All Zephyr functions are listed below. You can sort by function name or category. For more information, see the Overview or Examples Library.

Category	Function	Description
AdTargeter	ad	Returns HTML of an AdTargeter section
AdTargeter	adinfo	Returns meta data of an AdTargeter section
API	api_event	Trigger the event API in a Transactional-only send
API	api_send	Triggers the send API in a Transactional-only send
API	api_user	Triggers the user API in a Transactional-only send
API	append_user_var	Adds values to an array on a user’s profile from an email send
Array Manipulation	list	Converts any data type to a list
Array Manipulation	map	Applies a lambda function to transform elements of a list
Array Manipulation	push	Pushes a new item to the end of an existing array
Array Manipulation	range	Creates an array containing a range of elements
Array Manipulation	set	Creates an array within a local template variable
Array Manipulation	shuffle	Randomizes the placement of objects in an array
Array Manipulation	slice	Returns a portion of a list based on a predefined start and end point
Array Manipulation	sort	Sorts a list based on desired criteria
Array/String/Object Manipulation	contains	Returns items that contain a certain elements
Array/String/Object Manipulation	first	Returns the first item from an element
Date	date	Returns a formatted date
Date	time	Returns a timestamp
Encryption	base64_decode	Decodes a Base64 string
Encryption	base64_encode	Encodes a string in Base64
Encryption	md5	Encodes a string in MD5
Encryption	sha1	Produces a hash of a value using SHA1
Encryption	sha256	Produces a hash of a value using SHA256
Filtering	bucket_list	Moves list elements into separate ‘buckets’ based on criteria
Filtering	content_intersect	Returns the overlap of items from two JSON arrays
Filtering	dedupe	Remove duplicate items from an array of content recommendations
Filtering	filter_content	Applies a lambda function to filter out elements of a list except if it’s pinned in Recommendation Manager
Filtering	filter	Applies a lambda function to filter out elements of a list, regardless of pinning in Recommendation Manager
Filtering	intersect	Returns the overlap between two lists
Geographical	distance	Calculates the distance between two latitude/longitude points
Geographical	user_geo_home	Determines the most frequent location of your user based on Sailthru’s geolocation data
Geographical	user_geo_select_region	Given a list of regions, selects the one in which the user has visited the most baed on Sailthru’s geolocation data
HTML Manipulation	h	Returns an HTML-escaped version of a string
HTML Manipulation	strip_tags	Strips tags from an HTML string in a data feed
HTML Manipulation	text	Converts contents to text-version email format
HTML Manipulation	u	Returns a URL-encoded version of a string
Number	exp	Takes the value of a number to the power of a second number
Number	round	Rounds a decimal to the nearest whole number
Number	sqrt	Takes the square root of a number
Numerical	abs	Returns the absolute value of a number
Numerical	int	Converts a string to an integer
Numerical	length	Returns the length of an array or string
Numerical	number	Formats the display of a number
Numerical	random	Returns a randomized number
Objects	keys	Returns the key names of an object
Objects	values	Returns the values of an object
Other	compare	Makes a comparison between two integers or strings to see which is larger
Other	message_id	Populates the message ID of a transactional or campaign message
Other	signup_confirm	Returns a URL in an email for users to add themselves to a list
Other	type	Returns the data type of an element, such as string or boolean
Other	user_engagement	Returns the current user’s Sailthru-defined engagement level
Personalization	horizon_count	Outputs the number of pageviews a user has had for a certain Sailthru interest tag
Personalization	horizon_interest	Returns the user’s interest level in a particular tag
Personalization	horizon_select	Returns items from an array based on user interest
Personalization	horizon_set_interest	Manually sets interest level for a particular tag on a single send
Personalization	personalize	Returns an array of the best-matching content or products for the user based on a chosen algorithm
Sharing	public_share	Returns a shareable URL for a non-personalized version of a newsletter
Sharing	social_share	Returns a shareable URL for a particular article or item in an email
String Manipulation	join	Returns a string concatenated by a provided delimiter
String Manipulation	lower	Force lowercases every element in a string
String Manipulation	replace	Peforms and search-and-replace for certain elements in an array
String Manipulation	split	Given a string, returns a list separated by a provided delimiter
String Manipulation	strpos	Finds the numeric position of the first instance of a character or string within another string
String Manipulation	strrpos	Finds the numeric position of the last instance of a character or string within another string
String Manipulation	substr	Given a string, returns a substring
String Manipulation	title	Capitalizes the first letter in each element of a string
String Manipulation	upper	Force uppercases every element in a string
Suppression	assert	Sends an email to a user if criteria evaluates to true
Suppression	cancel	Cancels an email for a user if criteria evaluates to true