Integration

Email notifications integration is possible using SendGrid as a provider or a custom provider. Custom provider allows integration with providers other than SendGrid.

SendGrid

We have partnered with SendGrid for sending Email Notifications and hence you need to set up an account on SendGrid before you start using the extension.

Get your SendGrid API Key

Log in to your SendGrid account.
In the left navigation pane, go to Settings and select API Keys.
If you don't have an API Key yet, click on Create API Key.
Give a name to your API Key and select Full Access to get started.
Make a note of the API key for later use.

Create an email template

Log in to your SendGrid account.
In the left navigation pane, go to Email API and select Dynamic Templates.
Click on "Create a Dynamic Template" and give a name to your template.
In the Template listing, expand your template and click on "Add Version".
Under the "Your Email Designs" tab, select Blank Template.
As we have the following HTML template ready for you, select the "Code Editor" option.
Paste the code for the email template. You should be able to see the Preview in the Right pane.
Click on Settings on the Left to expand the Settings drawer.
Enter the Version name and the value for Subject as {{subject}} and hit "Save".
You have now successfully created a Template with a version.
From the Dynamic Templates listing page, expand your Template and make a note of the Template ID for later use.
The payload sent by the extension to SendGrid is as follows:

For one-on-one conversation
For group conversation

{
  "to": {
    "uid": "cometchat-uid-1",
    "email": "andrew-joseph@example.com",
    "name": "Andrew Joseph",
    "avatar": "https://assets.cometchat.io/sampleapp/v2/users/cometchat-uid-1.webp"
  },
  "messages": [
    {
      "sender": {
        "uid": "cometchat-uid-4",
        "avatar": "https://assets.cometchat.io/sampleapp/v2/users/cometchat-uid-4.webp",
        "name": "Susan Marie"
      },
      "message": "Are we meeting on this weekend?"
    },
    {
      "sender": {
        "uid": "cometchat-uid-4",
        "avatar": "https://assets.cometchat.io/sampleapp/v2/users/cometchat-uid-4.webp",
        "name": "Susan Marie"
      },
      "message": "📷 Has shared an image"
    }
  ],
  "senderDetails": {
    "uid": "cometchat-uid-4",
    "name": "Susan Marie",
    "avatar": "https://assets.cometchat.io/sampleapp/v2/users/cometchat-uid-4.webp""
  }
}

{
  "to": {
    "uid": "cometchat-uid-1",
    "email": "andrew-joseph@example.com",
    "name": "Andrew Joseph",
    "avatar": "https://assets.cometchat.io/sampleapp/v2/users/cometchat-uid-1.webp"
  },
  "messages": [
    {
      "sender": {
        "uid": "cometchat-uid-5",
        "avatar": "https://assets.cometchat.io/sampleapp/v2/users/cometchat-uid-5.webp",
        "name": "John Paul"
      },
      "message": "Hello all! What's up?"
    },
    {
      "sender": {
        "uid": "cometchat-uid-4",
        "avatar": "https://assets.cometchat.io/sampleapp/v2/users/cometchat-uid-4.webp",
        "name": "Susan Marie"
      },
      "message": "This is the place I was thinking about"
    }
  ],
  "groupDetails": {
    "guid": "cometchat-guid-1",
    "name": "Hiking Group",
    "icon": "https://assets.cometchat.io/sampleapp/v2/groups/cometchat-guid-1.webp"
  }
}

The email template recommended by us is as follows. Replace "https://www.YOURSITE.com" with your website's URL in the below template.

<!doctype html>
<html>

<head>
  <meta name="viewport" content="width=device-width">
  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  <title>Simple Transactional Email</title>
  <style>
    /* ------------------------------------- INLINED WITH htmlemail.io/inline ------------------------------------- */
    /* ------------------------------------- RESPONSIVE AND MOBILE FRIENDLY STYLES ------------------------------------- */
    @media only screen and (max-width: 620px) {
      table[class=body] h1 {
        font-size: 28px !important;
        margin-bottom: 10px !important;
      }

      table[class=body] p,
      table[class=body] ul,
      table[class=body] ol,
      table[class=body] td,
      table[class=body] span,
      table[class=body] a {
        font-size: 16px !important;
      }

