Implement as SMS gateway on my website (and an send as email button)

Read brief!! On my website, I want to implement two buttons: 1. Send as Email (when they click this button, a small popup where you can write your email comes up. Then you write your email and click send) 2. Send as SMS (same as email you just use your phone number instead) What will be sent is a link. (A link that I have decided in advance, like this: [login to view URL] Together with a text saying something like: Visit our beautiful virtual tour by clicking this link: [login to view URL] ) I am sure there are simple APIs for this, like this as an example: [login to view URL] Or already created plugins.