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sagar patil 13sagar patil 13 

Messaging.sendEmail() is asynchronous or not?

karthikeyan perumalkarthikeyan perumal
Hello 

Messaging.sendEmail() is asynchronous.. its doest not wait for reply from receiver. its keep on sending multiple emails. 

Synchronous Messages:

Synchronous messaging involves a client that waits for the server to respond to a message. Messages are able to flow in both directions, to and from. Essentially it means that synchronous messaging is a two way communication. i.e. Sender sends a message to receiver and receiver receives this message and gives reply to the sender. Sender will not send another message until get reply from receiver.

Asynchronous Messages:

Asynchronous messaging involves a client that does not wait for a message from the server. An event is used to trigger a message from a server. So even if the client is down , the messaging will complete successfully. Asynchronous Messaging means that, it is a one way communication and the flow of communication is one way only.

Hope its clear. 
Mark Best ANSWER if its clear. 

Thanks
karthik