• In order to successfully use this endpoint the logged in user must be a Mimecast administrator with at least the Gateway | Tracking | Read permission.


To use this endpoint you send a POST request to:

  • /api/message-finder/search

Request Headers

The following request headers must be included in your request:

Field Description
Authorization Please see the Authorization guide for more information on building the Authorization header.

A randomly generated GUID, for example,

x-mc-app-id The Application ID provided with your Registered API Application.

The current date and time in the following format, for example,

Tue, 24 Nov 2015 12:50:11 UTC

Request Body

 "data": [
   "start": "Date String", 
   "end": "Date String", 
   "searchReason": "String", 
   "advancedTrackAndTraceOptions": {
    "senderIP": "String", 
    "to": "String", 
    "from": "String", 
    "subject": "String",
    "route": "String"
   "messageId": "String"
Field Type Required Description
searchReason String Optional Reason for Tracking a email, used for activity tracking puposes.
start Date String Optional The date and time of the earliest message to track, in the following format, 2011-12-03T10:15:30+0000
end Date String Optional The date and time of the latest message to track, in the following format, 2011-12-03T10:15:30+0000
messageId String Optional The internet message id of the message to track.
advancedTrackAndTraceOptions Object Optional An object describing the advanced filters to use in the tracking query.
route Array of Strings Optional An array of routes to filter by. Possible values are internal, outbound and inbound.
Advanced Track and trace Options Object
Field Type Required Description
from String Optional The sending email address or domain of the messages to track.
to String Optional The recipient email address or domain of the messages to track.
subject String Optional The subject of the messages to track.
senderIP String Optional The source IP address of messages to track.


 "fail": [], 
 "meta": {
  "status": 200
 "data": [
   "trackedEmails": [
     "status": "String", 
     "received": "String", 
     "fromEnv": {
      "displayableName": "String", 
      "emailAddress": "String"
     "fromHdr": {
      "displayableName": "String", 
      "emailAddress": "String"
     "attachments": true, 
     "to": [
       "displayableName": "String", 
       "emailAddress": "String"
     "senderIP": "String", 
     "route": "String", 
     "id": "String", 
     "sent": "String", 
     "subject": "String"
meta object
Field Type Description
status Number The function level status of the request.
Field Type Description
trackedEmails Array An array of tracked email objects
Tracked Emails Object

fromHdrSender ObjectAn object describing the envelope from address of the message.

Field Type Description
status String The status of the message.
received Date String The date and time the message was received by Mimecast.
attachments Boolean If the message has attachments.
route String The route of the message.
to Array An array of recipient objects.
fromEnv Sender Object An object describing the envelope from address of the message.
senderIP String The source IP address of the message.
id String The Mimecast ID of the message. Used to load more information about the message.
sent Date String The date and time that the message was sent / processed by Mimecast.
subject String The subject of the message.
Recipient Object
Field Type Description
emailAddress String The email address of the recipient.
displayableName String The display name of the recipient.
Sender Object
Field Type Description
emailAddress String The email address of the sender.
displayableName String The display name of the sender.

Sample Code

Sample code is provided to demonstrate how to use the API and is not representative of a production application. To use the sample code; complete the required variables as described, populate the desired values in the request body, and execute in your favorite IDE.  Please see the Global Base URL's page to find the correct base URL to use for your account.

POST {base_url}/api/message-finder/search
Authorization: MC {accesskKey}:{Base64 encoded signed Data To Sign}
x-mc-date: {dateTime}
x-mc-req-id: {unique id}
x-mc-app-id: {applicationId}
Content-Type: application/json
Accept: application/json

        "searchReason": "String",
        "start": "Date String",
        "end": "Date String",
        "messageId": "String",
        "route": "String"
        "advancedTrackAndTraceOptions": {
            "from": "String",
            "to": "String",
            "subject": "String",
            "senderIP": "String",
import base64
import hashlib
import hmac
import uuid
import datetime
import requests

# Setup required variables
base_url = ""
uri = "/api/message-finder/search"
url = base_url + uri
access_key = "YOUR ACCESS KEY"
secret_key = "YOUR SECRET KEY"

