Use of the SmtpPlus Module

SmtpPlus is adding the ability to your Magento Store to use a broader variety of Email Server configurations, and to send a copy of all outgoing messages as BCC (Black-Carbon-Copy) to Email Addresses of your choice.
In addition SmtpPlus is adding events triggered before and after a message is being sent. These events may get used by your own Store code to process any functions before or after a email message is sent.

Enable all Email Communication for your Magento Store, use the following setting regardless if you have it installed on Linux or Windows:

System » Configuration » System:

SmtpPlus has its settings here:

System » Configuration » System:

Set this to Yes to use the advanced SMTP Server settings, when set to No the default Magento behaviour for sending Email Messages is used. This allows you to switch between the default Magento way to send Email and the advanced abilities of SmtpPlus without loosing your SmtpPlus settings.

Allows to how Email Messages are to be sent directly to the SMTP Server:

• Directly send to SMTP Server will authenticate (if required) with the SMTP Server and send the messages.

• Login to POP/IMAP Server before sending to SMTP Server will login to the POP/IMAP Server configured below prior to sending the messages to the SMTP Server.

• Do not send Emails will prevent Emails to get sent, however they are being processed by SmtpPlus. This may get used for developing on your Store to “virtually” send Emails. In combination with Keep a copy of all sent Emails the Transactional Emails may still get saved for review.

Use a fully qualified IP-Address or Server Domain Name under which your Email Server is accessible.

Define the Port Number on which your SMTP Server is listening for incoming connections. Default is 25.

Select one of the possible encryption types for communication with the Email Server. Use none for plain and unencrypted communication, SSL or TLS for encrypted communication based on the capabilities of your Email Server.

If your Email Server requires Authentication before accepting Email Messages for sending, then define the Username to be used here. Leave the Username (and Password) blank if your Email Server accepts anonymous connections without authentication.

Define the Password here (together with the Username above) to be used for Authentication on your Email Server, in case Authentication is required on your Server.

Allows to select the type of Authentication to be used with your Email Server:

• Plain, Login
  Both PLAIN and LOGIN authentication methods are used to log in using Base64 Encoded passwords over non-encrypted communication session. From a security viewpoint Base64 encoded passwords are essentially as vulnerable as plain text, due to decoding being pretty easy, without any whatsoever cryptographic protection. This type of authentication however may well get used on TLS/SSL encrypted connections.

• CRAM-MD5
  CRAM-MD5 stands for challenge response authentication mechanism based on HMAC-MD5 MAC algorithm. CRAM-MD5 authentication is used on some types of extended SMTP servers without TLS (Transport Layer Security).

Use this to select your Incoming Mail Server type as POP Server or IMAP Server. This is only required in case you use the Login to POP/IMAP Server before sending to SMTP Server option of Mode of Operation.

All of these settings are the exact counterpart for the POP/IMAP Server settings from the SMTP Settings above. These are only required in case you use the Login to POP/IMAP Server before sending to SMTP Server option of Mode of Operation.

Select the Template to be used for New Email Messages from the selection of Transactional Email Templates. Please create the template for New Email Messages prior to first use of SmtpPlus, and select it here.

Add one or more fully qualified Email Addresses here to be added as BCC (Black-Carbon-Copy) recipients on all outgoing Email Messages. Separate multiple Email Addresses with a comma.
This may get used to receive a copy of any outgoing Email Messasge to your own Email Address for monitoring the outgoing messages, without the Email Address being revealed to the original recipients.

Add Keywords here which shall trigger a BCC (Black-Carbon-Copy) of the Transactional Email when being found in the Subject Line or the Message Body. Use one Keyword or Keyword sequence per Line.

If you add a Email Address to the Keyword inside of square brackets, then that Email Address is being used for the BCC instead of the default Email Address defined in Send BCC of messages containing above Keywords to Email Address.

Serialnumber for
Order Confirmation[some.email@domain.tld]
Shipment Notification

In above example the Keyword Order Confirmation will trigger a BCC to some.email@domain.tld where all other Keywords will trigger a BCC to the default Email Address defined in Send BCC of messages containing above Keywords to Email Address.

Enter the default Email Address where a BCC (Black-Carbon-Copy) of the Email Messages, where one of the above Keywords was found in, shall be sent to. You may use multiple Email Addresses, separated by a colon (',').

Set this to Yes if you want SmtpPlus to log all outgoing Email Messages into the Stores Database. When using this option, you will have access to all sent Email Messages in the Administrator, and you may add the sent Email Messages to the Customer Account.

Set this to Yes (with attachments) to also have File Attachments logged that are sent with the Emails, these are then accessible from the logged email message.

Here some Configuration Examples for selected Email Servers or Services:

You may want to find the original Google advice for configuring Email Clients useful to, available here...