Answer:
Do Not resend the email again!
Make sure you have given enough time for a response.
Start the message with a reminder of your last touchpoint.
Step-by-step explanation:
Example :
Hi John,
Just following up with you, to see if you still needed my services. I sent an email last week and haven't gotten a response. If you are still interested please give me a call and we can discuss at your earliest convenience.