      table[class=body] .wrapper,
      table[class=body] .article {
        padding: 10px !important;
      }

      table[class=body] .content {
        padding: 0 !important;
      }

      table[class=body] .container {
        padding: 0 !important;
        width: 100% !important;
      }

      table[class=body] .main {
        border-left-width: 0 !important;
        border-radius: 0 !important;
        border-right-width: 0 !important;
      }

      table[class=body] .btn table {
        width: 100% !important;
      }

      table[class=body] .btn a {
        width: 100% !important;
      }

      table[class=body] .img-responsive {
        height: auto !important;
        max-width: 100% !important;
        width: auto !important;
      }
    }

    /* ------------------------------------- PRESERVE THESE STYLES IN THE HEAD ------------------------------------- */
    @media all {
      .ExternalClass {
        width: 100%;
      }

      .ExternalClass,
      .ExternalClass p,
      .ExternalClass span,
      .ExternalClass font,
      .ExternalClass td,
      .ExternalClass div {
        line-height: 100%;
      }

      .apple-link a {
        color: inherit !important;
        font-family: inherit !important;
        font-size: inherit !important;
        font-weight: inherit !important;
        line-height: inherit !important;
        text-decoration: none !important;
      }

      #MessageViewBody a {
        color: inherit;
        text-decoration: none;
        font-size: inherit;
        font-family: inherit;
        font-weight: inherit;
        line-height: inherit;
      }

      .btn-primary table td:hover {
        background-color: #34495e !important;
      }

      .btn-primary a:hover {
        background-color: #34495e !important;
        border-color: #34495e !important;
      }

      .senderName {
        font-weight: bold;
        font-size: 0.8em;
        text-transform: uppercase;
        color: #666;
      }
    }
  </style>
</head>

<body class=""
  style="background-color: #f6f6f6; font-family: sans-serif; -webkit-font-smoothing: antialiased; font-size: 14px; line-height: 1.4; margin: 0; padding: 0; -ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%;">
  <table border="0" cellpadding="0" cellspacing="0" class="body"
    style="border-collapse: separate; mso-table-lspace: 0pt; mso-table-rspace: 0pt; width: 100%; background-color: #f6f6f6;">
    <tr>
      <td style="font-family: sans-serif; font-size: 14px; vertical-align: top;">&nbsp;</td>
      <td class="container"
        style="font-family: sans-serif; font-size: 14px; vertical-align: top; display: block; Margin: 0 auto; max-width: 580px; padding: 10px; width: 580px;">
        <div class="content"
          style="box-sizing: border-box; display: block; Margin: 0 auto; max-width: 580px; padding: 10px;">

          <!-- START CENTERED WHITE CONTAINER -->
          <span class="preheader"
            style="color: transparent; display: none; height: 0; max-height: 0; max-width: 0; opacity: 0; overflow: hidden; mso-hide: all; visibility: hidden; width: 0;">This
            is preheader text. Some clients will show this text as a preview.</span>
          <table class="main"
            style="border-collapse: separate; mso-table-lspace: 0pt; mso-table-rspace: 0pt; width: 100%; background: #ffffff; border-radius: 3px;">

            <!-- START MAIN CONTENT AREA -->
            <tr>
              <td class="wrapper"
                style="font-family: sans-serif; font-size: 14px; vertical-align: top; box-sizing: border-box; padding: 20px;">
                <table border="0" cellpadding="0" cellspacing="0"
                  style="border-collapse: separate; mso-table-lspace: 0pt; mso-table-rspace: 0pt; width: 100%;">
                  <tr>
                    <td style="font-family: sans-serif; font-size: 14px; vertical-align: top;">
                      <p
                        style="font-family: sans-serif; font-size: 25px; font-weight: bold; margin: 0; Margin-bottom: 30px;">
                        While you were away...</p>

                      <p>Hello, {{to.name}}! You have {{messages.length}} new messages{{#if groupDetails}} in {{groupDetails.name}}{{/if}}.</p>
                      <table border="0" cellpadding="0" cellspacing="0" class="btn btn-primary"
                        style="border-collapse: separate; mso-table-lspace: 0pt; mso-table-rspace: 0pt; width: 100%; box-sizing: border-box;">
                        <tbody>


