Sending email from various domains
- by IMHO
We are building hosted software service that is used by multiple customers.
These customers want to communicate with their customers (end customer). So, today we send it from our domain: example.com
However, we would like to send email to come from their specific domains. When we put their customer emails in Reply-To - it shows up as "on behalf" in clients like outlook.
What are the ways to send email from their domain without installing software on their network?