Hi Egemesh,
You can download the email connector module and then configure it in your system,
Now, put a button, from where you want to send the email,
On the button, call a microflow,
In the microflow, use a ‘create Object’ activity and create an object of ‘Email message’ , Now use a retrieve activity and retrieve the first object of ‘Email account’, Now, you use a ‘Send email’ activity to send email and, you are good to go,
Let me know, if you have any issues,
Hope it helps!!