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Chat SDKs JavaScript v4
Chat SDKs JavaScript
Chat SDKs
Version 4

Retrieve number of members who haven't received a message

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You can retrieve the number of members who haven’t received a specific message in a group channel. When the value of zero is returned, it means that the message has been successfully delivered to all members in the channel.

const createChannelParams = {
    invitedUserIds: [USER_2, USER_3],

const channel = await sb.groupChannel.createChannel(createParams);
    message: 'Hi Sendbirdians!',
    .onSucceeded((message) => {
    const numberOfUndeliveredMembers = channel.getUndeliveredMemberCount(message);
    // The number of members who haven’t received the message.
    // ...
    .onFailed((err, message) => {
    // Handle error.