There are many ways of writing a good copy. Following are some tips to keep in mind while writing a copy:
The formation of the copy should be clear and brief with around 80-100 words
Always try to build trust with the prospect
Explain your prospect the purpose behind the email
Tell the prospect what is beneficial for them in this email
At last, always mention call to action, to trigger the prospect's response
If you found this helpful, you will like to check out our blogpost about this topic.