How to list emails in a folder, e.g. Inbox, on multiple pages when using Zoho mail webpage?

How to list emails in a folder, e.g. Inbox, on multiple pages when using Zoho mail webpage?

Something as shown in the figure. There are totally 50 emails in Sent folder. If "Mail per page" equals 20, then the Sent folder is split into 3 pages. When I wander through Sent folder, I can just select a specific page to jump to. 

BTW, it seems that I have to continuously scroll to wander through a folder in Zoho mailbox, which will blow my memory.

p.s.
This question is unrelated to the search function provided by Zoho mail web.