Webmail only displays last 20 days or maybe last 48 messages

[#1]

Using Thunderbird to download emails but occasionally use webmail however oldest messages in inbox are 20 days old, about 48 in total.

I can't find any setting to change this so would be grateful of any advice.

Thanks

Phil

[#2 · Accepted solution]

@PhilH9 how is your Thunderbird client set download emails, POP3 or IMAP ?

If its POP3 , then is it set to leave messages on server ? and for how long ?

[#3]

Thank you, it uses POP with a SSL/TLS connection.  I can see the setting in Thunderbird set at 21 days so I can change this. Very many thanks. 

[#4]

If you get lots of mail, then be careful that you dont exceed the mailbox quota by leaving mail on the server indefinitely.