Gmail vs iRedMail: What are the differences?
What is Gmail? A free web-based e-mail service. An easy to use email app that saves you time and keeps your messages safe. Get your messages instantly via push notifications, read and respond online & offline, and find any message quickly.
What is iRedMail? Open Source Mail Server Solution. It is a free, open source mail server solution for your favourite Linux/BSD. You can deploy an open source, fully fledged, full-featured mail server in several minutes, for free.
Gmail and iRedMail belong to "Email Services" category of the tech stack.