---
schema_version: "1"
id: a791fa23b1967a8d4d771192ce707d8142c8cf000489db80e7ccc54611c57329
title: Messaging Limits and Considerations
collection: admin
version: current
locale: en-us
portal_url: https://docs.salesforce.com/admin/current/en-us/service/264-0-0/livemessage_limitations.md
canonical_url: https://help.salesforce.com/s/articleView?id=service.livemessage_limitations.htm&release=264.0.0&type=5
source_site: help.salesforce.com
content_type: documentation
content_hash: 8c51545cc03b578e535769a4cc728345ac2e9f0f9b6809a79ef2295dda531944
description: Before you get started with Messaging, review key limits and considerations.
products:
  - Service Cloud
  - Digital Engagement
release: "264"
---
# Messaging Limits and Considerations

Before you get started with Messaging, review key limits and considerations.

### Required Editions

<table class="slds-table slds-table_bordered slds-max-medium-table_stacked slds-m-bottom_small edition">
      <colgroup>
        <col style="width:50%">
        <col style="width:50%">
      </colgroup>
      <tbody>
        <tr class="">
          <td class="slds-cell-wrap" colspan="2" style="vertical-align:top;"><a href="https://help.salesforce.com/s/articleView?id=service.messaging_editions.htm&amp;type=5&amp;language=en_US" target="_blank">View supported editions.</a></td>

        </tr>
        <tr class="">
          <td class="slds-cell-wrap" style="vertical-align:top;">
            <a name="livemessage_limitations__d548e297"><!-- --></a><span style="vertical-align:text-bottom;display:inline-block;"><img style="margin-bottom:0;" id="livemessage_limitations__d548e297" src="https://sf-zdocs-cdn-prod.zoominsoftware.com/tdta-service-support_channels-264-0-0-production-enus/f3c4b3d2-ff86-4f7c-9fe2-3d8b23d35109/resources-global/_corporate/images/checkmark.png" alt="Checkmark"></span>
            <strong>This article applies to:</strong>
          </td>

          <td class="slds-cell-wrap" style="vertical-align:top;">Enhanced In-App Chat, Enhanced Web Chat v1, Enhanced Web Chat v2, Enhanced
            WhatsApp, Enhanced Facebook Messenger, Standard and Enhanced SMS, Enhanced Apple
            Messages for Business, Enhanced LINE, and Bring Your Own Channel</td>

        </tr>
      </tbody>
    </table>

## General Limits

<table class="slds-table slds-table_bordered slds-max-medium-table_stacked slds-m-bottom_small ">
        <colgroup>
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          <col style="width:50%">
        </colgroup>
        <thead class="slds-text-title_caps ">
          <tr class="">
            <th scope="col" class="slds-cell-wrap" style="vertical-align:top;" id="d115501e83">Limit</th>
            <th scope="col" class="slds-cell-wrap" style="vertical-align:top;" id="d115501e86">Value</th>
          </tr>
        </thead>
        <tbody>
          <tr class="">
            <td data-label="Limit" class="slds-cell-wrap" style="vertical-align:top;" headers="d115501e83 ">Maximum number of Messaging channels*</td>

            <td data-label="Value" class="slds-cell-wrap" style="vertical-align:top;" headers="d115501e86 ">2,000</td>

          </tr>
          <tr class="">
            <td data-label="Limit" class="slds-cell-wrap" style="vertical-align:top;" headers="d115501e83 ">Maximum simultaneous active messaging sessions*</td>

            <td data-label="Value" class="slds-cell-wrap" style="vertical-align:top;" headers="d115501e86 ">
              <ul>
                <li>Standard Messaging: No limit</li>

                <li>Enhanced Messaging and Enhanced Chat:
                  11,000</li>

                <li>If fewer than 11,000 inbound messaging sessions are active,
                  up to 4,000 of the unused sessions can be outbound or
                  automated outbound sessions. If 11,000 inbound sessions are
                  active, outbound and automated outbound sessions can't occur
                  until space is freed.</li>