                          {{#each messages}}
                          {{#if this.message}}
                          <tr>
                            <td align="left"
                              style="font-family: sans-serif; font-size: 14px; vertical-align: top; padding-bottom: 0px;padding-right: 10px;"
                              width="50">
                              <img src="{{this.sender.avatar}}" style="border-radius:100px;border:1px solid #eee;"
                                height="50" width="50">
                              <br><br>
                            </td>
                            <td align="left"
                              style="font-family: sans-serif; font-size: 14px; vertical-align: top; padding-top: 7px;padding-bottom:0px;">
                              <span class="senderName">{{this.sender.name}}</span>
                              <br />{{this.message}}
                            </td>
                          </tr>
                          {{/if}}
                          {{/each}}


                        </tbody>
                      </table>


                      <table border="0" cellpadding="0" cellspacing="0" class="btn btn-primary"
                        style="border-collapse: separate; mso-table-lspace: 0pt; mso-table-rspace: 0pt; width: 100%; box-sizing: border-box; margin-top:15px">
                        <tbody>
                          <tr>
                            <td align="left"
                              style="font-family: sans-serif; font-size: 14px; vertical-align: top; padding-bottom: 15px;">
                              <table border="0" cellpadding="0" cellspacing="0"
                                style="border-collapse: separate; mso-table-lspace: 0pt; mso-table-rspace: 0pt; width: auto;">
                                <tbody>
                                  <tr>
                                    <td
                                      style="font-family: sans-serif; font-size: 14px; vertical-align: top; background-color: #3498db; border-radius: 5px; text-align: center;">
                                      <a href="https://www.YOURSITE.com" target="_blank"
                                        style="display: inline-block; color: #ffffff; background-color: #3498db; border: solid 1px #3498db; border-radius: 5px; box-sizing: border-box; cursor: pointer; text-decoration: none; font-size: 14px; font-weight: bold; margin: 0; padding: 12px 25px; text-transform: capitalize; border-color: #3498db;">Visit</a>
                                    </td>
                                  </tr>
                                </tbody>
                              </table>
                            </td>
                          </tr>
                        </tbody>
                      </table>
                      <p
                        style="font-family: sans-serif; font-size: 14px; font-weight: normal; margin: 0; Margin-bottom: 15px;margin-top:20px;color:#666;">
                        To unsubscribe to these notifications, <a href="<%asm_group_unsubscribe_raw_url%>"
                          style="color:#666">click here</a>.</p>
                    </td>
                  </tr>
                </table>
              </td>
            </tr>

            <!-- END MAIN CONTENT AREA -->
          </table>

          <!-- START FOOTER -->
          <div class="footer" style="clear: both; Margin-top: 10px; text-align: center; width: 100%;">
            <table border="0" cellpadding="0" cellspacing="0"
              style="border-collapse: separate; mso-table-lspace: 0pt; mso-table-rspace: 0pt; width: 100%;">

              <tr>
                <td class="content-block powered-by"
                  style="font-family: sans-serif; vertical-align: top; padding-bottom: 10px; padding-top: 10px; font-size: 12px; color: #999999; text-align: center;">
                  Powered by <a href="https://www.cometchat.com"
                    style="color: #999999; font-size: 12px; text-align: center; text-decoration: none;">CometChat</a>
                </td>
              </tr>
            </table>
          </div>
          <!-- END FOOTER -->

          <!-- END CENTERED WHITE CONTAINER -->
        </div>
      </td>
      <td style="font-family: sans-serif; font-size: 14px; vertical-align: top;">&nbsp;</td>
    </tr>
  </table>
</body>

</html>

Add an unsubscribe group

An unsubscribe group will allow your users to unsubscribe to only chat email notifications and will allow you to continue to send other emails to that user via SendGrid.

In the left pane, go to Suppressions and select Unsubscribe Groups.
Click on "Create New Group" and give it a name and proper description.
Save your new group and make a note of the Unsubscribe Group ID for later use.

