Sendgrid frappe email

hi
please help me how sent email and how know how much email is send
i new in frappe Could Anybody help me on this?

email send using email alert.you can see how many email sent using “Email Queue”.

how using email alert i show this link
https://discuss.erpnext.com/t/how-configure-sendgrid/28704

but i not know how send email from sendgrid