Automated Email Sequence for non-responses?...

Automated Email Sequence for non-responses?...

Here's my scenario...
I'm going to start an outbound sales email campaign, so I will be making the initial outreach to the prospect. I would like to automate an email sequence for those who DO NOT respond.

it would look something like this:
1. Send initial email
2. If no response after 3 days, send follow up email.
3. If no response in 4 days, send follow up email.
4. If no response in 4 days, send final email.

Any idea how I can do this?