                <li>An outbound session is converted to an active session and
                  counted against the active session limit only if the end
                  user responds within 5 minutes.</li>

                <li>If a user doesn’t respond to an outbound message within 5
                  minutes, the session isn’t counted against the active
                  session limit. </li>

                <li>An outbound session always counts against the active session
                  limit and the outbound session limit. When an outbound
                  session is converted to an active session, it no longer
                  counts against the outbound session limit.</li>

                <li>After 30 minutes without activity, an active session stops counting against
                  the active session limit, but the session status doesn't change. If a message is
                  sent in the session after 30 minutes of inactivity, the session once again
                  counts against the active session limit.</li>

              </ul>
              <p style="margin-bottom:0;">If you send a message after reaching your limit, the channel
                retries a few times.</p>
            </td>

          </tr>
          <tr class="">
            <td data-label="Limit" class="slds-cell-wrap" style="vertical-align:top;" headers="d115501e83 ">Maximum messages or messaging sessions per second*</td>

            <td data-label="Value" class="slds-cell-wrap" style="vertical-align:top;" headers="d115501e86 ">
              <ul>
                <li>Standard Messaging for Salesforce Classic: 2 messages per
                  second</li>

                <li>Standard Messaging for Lightning Experience: 12 new
                  messaging sessions per second, and up to 150 messages per
                  second thereafter</li>

                <li>Enhanced Messaging and Enhanced Chat: 50 new
                  messaging sessions per second, and up to 1,000 messages per
                  second thereafter</li>

              </ul>
              <p style="margin-bottom:0;">If limits are reached and a message can’t be sent,
                Salesforce retries sending it for 24 hours. The delay typically
                doesn’t exceed 10 minutes.</p>
            </td>

          </tr>
          <tr class="">
            <td data-label="Limit" class="slds-cell-wrap" style="vertical-align:top;" headers="d115501e83 ">Maximum length of outbound messages</td>

            <td data-label="Value" class="slds-cell-wrap" style="vertical-align:top;" headers="d115501e86 ">
              <ul>
                <li>SMS short codes: 160 characters</li>

                <li>SMS long codes and toll-free long codes: 912 characters, or
                  396 characters if the message includes special
                  characters</li>

                <li>WhatsApp: 4,096 characters</li>

                <li>Facebook Messenger: 2,000 characters</li>

                <li>Apple Messages for Business: 50,000 characters</li>

                <li>LINE: 5,000 characters</li>

                <li>Bring Your Own Channel for Messaging and Bring Your Own Channel for CCaaS: We
                  recommend that partners configure a custom field with a Data Type of Long Text
                  Area in your custom platform event, which allows 32,768 characters. </li>

              </ul>
            </td>

          </tr>
          <tr class="">
            <td data-label="Limit" class="slds-cell-wrap" style="vertical-align:top;" headers="d115501e83 ">Enhanced messaging session expiration</td>

            <td data-label="Value" class="slds-cell-wrap" style="vertical-align:top;" headers="d115501e86 ">A service rep's enhanced messaging session expires 10 seconds after they close
              the Service Console, or refresh the page and don’t select a login option. In
              standard Omni-Channel, the session expires 30 seconds after the last poll.</td>

          </tr>
          <tr class="">
            <td data-label="Limit" class="slds-cell-wrap" style="vertical-align:top;" headers="d115501e83 ">Maximum number of service reps who can join conferencing</td>

            <td data-label="Value" class="slds-cell-wrap" style="vertical-align:top;" headers="d115501e86 ">
              <ul>
                <li>Enhanced Chat: 5</li>

                <li>Enhanced Messaging Channels: 2</li>

              </ul>
            </td>

          </tr>
        </tbody>
      </table>

\* These limits apply collectively to all of your channels in your org. For example, Messaging allows up to 50 new messaging sessions per second in your enhanced Messaging channels and Enhanced Chat channels combined.

