Expression: "With reference to the appended email please be..."

[Tom]

Hi

Does the following sound formal and natural? Any mistakes--especially in the red part?

[Mister Micawber]

.
With reference to the email appended below, please be informed that the material for the Induction Program cannot be sent by email as its size exceeds the limit.
.
_________________
Canadian-American native speaker
who teaches English for a living at Mister Micawber's
ESL cafe: Interview with Mister Micawber