Store contact details

Store the Email IDs of your users by using our Update Contact details API.

Enable Email notifications

Login to CometChat dashboard and select your app.
Navigate to Notifications > Notifications in the left-hand menu.
Enable Email notifications feature.

Save the SendGrid credentials

Save the following details:

SendGrid API key
SendGrid Template ID
SendGrid Unsubscribe Group ID
Sender's name
Sender's email

info

The domain used in Sender's Email needs to be Authenticated. Refer to SendGrid's documentation on Domain Authentication for more details. Use the complete authenticated domain in the sender's email address. For eg, if your domain is example.com and the authenticated domain is em1235.example.com, then the sender's email address should be sender@em1235.example.com and not sender@example.com

Save user's timezone

A user's timezone is required to allow them to set a schedule for receiving notifications. In case the timezone is not registered, the default timezone for

For US region: EST
For EU region: GMT
For IN region: Asia/Kolkata

The timezone can be registered for a user from the SDK using the updateTimezone() method of CometChatNotifications class.

info

This functionality is available in the following SDK versions:

Android SDK version 4.0.9 and above
iOS SDK version 4.0.51 and above
Web SDK version 4.0.8 and above
React Native SDK version 4.0.10 and above
Ionic Cordova SDK version 4.0.8 and above
Flutter SDK version 4.0.15 and above

Receive notifications

Send a message to any user and keep the conversation unread for the designated amount of time to receive an email notification.

Configure email replies

In the SendGrid provider settings, enable the email replies. Optionally, you can set a different sender's email address. Only ensure that the it doesn't contain any "+" symbol in it.

Copy the Replies webhook URL as that will be required for Inbound parse configuration on SendGrid's end. Follow the SendGrid's Inbound parse webhook steps.

Before saving the Inbound Host and URL:

Uncheck Spam Check checkbox.
Uncheck Send Raw checkbox.

Once this setup is successful, users will be able to reply to an email notification and send messages in a particular conversation on CometChat. The parsing of the replies is heavily dependent on the Email client used and the content of the reply.

Custom Email provider

Custom provider allows you to make use of providers apart from SendGrid for triggering Email notifications. This is implemented using webhook URL which gets all the required details that can be used to trigger Email notifications.

Pre-requisite

Your webhook endpoint must be accessible over HTTPS. This is essential to ensure the security and integrity of data transmission.
This URL should be publicly accessible from the internet.
Ensure that your endpoint supports the HTTP POST method. Event payloads will be delivered via HTTP POST requests in JSON format.
Configure your endpoint to respond immediately to the CometChat server with a 200 OK response. The response should be sent within 2 seconds of receiving the request.
For security, it is recommended to set up Basic Authentication that is usually used for server-to-server calls. This requires you to configure a username and password. Whenever your webhook URL is triggered, the HTTP Header will contain:

Authorization: Basic <Base64-encoded-credentials>

Add credentials

Click on the "+ Add Credentials" button.
Enable the provider.
Enter the publically accessible Webhook URL.
It is recommended to enable Basic Authentication.
Enter the username and password.
Enabling the "Trigger only if email address is stored with CometChat" setting requires users' email addresses to be stored with CometChat using the Update Contact details API. When enabled, the webhook is triggered only for those users. If this setting is disabled, the webhook triggers regardless of whether users' email addresses are stored with CometChat.
Save the credentials.

How does it work?

The Custom provider is triggered once for an event in one-on-one conversation. In case of notifying the members of a group, the custom provider is triggered once for each user present in that group.

For example, if there are 100 members in the group, your webhook will receive 100 HTTP requests. Once for each member of the group.

