mailmail3 command not found

Introduction

When you run more command in linux terminal / console, you get the following error message

mailmail3: command not found

or when using sudo you get the following error message

sudo: mailmail3: command not found

Solutions to mailmail3: command not found

How To Fix mailmail3: command not found in Ubuntu / Debian / Kali Linux / Raspbian

In Ubuntu mailmail3 is provided by python3-twisted package.

python3-twisted is:

It includes a web server, a telnet server, a multiplayer RPG engine, a generic client and server for remote object access, and APIs for creating new protocols.

To fix this problem, we can install more using the command below.

sudo apt-get -y install python3-twisted

This command might take some time to finish depending on your machine internet connection.

You can also use apt command to install python3-twisted.

sudo apt -y install python3-twisted

Or if you have aptitude installed you can use the following command.

sudo aptitude install python3-twisted

Summary

In this tutorial we learn how to fix mailmail3 command not found error in Ubuntu / Debian / Kali Linux or Raspbian distribution.