrow that the emails are no longer disappearing.