Is there a free mass messaging API platform?

Q: "Is there a free API platform for mass messaging?" I think the answer is: no.

This is like asking, "Is there a free lunch in the world?"

Obviously, the answer is well known.

Some people may say that "nothing is absolute". Of course, there will be free food and drink occasionally, but there must be a price. As Zweig commented on Marie Antoinette, all the gifts given by fate have already been priced in the dark.

"There is no such thing as a free lunch" is not empty talk. Only equivalent exchange is the essence of reality. Violation of this law is bound to be "against the sky."