To figure out your email cost:
- Log into your SMTP provider, navigate to the Plan or Billing section and look for a description of how many emails are included in your plan.
- Once know the amount of emails in your plan, divide that by the cost of your plan and the result will be your email cost.
For example, the $35/month Mailgun plan includes 50,000 emails so 35/50000= email cost of $0.0007