Question

a quick way of sending urgent messages through internet.​

Answer 1

Answer:

Hey

Explanation:

Email

At first they used telephone for call... but know it is of no use.....

Answer 2

Answer:

SMS (short message service) is a text messaging service component of most telephone, Internet, and mobile device systems. It uses standardized communication protocols to enable mobile devices to exchange short text messages. An intermediary service can facilitate a text-to-voice conversion to be sent to landlines.