transmitting vs transmittal

transmitting and transmittal both are nouns.

Word	Noun	Adjective	Verb	Adverb
transmitting	Yes	No	No	No
transmittal	Yes	No	No	No

As nouns, transmitting and transmittal are synonyms defined as:

transmitting and transmittal: the act of sending a message; causing a message to be transmitted

Other synonyms of transmitting include transmission.

transmitting (noun)	transmittal (noun)
the act of sending a message; causing a message to be transmitted	the act of sending a message; causing a message to be transmitted