Different possibilities

It is a good idea to compare a computer to a smartphone and to a tablet no matter what software you are using.  The computer is more powerful but that can mean there are more options and tools available with a computer.  For instance, with Gmail, the interface (the layout of what the user sees) includes some handy tools that are missing on other types of devices.  You can see how many messages are in the Inbox, how many of them are "Unread" (unopened), immediately see if you have messages marked as spam.  I like to delete messages starting from the oldest ones in the Inbox when the total Inbox contains 1,000 or more emails.  That is rather quick and easily one on a  computer.