How to send books to Kobo device asynchronously?

Hi,
I'm just coming from Kindle to Kobo.
On Kindle I usually send books to my device by attaching the book to an email being sent to myemail@kindle.com.

I bought this Aura One to read pdf files. And plugging the Kobo into my laptop via USB every time I need to transfer files is quite inconvenient. Is there any similar way to the one provided by Kindle?

Thanks.