Summing up matrices in a list

Dear all,
I think that my question is very simple but I failed to solve it. 
I have a list which elements are matrices like this:
 

mylist  

[[1]]
     [,1] [,2] [,3]
[1,]    1    3    5
[2,]    2    4    6

[[2]]
     [,1] [,2] [,3]
[1,]    7    9   11
[2,]    8   10   12

I'd like to create a matrix M<-mylist[[1]]+mylist[[2]]
     [,1] [,2] [,3]
[1,]    8   12   16
[2,]   10   14   18

Is there a way to create M without looping? 
Thanks a lot, 

do.call("+", mylist)