Email Piping: Google Apps

This article covers how to go about configuring the support ticket system to enable importing of new tickets and replies from e-mail accounts hosted with GSuite (formerly known as Google Apps).

Before beginning, we recommend having WHMCS set up and working properly on your web server so as to avoid any unexpected issues.

Configuration

Follow these steps:

Create a GSuite account at https://gsuite.google.com/
Verify the domain where WHMCS is installed with GSuite and complete their setup process.
Log into Admin Console at https://gsuite.google.com/ and create appropriate email accounts that will be using WHMCS ticketing system and receiving tickets and replies.
For all accounts that will be receiving tickets, be sure to enable POP3 and IMAP in Google Mail's webmail interface.
Enable "Enable POP for mail that arrives from now on", otherwise POP will be enabled for all e-mails in the inbox (even older e-mails that may not need to be imported) and will cause all of them to be imported by WHMCS.
Please ensure that Imap-SSL/Pop3-SSL in the PHP installation on the server. Such a change (if needed) will usually require the hosting provider or system administrator to do this. The reason for enabling this is because GSuite services will only accept secured connections.
Under Setup > Support > Support Departments in WHMCS, create at least one department and configure the email account assigned to it like so:

hostname: pop.gmail.com
port: 995
user: youremail@yourdomain.com
pwd: yourpassw0rd

Create a cron job to trigger the /crons/pop.php file every 5 minutes. We have guides on creating cron job in most web hosting control panels here: https://docs.whmcs.com/Cron_Configuration

Once this is done, any new e-mails to the support e-mail addresses should be imported. If they are not, please follow the troubleshooting steps below to determine the cause and correct it as needed.

If you complete these steps then this should work wonderfully.

Troubleshooting

There are a few troubleshooting steps one can take in troubleshooting this, if your set up isn't working properly.

Check your ticket import logs in your WHMCS installation: Utilities > Ticket Mail Import Log

What you are looking for here is to see if your Cron Job is attempting any import at all. If you don't see anything here then your cron job is not successfully attempting a ticket import.

Verify that, for your google email account you created, you have enabled both Pop3 and IMAP.
Verify that you cron job has been created and is running.
If the cron job is running, view the emails that your cron job is creating (you can configure your cron job to email its results to an email address) and see if an error is being generated.
If that command succeeds and no other firewall restrictions are in place, then your connection is unobstructed on your server side.

Connection refused

Check that your server's firewall isn't blocking traffic to google.
To make absolutely sure that your server's firewalls are not blocking your connection attempts, run this telnet command from your server: telnet gmail-pop.l.google.com 995

Too many login failures

Double-check the username and password entered on the Support Department configuration (Setup > Support > Support Departments > Edit) are correct.
Adjust your Gmail account settings to allow less secure apps. This allows external applications such as WHMCS to authenticate to your account via username and password.
Check the Recent Activity page in Gmail to see whether the login attempt was blocked at their end: ‘Suspicious sign in prevented’ email.

Can not authenticate to POP3 server

Refer to the troubleshooting steps for #Too many login failures

Password command failed

Refer to the troubleshooting steps for #Too many login failures

If you are still having issues after verifying the suggested troubleshooting steps above, then you will need to contact Google or visit their discussion forums for Google Apps. It is possible they may be blocking your server from accessing their mail servers.

Final thoughts

WHMCS and Google Apps do play well together and it does work, regardless of what version of Google Apps you are using: Standard, Premier or Education. If you get them working together, you'll be a happy camper. Just be diligent in your troubleshooting.

Workaround for those without SSL

Create another POP3 e-mail account at a different domain name outside Google Apps (that does not require SSL to pick up via POP3), and then have your Google Apps e-mail forward to that e-mail address. Then in WHMCS use POP3 to pickup your mail at the POP3 account that does not require SSL. The user will never notice since they send all e-mails to your Google Apps address, and receive e-mails "from" your Google Apps address (or whatever address you have assigned in WHMCS for that support department).

Documentation