One-on-one conversation
Group conversation

{
  "trigger": "email-notification-payload-generated",
  "data": {
    "to": {
      "uid": "cometchat-uid-1",
      "email": "andrew-joseph@example.com", // Optional
      "name": "Andrew Joseph"
    },
    "messages": [
      {
        "sender": {
          "uid": "cometchat-uid-4",
          "avatar": "https://assets.cometchat.io/sampleapp/v2/users/cometchat-uid-4.webp",
          "name": "Susan Marie"
        },
        "message": "Are we meeting on this weekend?"
      },
      {
        "sender": {
          "uid": "cometchat-uid-4",
          "avatar": "https://assets.cometchat.io/sampleapp/v2/users/cometchat-uid-4.webp",
          "name": "Susan Marie"
        },
        "message": "📷 Has shared an image"
      }
    ],
    "senderDetails": {
      "uid": "cometchat-uid-4",
      "name": "Susan Marie",
      "avatar": "https://assets.cometchat.io/sampleapp/v2/users/cometchat-uid-4.webp"
    },
    "subject": "New messages from Susan Marie"
  },
  "appId": "app123",
  "region": "us/eu/in",
  "webhook": "custom"
}

{
  "trigger": "email-notification-payload-generated",
  "data": {
    "to": {
      "uid": "cometchat-uid-1",
      "email": "andrew-joseph@example.com", // Optional
      "name": "Andrew Joseph"
    },
    "messages": [
      {
        "sender": {
          "uid": "cometchat-uid-5",
          "avatar": "https://assets.cometchat.io/sampleapp/v2/users/cometchat-uid-5.webp",
          "name": "John Paul"
        },
        "message": "Hello all! What's up?"
      },
      {
        "sender": {
          "uid": "cometchat-uid-4",
          "avatar": "https://assets.cometchat.io/sampleapp/v2/users/cometchat-uid-4.webp",
          "name": "Susan Marie"
        },
        "message": "This is the place I was thinking about"
      }
    ],
    "groupDetails": {
      "guid": "cometchat-guid-1",
      "name": "Hiking Group",
      "icon": "https://assets.cometchat.io/sampleapp/v2/groups/cometchat-guid-1.webp"
    },
    "subject": "New messages in Hiking Group"
},
  "appId": "app123",
  "region": "us/eu/in",
  "webhook": "custom"
}

Sample server-side code

const express = require('express');
const app = express();
const PORT = process.env.PORT || 3000;

app.use(express.json());

// Optional: Basic authentication middleware
const basicAuth = (req, res, next) => {
  const authHeader = req.headers['authorization'];
  if (!authHeader || !authHeader.startsWith('Basic ')) {
    return res.status(401).json({ message: 'Unauthorized' });
  }
  next();
};

const triggerEmailNotification = async (to, data) => {
  let { name, uid, email } = to;
  let { groupDetails, senderDetails, subject } = data;

  if (groupDetails) {
    console.log('Received webhook for group email notification');
  }

  if (senderDetails) {
    console.log('Received webhook for one-on-one email notification');
  }

  if (email == null) {
    // Your implementation to fetch Email ID
    email = await fetchEmailIDFor(uid);
  }

  // Your implementation for sending the email notification
  await sendEmail(email, subject, data.messages);
};

app.post('/webhook', basicAuth, (req, res) => {
  const { trigger, data, appId, region, webhook } = req.body;

  if (
    trigger !== 'email-notification-payload-generated' ||
    webhook !== 'custom'
  ) {
    return res.status(400).json({ message: 'Invalid trigger or webhook type' });
  }

  console.log('Received Webhook:', JSON.stringify(req.body, null, 2));

  triggerEmailNotification(to, data)
    .then((result) => {
      console.log(
        'Successfully triggered email notification for',
        appId,
        to.uid,
        result
      );
    })
    .catch((error) => {
      console.error(
        'Something went wrong while triggering email notification for',
        appId,
        to.uid,
        error.message
      );
    });

  res.status(200).json({ message: 'Webhook received successfully' });
});

app.listen(PORT, () => {
  console.log(`Server is running on port ${PORT}`);
});

Next steps

Have a look at the available preferences and templates for email notifications.

Chat & Calling

Extend

UI Kits

SDKs

Widgets

APIs

SendGrid​

Get your SendGrid API Key​

Create an email template​

Add an unsubscribe group​

Store contact details​

Enable Email notifications​

Save the SendGrid credentials​

Save user's timezone​

Receive notifications​

Configure email replies​

Custom Email provider​

Pre-requisite​

Add credentials​

How does it work?​

Sample server-side code​

Next steps​