Hi there @goldenspikedk,
Thanks for reaching out!
Although you can manage users’ roles capabilities with the plugin Members, I’m afraid that the capabilities of creating and sending newsletters are enabled/disable altogether. Meaning that if you allow a user to create/edit newsletters they will also be able to send it.
You can see more details here:
https://kb.mailpoet.com/article/205-roles-and-permissions
You’re welcome to add your request as a suggestion here:?https://feedback.mailpoet.com
Our team will take it into account when discussing new features and improvements for the plugin ??
Finally, for an immediate solution, it might be possible to achieve what you want with some custom code. If you need help with custom code, you can reach out to someone from Codeable: https://codeable.io.