# Generate request header values
request_id = str(uuid.uuid4())
hdr_date = datetime.datetime.utcnow().strftime("%a, %d %b %Y %H:%M:%S") + " UTC"

# DataToSign is used in hmac_sha1
dataToSign = ':'.join([hdr_date, request_id, uri, app_key])

# Create the HMAC SHA1 of the Base64 decoded secret key for the Authorization header
hmac_sha1 =, dataToSign.encode(), digestmod=hashlib.sha1).digest()

# Use the HMAC SHA1 value to sign the hdrDate + ":" requestId + ":" + URI + ":" + appkey
sig = base64.b64encode(hmac_sha1).rstrip()

# Create request headers
headers = {
    'Authorization': 'MC ' + access_key + ':' + sig.decode(),
    'x-mc-app-id': app_id,
    'x-mc-date': hdr_date,
    'x-mc-req-id': request_id,
    'Content-Type': 'application/json'

payload = {
        'data': [
                'searchReason': 'String',
                'start': 'Date String',
                'end': 'Date String',
                'messageId': 'String',
                'route': 'String',
                'advancedTrackAndTraceOptions': {
                    'from': 'String',
                    'to': 'String',
                    'subject': 'String',
                    'senderIP': 'String'

r =, headers=headers, data=str(payload))

static void Main(string[] args)
            //Setup required variables
            string baseUrl = "";
            string uri = "/api/message-finder/search";
            string accessKey = "YOUR ACCESS KEY";
            string secretKey = "YOUR SECRET KEY";
            string appId = "YOUR APPLICATION ID";
            string appKey = "YOUR APPLICATION KEY";

            //Generate request header values
            string hdrDate = System.DateTime.Now.ToUniversalTime().ToString("R");
            string requestId = System.Guid.NewGuid().ToString();

            //Create the HMAC SHA1 of the Base64 decoded secret key for the Authorization header
            System.Security.Cryptography.HMAC h = new System.Security.Cryptography.HMACSHA1(System.Convert.FromBase64String(secretKey));

            //Use the HMAC SHA1 value to sign the hdrDate + ":" requestId + ":" + URI + ":" + appkey
            byte[] hash = h.ComputeHash(System.Text.Encoding.Default.GetBytes(hdrDate + ":" + requestId + ":" + uri + ":" + appKey));

            //Build the signature to be included in the Authorization header in your request
            string signature = "MC " + accessKey + ":" + System.Convert.ToBase64String(hash);

            //Build Request
            System.Net.HttpWebRequest request = (System.Net.HttpWebRequest)System.Net.WebRequest.Create(baseUrl + uri);
            request.Method = "POST";
            request.ContentType = "application/json";

            //Add Headers
            request.Headers[System.Net.HttpRequestHeader.Authorization] = signature;
            request.Headers.Add("x-mc-date", hdrDate);
            request.Headers.Add("x-mc-req-id", requestId);
            request.Headers.Add("x-mc-app-id", appId);

            //Add request body
            //Create and write data to stream
            string postData = @"{
                    ""data"": [
                            ""searchReason"": ""String"",
                            ""start"": ""Date String"",
                            ""end"": ""Date String"",
                            ""messageId"": ""String"",
                            ""route"": ""String"",
                            ""advancedTrackAndTraceOptions"": {
                                ""from"": ""String"",
                                ""to"": ""String"",
                                ""subject"": ""String"",
                                ""senderIP"": ""String""

            byte[] payload = System.Text.Encoding.UTF8.GetBytes(postData);

            System.IO.Stream stream = request.GetRequestStream();
            stream.Write(payload, 0, payload.Length);

            //Send Request
            System.Net.HttpWebResponse response = (System.Net.HttpWebResponse)request.GetResponse();

            //Output response to console
            System.IO.StreamReader reader = new System.IO.StreamReader(response.GetResponseStream());
            string responseBody = "";
            string temp = null;
            while ((temp = reader.ReadLine()) != null)
                responseBody += temp;
#Setup required variables
$baseUrl = ""
$uri = "/api/message-finder/search"
$url = $baseUrl + $uri
$accessKey = "YOUR ACCESS KEY"
$secretKey = "YOUR SECRET KEY"

