Group email - solution to the max 100 problem
- Go to Deals - List view
- Create a filter with the customers you want to email. Plus also include into the filter Deal -> Email messages count -> is -> 0 (or whatever number you are looking for)
- Bulk select all - Send group email - accept the notification saying max 100 emails is possible.
- Wait until all 100 are sent. Reload the Deals - List view with this filter. You will only see deals where the email HAS NOT BEEN sent.