Dear Carly
I am not sure about your requirement. Any dispsatch of MSD/SDS is done usinhg CVD1 (as a transaction (many subprocesses are needed in background. So the answer to your header is:
No; if you would like to use EHS as "dispatch" tool; you need CVD1 (and anything around that).
Regardingyour requirement:
"We would like to trigger an email of the Material Safety Data Sheet either at the time of Delivery or PGI every time"; the sentence is "misleading" a liitle bit
The story is the other way around: First you need to define which SD processe trigger SDS distribution; if you have defined that you need the context; this is mentioned as well above. E.g.for Materials going to US you need only to dispatch once per 12 month a SDS; if same material (in combinaiton with lot of other criteria) is dispatched to US in the same "12 month" period no SDS shipment takes place.
The situation is different for other countries. Now we go to detals: You need to "differentiate" the "first" dispatch and the "relevant" subprocess. But I do not want to go in details.
Short message is: if you properly set up your system EHS can dispatch MSDS/SDS as
a.).FAX
b.) paper
c.) per eMail
PLease read cross Online help; topic is as well discusssed often; may be check:
SAP EHS Management for Beginners
C.B.