#Generate request header values
$hdrDate = (Get-Date).ToUniversalTime().ToString("ddd, dd MMM yyyy HH:mm:ss UTC")
$requestId = [guid]::NewGuid().guid

#Create the HMAC SHA1 of the Base64 decoded secret key for the Authorization header
$sha = New-Object System.Security.Cryptography.HMACSHA1
$sha.key = [Convert]::FromBase64String($secretKey)
$sig = $sha.ComputeHash([Text.Encoding]::UTF8.GetBytes($hdrDate + ":" + $requestId + ":" + $uri + ":" + $appKey))
$sig = [Convert]::ToBase64String($sig)

#Create Headers
$headers = @{"Authorization" = "MC " + $accessKey + ":" + $sig;
                "x-mc-date" = $hdrDate;
                "x-mc-app-id" = $appId;
                "x-mc-req-id" = $requestId;
                "Content-Type" = "application/json"}

#Create post body
$postBody = "{
                    ""data"": [
                            ""searchReason"": ""String"",
                            ""start"": ""Date String"",
                            ""end"": ""Date String"",
                            ""messageId"": ""String"",
                            ""route"": ""String"",
                            ""advancedTrackAndTraceOptions"": {
                                ""from"": ""String"",
                                ""to"": ""String"",
                                ""subject"": ""String"",
                                ""senderIP"": ""String""

#Send Request
$response = Invoke-RestMethod -Method Post -Headers $headers -Body $postBody -Uri $url

#Print the response
public static void main(String[] args) throws,, {

        //set up variables for request
        String baseUrl = "";
        String uri = "/api/message-finder/search";
        String url = "https://" + baseUrl + uri;
        String accessKey = "YOUR ACCESS KEY";
        String secretKey = "YOUR SECRET KEY";
        String appId = "YOUR APPLICATION ID";
        String appKey = "YOUR APPLICATION KEY";

        //create URL object obj = new;

        // set guid for x-mc-req-id header
        String guid = java.util.UUID.randomUUID().toString();

        // set date for x-mc-date header
        java.text.SimpleDateFormat sdf = new java.text.SimpleDateFormat("EEE, d MMM yyyy HH:mm:ss z");
        String date = sdf.format(new java.util.Date());

        //create signature for the Authorization header
        String dataToSign = date + ":" + guid + ":" + uri + ":" + appKey;
        String hmacSHA1 = "HmacSHA1";
        javax.crypto.spec.SecretKeySpec signingKey = new javax.crypto.spec.SecretKeySpec(org.apache.commons.codec.binary.Base64.decodeBase64(secretKey.getBytes()), hmacSHA1);
        javax.crypto.Mac mac = javax.crypto.Mac.getInstance(hmacSHA1);
        String sig = new String(org.apache.commons.codec.binary.Base64.encodeBase64(mac.doFinal(dataToSign.getBytes())));

        // create request object con = ( obj.openConnection();

        //set request type to POST

        //add reuqest headers
        con.setRequestProperty("Authorization", "MC " + accessKey + ":" + sig);
        con.setRequestProperty("x-mc-req-id", guid);
        con.setRequestProperty("x-mc-app-id", appId);
        con.setRequestProperty("x-mc-date", date);
        con.setRequestProperty("Content-Type", "application/json");
        con.setRequestProperty("Accept", "application/json");

        //Add post body to the request
        String postBody = "{\n" +
        " \"data\": [\n" +
        "     {\n" +
        "         \"searchReason\": \"String\",\n" +
        "         \"start\": \"Date String\",\n" +
        "         \"end\": \"Date String\",\n" +
        "         \"messageId\": \"String\",\n" +
        "         \"route\": \"String\",\n" +
        "         \"advancedTrackAndTraceOptions\": {\n" +
        "              \"from\": \"String\",\n" +
        "              \"to\": \"String\",\n" +
        "              \"subject\": \"String\",\n" +
        "              \"senderIP\": \"String\"\n" +
        "              }\n" +
        "     }\n" +
        " ]\n" +
        "}"; os = con.getOutputStream();

        //process response in = new
        String inputLine;
        StringBuffer response = new StringBuffer();

        while ((inputLine = in.readLine()) != null) {

        //return result
Back to Top