Yes, it is possible.
You have to configure the IMAP mailbox for the "reply to" email address.
Look at Global Parameters in the IMAP part, and user user manual [F1] for help on how to configure parameters.

Hi There,
I thought this was solved, but none of the emails are actually being saved in the activities.

Here are my IMAP settings, so I am not sure what I am doing wrong?

Your help would be greatly appreciated.

First, "email input check cron delay" is set to -1 : this disables the feature.

Also, imap host must be defined as an IMAP mailbox (see user manual).
For instance : {imap.gmail.com:993/imap/ssl}INBOX

Thank you for the quick reply.

What is the default setting for "email input check cron delay" that I should put.

The user manual only refers to gmail IMAP mailbox. For a non-technical person, like myself, it makes it very difficult to know what to put here. Is there any more detailed instructions/information I can have to help me work out how to define it?

I have tried to create the host connection string, but it still doesn't seem to work. Here is a copy of the string

{vps--...com:993/imap/ssl}@

Is this the way it is meant to be displayed

What is the default setting for "email input check cron delay" that I should put.

seconds between each chack of the mailbox. 60 for a check every minute.

The user manual only refers to gmail IMAP mailbox. For a non-technical person, like myself, it makes it very difficult to know what to put here.

The user manual gives the example I gave.

Is there any more detailed instructions/information I can have to help me work out how to define it?

You can find detail at the php imap_open instruction : http://php.net/manual/fr/function.imap-open.php

Is this the way it is meant to be displayed

No, it would rather be :
{--...:993/imap/ssl}INBOX

It still does not seem to work for me. I don't know what I am doing wrong. The php link you sent me was in French. After a while I worked out how to show it in english, but this is more for the technical savvy.

I am not sure what to do here now. Your further assistance would be appreciated.

I have checked the username, I have checked the password, but it just doesn't work. When I reply to an email that came from ProjeQtor, my reply does not get attached to that specific activity in the notes section.

Please help as this would be a very useful feature for me, if I can get it working.

Important step : after configuration change, you need to STOP and START the CRON process...
Did you do it after each test ?

Also set debugLevel to 3 in parameters.php file (re-STOP/START CRON process)
You should get extra information in log file.

I didn't know i had to do this. Thank you for the instructions. How/where do i stop and start the Cron job?

Where do I find the parameters file.

How/where do i stop and start the Cron job?

On Administration screen

Where do I find the parameters file.

Default location is /files/config, but you should have changed it.
Location is defined in /tool/parametersLocation.php

I have all that you said and it is still not working. I have attached the log file here.

You provided Apache log file.
I need ProjeQtOr log file.

Here is the correct log file

Error is clear :

2015-12-24 00:08:18.977 ** ERROR ** ERROR **
2015-12-24 00:08:18.977 ** ERROR ** on file '/home//public_html//model/ImapMailbox.php' at line (82)
2015-12-24 00:08:18.977 ** ERROR ** cause = imap_open(): Couldn't open stream {--...***:993/imap/ssl}INBOX
2015-12-24 00:08:18.977 ===== TRACE ===== Cron::run() - Error on checkEmails()

You could not connect to mailbox.
So either this is not a valid mailbox of imapserver refuses connection or you have some network issue.
Contact your mail server administrator for information.