Backing Up Webmail emails ?

[Paul S4]

My email is , and has been for a while, solely Webmail ( Talktalk ).

While this is fine if my computer ( Apple MacMini ) stops working as I can access them from any other device.
My question is : can I backup/ download my stored emails etc so I have copies if anything happens to the Talktalk server ?

PS I am not a computer techie !!

Any advice welcome !

[Paul S4]

Thanks for all the replies.

I would quite like to keep the talktalk email address because I have had it for years.

If I can get talktalk to work on my Mac ( I had problems a couple of years ago hence my using webmail ) so I would not have to rely upon the ISP would that be any more secure ?

[Paul S4]

Apologies as that question has been answered above !

But I presume my emails would be more secure that way ?