![Note](https://sf-zdocs-cdn-prod.zoominsoftware.com/tdta-service-support_channels-264-0-0-production-enus/f3c4b3d2-ff86-4f7c-9fe2-3d8b23d35109/images/icon_note.png)

Note Messaging session timestamps appear in the viewer’s device time zone. You can’t change this setting.

## Channel-Specific Considerations

Review limits and considerations for specific Messaging channels and features.

- [Considerations for Enhanced Chat](https://help.salesforce.com/s/articleView?id=service.miaw_considerations_and_limitations.htm&type=5&language=en_US)
- [Considerations for WhatsApp Channels](https://help.salesforce.com/s/articleView?id=service.messaging_whatsapp_considerations.htm&release=264.0.0&type=5 "WhatsApp Business lets businesses communicate with users of the WhatsApp messaging app. Review important considerations before creating a WhatsApp channel in Agentforce Service (formerly Service Cloud).")
- [Considerations for Facebook Messenger](https://help.salesforce.com/s/articleView?id=service.messaging_facebook_considerations.htm&release=264.0.0&type=5 "Review these considerations before creating a Facebook Messenger channel in Agentforce Service (formerly Service Cloud).")
- [Considerations for Apple Messages for Business](https://help.salesforce.com/s/articleView?id=service.messaging_apple_considerations.htm&release=264.0.0&type=5 "With an Apple Messages for Business channel, you can help customers using Apple’s native Messages app. Review important considerations before creating an Apple Messages for Business channel in Agentforce Service (formerly Service Cloud).")
- [Considerations for LINE Messaging Channels](https://help.salesforce.com/s/articleView?id=service.messaging_line_considerations.htm&release=264.0.0&type=5 "LINE lets businesses communicate with users of the LINE messaging app. Review important considerations for creating and managing LINE channels in Agentforce Service (formerly Service Cloud).")
- [Considerations for Long Code Channels](https://help.salesforce.com/s/articleView?id=service.messaging_text_message_considerations.htm&release=264.0.0&type=5 "Use text messaging to help service reps connect with customers even when they’re on the go. Review these considerations before setting up an SMS channel for a ten-digit long code or toll-free long code number.")
- [Considerations for Short Codes](https://help.salesforce.com/s/articleView?id=service.messaging_short_code_considerations.htm&release=264.0.0&type=5 "When you use short codes, your business is required to follow carrier compliance requirements, industry standards, and applicable laws. Short codes are only supported in the US and Canada. ")
- [Considerations for Broadcast SMS Messaging](https://help.salesforce.com/s/articleView?id=service.messaging_broadcast_considerations.htm&release=264.0.0&type=5 "Review considerations and tips regarding Broadcast Messaging for standard SMS channels.")
- [Considerations for Messaging Components](https://help.salesforce.com/s/articleView?id=service.messaging_components_considerations.htm&release=264.0.0&type=5 "Before creating messaging components for service reps to send in messaging sessions, review important considerations.")
- [Considerations and Limitations for Bring Your Own Channel for Messaging](https://help.salesforce.com/s/articleView?id=service.partner_messaging_consideration_and_limitations.htm&release=264.0.0&type=5 "Before starting your setup process, review the considerations and limitations for Bring Your Own Channel for Messaging.")

- **[Messaging Channels Preview Default Settings](https://help.salesforce.com/s/articleView?id=service.messaging_channel_default_settings.htm&release=264.0.0&type=5)**  
    When you turn on WhatsApp, Facebook, SMS messaging, or LINE messaging in Salesforce Go, these settings become active.

#### See Also

- [Compare Messaging Channel Capabilities](https://help.salesforce.com/s/articleView?id=service.livemessage_managed_package_lex_differences.htm&release=264.0.0&type=5 "Explore the capabilities of Messaging channels in Agentforce Service (formerly Service Cloud).")