When sending a campaign, you are able to use a number of custom tags and filters.<br />
Most common tags are listed below: <br /><br />
 
<div class="col-lg-12">
<table class="table table-bordered table-hover table-striped"><tbody><tr><td>Tag</td>
			<td>Required</td>
		</tr><tr><td>[UNSUBSCRIBE_URL]</td>
			<td>YES</td>
		</tr><tr><td>[COMPANY_FULL_ADDRESS]</td>
			<td>YES</td>
		</tr><tr><td>[UPDATE_PROFILE_URL]</td>
			<td>NO</td>
		</tr><tr><td>[WEB_VERSION_URL]</td>
			<td>NO</td>
		</tr><tr><td>[CAMPAIGN_URL]</td>
			<td>NO</td>
		</tr><tr><td>[LIST_NAME]</td>
			<td>NO</td>
		</tr><tr><td>[LIST_SUBJECT]</td>
			<td>NO</td>
		</tr><tr><td>[LIST_DESCRIPTION]</td>
			<td>NO</td>
		</tr><tr><td>[LIST_FROM_NAME]</td>
			<td>NO</td>
		</tr><tr><td>[CURRENT_YEAR]</td>
			<td>NO</td>
		</tr><tr><td>[CURRENT_MONTH]</td>
			<td>NO</td>
		</tr><tr><td>[CURRENT_DAY]</td>
			<td>NO</td>
		</tr><tr><td>[CURRENT_DATE]</td>
			<td>NO</td>
		</tr><tr><td>[COMPANY_NAME]</td>
			<td>NO</td>
		</tr><tr><td>[COMPANY_ADDRESS_1]</td>
			<td>NO</td>
		</tr><tr><td>[COMPANY_ADDRESS_2]</td>
			<td>NO</td>
		</tr><tr><td>[COMPANY_CITY]</td>
			<td>NO</td>
		</tr><tr><td>[COMPANY_ZONE]</td>
			<td>NO</td>
		</tr><tr><td>[COMPANY_ZIP]</td>
			<td>NO</td>
		</tr><tr><td>[COMPANY_COUNTRY]</td>
			<td>NO</td>
		</tr><tr><td>[COMPANY_PHONE]</td>
			<td>NO</td>
		</tr><tr><td>[CAMPAIGN_SUBJECT]</td>
			<td>NO</td>
		</tr><tr><td>[CAMPAIGN_TO_NAME]</td>
			<td>NO</td>
		</tr><tr><td>[CAMPAIGN_FROM_NAME]</td>
			<td>NO</td>
		</tr><tr><td>[CAMPAIGN_REPLY_TO]</td>
			<td>NO</td>
		</tr><tr><td>[CAMPAIGN_UID]</td>
			<td>NO</td>
		</tr><tr><td>[SUBSCRIBER_UID]</td>
			<td>NO</td>
		</tr><tr><td>[EMAIL]</td>
			<td>NO</td>
		</tr><tr><td>[FNAME]</td>
			<td>NO</td>
		</tr><tr><td>[LNAME]</td>
			<td>NO</td>
		</tr></tbody></table></div>

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Now, each of the above tags is able to receive a set of filters.<br />
Filters are a simple way of transforming the tag in a way or another, for example you might want to embed a sharing link to twitter in your campaign, say the campaign url itself.<br /><br />
Using only the tags you would embed it like:<br /><br /><code>https://twitter.com/intent/tweet?text=[CAMPAIGN_SUBJECT]&amp;url=[CAMPAIGN_URL] </code><br /><br />
But there is a problem, because twitter expects your arguments to be url encoded, and by that, i mean twitter expects to get<br /><br /><code>https://twitter.com/intent/tweet?text=my%20super%20campaign&amp;url=http%3A%2F%2Fwww.domain.com%2Fcampaigns%2F1cart129djat3</code><br /><br />
but instead it will get <code>https://twitter.com/intent/tweet?text=my super campaign&amp;url=http://www.domain.com/campaigns/1cart129djat3</code><br /><br />
In order to overcome this issue, we will apply filters over our tags, therefore, the twitter url becomes:<br /><br /><code>https://twitter.com/intent/tweet?text=[CAMPAIGN_SUBJECT:filter:urlencode]&amp;url=[CAMPAIGN_URL:filter:urlencode] </code><br /><br />
Pretty simple eh?<br />
But we can do even more, let's say we want to make sure our twitter text starts with a capitalized letter and the rest of the letters will be lowercase.<br />
In order to accomplish this, we can apply multiple filters(separate by a pipe) to same tag, for example: <br /><br /><code>https://twitter.com/intent/tweet?text=[CAMPAIGN_SUBJECT:filter:lowercase|ucfirst|urlencode]&amp;url=[CAMPAIGN_URL:filter:urlencode] </code><br />
Please note, the order in which you add the filters is the same order they are applied.<br /><br />
Bellow is the entire list of filters, for now there are a few, but in the future the number might increase.
<div class="clearfix"> </div>

<div class="col-lg-12">
<table class="table table-bordered table-hover table-striped"><tbody><tr><td>urlencode</td>
			<td>will urlencode your tag</td>
		</tr><tr><td>rawurlencode</td>
			<td>will rawurlencode your url</td>
		</tr><tr><td>htmlencode</td>
			<td>will convert html tags into their entities</td>
		</tr><tr><td>trim</td>
			<td>will trim the white spaces from begining and end of your tag</td>
		</tr><tr><td>uppercase</td>
			<td>will transform your tag in uppercase only chars</td>
		</tr><tr><td>lowercase</td>
			<td>will transform your tag in lowercase only chars</td>
		</tr><tr><td>ucwords</td>
			<td>will capitalize each first letter from your tag content</td>
		</tr><tr><td>ucfirst</td>
			<td>will capitalize only the first letter of your tag</td>
		</tr><tr><td>reverse</td>
			<td>will reverse your tag content</td>
		</tr></tbody></table></div>

<div class="clearfix"> </div>
