On Windows

1. In Windows XP & 7, "C:\Documents and Users\username\Application Data\Adobe\Lightroom\Modules"
2. In Windows Vista, "C:\Users\username\AppData\Roaming\Adobe\Lightroom\Modules"
3. If you've followed this advice, you can stop reading this message. Nothing will change for you.
4. It has always been possible, though not documented or recommended, to install plug-ins in the folder "C:\Program Files\Adobe\Adobe Photoshop Lightroom#\Modules\".
5. You will either need to move those files manually, or (better yet) move them to the App Data folder instead.

On Mac OS X

1. In Mac/OS X, if the plug-in is provided as a folder ending with ".lrplugin" then you can simply click on it in Finder, and it will install for you.
2. To install either one manually, move the plug-in folder to "/Library/Application Support/Adobe/Lightroom/Modules/ to install for all users, or for just yourself, to the folder of the same name under your home "~/Library/Application Support/Adobe/Lightroom/Modules/"
3. In either case you'll have to create the Modules folder within the Lightroom folder if it's not already there.

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To use the Plug-In Manager to enable/disable plug-ins. Choose File > Plug-In Manager or click the Plug-in Manager button in the Export dialog box.

To use an export plug-in, click the double-pointing arrow ( ) at the far right of the Files On Disk button that straddles the top of the Export dialog box. Then, choose the plug-in from the list.

Setup

1. First thing you must do is add your smtp server/s this can be your local ISP or a public smtp server.
2. smtp port can be left blank for the default port "25" or ssl/tls default is "465 and 587" you can also use a custom port number.
3. If its a secure smtp server type your user-name and password is necessary.

 

Examples for popular SMTP services
smtp.gmail.com username"@gmail.com" Use Authentication: Yes Ports: 25/587	smtp.live.com username"@hotmail.com Use Authentication: Yes Ports: 465/587	smtp.mail.yahoo.com username"@yahoo.com" Use Authentication: Yes Ports: 465/587
Supports: TLS/SSL/STARTTLS	Supports: TLS/SSL/STARTTLS	Supports: TLS/SSL/STARTTLS

New lines

When typing your message you'll probably wish to press the <return> key to start a new line. Unfortunately on a PC this will not work. Instead you need to type in '\n', and this will be converted to a new line. At this time I have not figured out a workaround

Exporting from the export menu

If you've created a preset that uses Export to Mail, then the plugin will export via the menu option (right-click on image -> Export). All previous preset options will be used.

Tracking

The plugin keeps track of which photos it's sent via "Export to Mail". You can then filter for these images using the Filter Bar or Smart Collections, the plug-in also maintains a list of all the recipients of a given photo, so you can see who you've sent the email to.