Javascript API

SendX Javascript API enables you to add contacts, associate tags with them and update custom fields. This guide details various functions associated with our Javascript API.

Installing Javascript Snippet

To use SendX Javascript API you need to have SendX snippet installed on your website. Each SendX team account has a unique snippet that can be found under Settings > Site Code Snippet

SendX Javascript snippet gets loaded asynchronously and hence it won't affect page load time of your website.

Sending API Requests

All requests follow the same pattern.

_scq.push(["methodName", { key: "value", ... }]);

API requests are executed asynchronously so you can safely place them anywhere on the page. The conventions are similar to what google analytics API follows.

API Methods

SendX Javascript API has two methods:

Identify API Method

Identify API Method is used to attach data to a visitor. If a contact is not yet created then we will create the contact. In case contact already exists then we update it.

Example Request:

_scq.push(["identify", { email: "",
firstName: "John", lastName: "Doe", birthday: "1989-03-03", customFields: { "Designation": "Software Engineer", "Age": "27", "Experience": "5"},
tags: ["Developer", "API Team"],

Note that tags are an array of strings. In case they don't exist previously then API will create them and associate them with the contact.

Similarly if a custom field doesn't exist then it is first created and then associated with the contact along-with the corresponding value. In case custom field exists already then we simply update the value of it for the aforementioned contact.

We don't delete any of the properties based on identify call. What this means is that if for the same contact you did two API calls like:

API Call A

_scq.push(["identify", { email: "", firstName: "John", birthday: "1989-03-03", customFields: { "Designation": "Software Engineer"},
tags: ["Developer"],

API Call B

_scq.push(["identify", {
email: "",
customFields: { "Age": "29"},
tags: ["API Team"],

The the final contact will have firstName as John, birthday as 1989-03-03 present. Also both tags Developer and API Team shall be present alongwith custom fields Designation and Age.


  • firstName: type string
  • lastName: type string
  • email: type string
  • newEmail: type string
  • company: type string
  • birthday: type string with format YYYY-MM-DD eg: 2016-11-21
  • customFields: type map[string]string
  • tags: type array of string

In case email of an already existing contact needs to be updated then specify current email under email property and updated email under newEmail property.


{ "status": "200", "message": "OK", "data": { "encryptedTeamId": "CLdh9Ig5GLIN1u8gTRvoja", "encryptedId": "c9QF63nrBenCaAXe660byz", "tags": [ "API Team", "Tech" ], "firstName": "John", "lastName": "Doe", "email": "", "company": "", "birthday": "1989-03-03", "customFields": { "Age": "29", "Designation": "Software Engineer" } } }

Track API Method

Track API Method is used to track a contact. In the track API object you can:

  • addTags:
  • removeTags:

You can have automation rules based on tag addition as well as tag removal and they will get executed. For eg:

  • On user registration tag start onboarding drip for him / her.
  • Account Upgrade tag start add user to paid user list and start account expansion drip.
  • On removal of trial user tag start upsell trial completed users drip.

Example Request:

> _scq.push(["track", {
"addTags": ["blogger", "female"] }]);

> _scq.push(["track", {
"addTags": ["paid user"], "removeTags": ["trial user"] }]);


> { "status": "200", "message": "OK", "data": "success" }

Varun Jain

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