Why we can send emails from gmail to yahoo or outlook but cannot do the same with instant messaging apps like WhatsApp to Messenger or iMessage?

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Why we can send emails from gmail to yahoo or outlook but cannot do the same with instant messaging apps like WhatsApp to Messenger or iMessage?

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Anonymous 0 Comments

There’s one protocol, called SMTP, that sends email. There’s another, SMS, that does text messages. While they are both for messaging, a person who sends a message must choose which format.
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