Their support for incoming messages is pretty slick, especially in that they provide a message body that strips out signatures and replies. At Posterous, we managed that mechanism ourselves, and it was really hellish – it's great to be able to offload that responsibility for Kinsights.
That feature alone made us switch from SendGrid, and the more reasonable price point for our stage just sweetened the pot.
That feature alone made us switch from SendGrid, and the more reasonable price point for our stage just sweetened the pot.