A positive integer is said to be an exponential divisor or an e-divisor of if ππ β£ ππ for all prime divisors ππ of π. In addition, 1 is an e-divisor of 1. It is easy to see that β€+ is a poset under the e-divisibility relation. Utilizing this observation we show that e-convolution of arithmetical functions is an example of the convolution of incidence functions of posets. We also note that the identity, units and the MΓΆbius function are preserved in this process.