Email:
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[[MESSAGE]] - message entered by guest in app.
[[HEADER]] - email header html block set in event manager.
[[FOOTER]] - email footer html block set in event manager.
[[UNIQUE_URL]] - generated unique url, if enabled
[[UNIQUE_URL_THUMBNAIL]] - thumbnail of first image

[[CONTENT]] - replaced with image thumbnails and unique url link if enabled.

[[IMAGES]]
<a href="[[IMAGE_URL]]"><img src="[[IMAGE_SOURCE]]" alt="[[IMAGE_NAME]]"></a><br/><br/>
[[/IMAGES]]

html code used for every image, for [[CONTENT]] block

[[IMAGE_URL]] - link when unique url or youtube video uploading is enabled.
[[IMAGE_SOURCE]] - image thumbnail attached to email.
[[IMAGE_NAME]] - image file name.



[[UNIQUE_URL_ENCODED]] - encoded version of the generated unique url, to be used in sharing buttons embedded in email

Code used for buttons:
<a href="http://login.partyuploads.com/Pages/SharePage.aspx?emailId=[[EMAIL_ID]]&url=[[UNIQUE_URL_ENCODED]]&shareOption=3" target="_blank" ><img src="https://s3.amazonaws.com/ppuassets/email/facebook-icon.png" border="0" alt="Facebook" /></a>

<a href="http://login.partyuploads.com/Pages/SharePage.aspx?emailId=[[EMAIL_ID]]&url=[[UNIQUE_URL_ENCODED]]&shareOption=4" target="_blank" ><img src="https://s3.amazonaws.com/ppuassets/email/twitter-icon.png" border="0" alt="Twitter" /></a>

<a href="http://login.partyuploads.com/Pages/SharePage.aspx?emailId=[[EMAIL_ID]]&url=[[UNIQUE_URL_ENCODED]]&shareOption=5" target="_blank"  ><img src="https://s3.amazonaws.com/ppuassets/email/google-plus-icon.png" border="0" alt="Google+" /></a>

Note: this is used only if "add share links to bottom of email" option is enabled for email. 

If no changes are required to the share buttons, tag [[ADDTHIS_FOLLOW_BUTTONS]] should be used instead of the above buttons code.

The only change that should be made to the button code is the button image. Everything else should remain the same to retain the sharing tracking.