imap4d command not found

Introduction

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

imap4d: command not found

or when using sudo you get the following error message

sudo: imap4d: command not found

Solutions to imap4d: command not found

How To Fix imap4d: command not found in Ubuntu / Debian / Kali Linux / Raspbian

In Ubuntu imap4d is provided by mailutils-imap4d package.

mailutils-imap4d is:

GNU Mailutils is a rich and powerful protocol-independent mail framework. It contains a series of useful mail libraries, clients, and servers.

The GNU mailutils IMAP4 daemon implements the Internet Message Access Protocol, version 4rev1 as per RFC 2060. It supports the “Namespace” capability and GSSAPI authentication mechanism. It is able to get the authentication information from the system user database as well as from a SQL database of arbitrary structure. The PAM framework can also be used for authentication purposes. Additionally, mailutils imap4d supports virtual mail domains and has TLS support via GNUtls. GNU mailutils supports the mbox, MH, Maildir and dotmail mailbox formats.

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

sudo apt-get -y install mailutils-imap4d

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

You can also use apt command to install mailutils-imap4d.

sudo apt -y install mailutils-imap4d

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

sudo aptitude install mailutils-imap4d

Summary

In this tutorial we learn how to fix imap4d command not found error in Ubuntu / Debian / Kali Linux or Raspbian distribution.