How to embeded png in the body of mail using mailr

Question

i have a code that sends mail using rstudio In this mail, I want to insert.png image in the body of the mail I have no clue how to get this done

here is my script below.

library(mailR)

sender <- "***********@gmail.com"
  recipients <- c("***********@gmail.com")
  send.mail(from = sender,
            to = recipients,
            subject = "Testing",
            body =,
            smtp = list(host.name = "smtp.gmail.com", port = 465, 
                        user.name = "*************@gmal.com",            
                        passwd = "**************", ssl = TRUE),
            authenticate = TRUE,
            send = TRUE)

The png image is located in my download folder

"C:/Users/Guest 1/Desktop/Aut/table.testing_1.png"

I want the final output to look like this in the body of the mail

Thank you