Email imagery for Hubspot marketing emails

We are a training company and we use Hubspot as our CRM. As we get to grips with using the system its become apparent that we needs some new email designs. The emails are essentially part of the communication with new learners who have signed up to attend a course. So the first part of the workflow might be they get a thanks for filling in the form email. Then maybe a 'here are some details about what to expect' and then a reminder to attend email etc.

We have courses in several different sectors. I have attached the example emails we have used in the past. I had this designed but the designer is busy so i need another faster option. What i need are something similar but:
- One that represents Spectator Safety training (event type imagery)
- One that represents leadership and management
- One that is generic so can be used for anything
- One that represents Personal Training
- One that represents construction

I have attached our logo.

Thanks

Jamie