---
schema_version: "1"
id: 11b3ad9aecbf135aa3c78850dc0df8b7de68b6cfa44ae870640b72a90d20cc70
title: Event Sync
collection: admin
version: current
locale: en-us
portal_url: https://docs.salesforce.com/admin/current/en-us/sales/264-0-0/lightning_sync_admin_event_overview.md
canonical_url: https://help.salesforce.com/s/articleView?id=sales.lightning_sync_admin_event_overview.htm&release=264.0.0&type=5
source_site: help.salesforce.com
content_type: documentation
content_hash: 83d400f5a02bef79b622cebd33bfb2d6b2eee3fbeed9e03dda7e565060a77853
description: If you’re set up for Lightning Sync, learn how we match your Microsoft or Google events with relevant Salesforce events, leads, and contacts. You can also learn what we do when we can’t resolve a match, which events we sync, and how often.
products:
  - Sales Cloud
  - Cross Cloud
  - Service Cloud Voice
release: "264"
---
# Event Sync

If you’re set up for Lightning Sync, learn how we match your Microsoft or Google events with relevant Salesforce events, leads, and contacts. You can also learn what we do when we can’t resolve a match, which events we sync, and how often.

### Required Editions

<table class="slds-table slds-table_bordered slds-max-medium-table_stacked slds-m-bottom_small edition"><colgroup><col></colgroup><tbody><tr class=""><td class="slds-cell-wrap" style="vertical-align:top;">Available in: Salesforce Classic, Lightning Experience, and all versions of the Salesforce app</td></tr><tr class=""><td class="slds-cell-wrap" style="vertical-align:top;">Available in: <strong>Professional</strong>, <strong>Enterprise</strong>, <strong>Performance</strong>, <strong>Unlimited</strong>, and <strong>Developer</strong> Editions</td></tr></tbody></table>

## Which Events Sync and How Are They Matched?

Lightning Sync checks to see whether an event with the same subject, date, and start and end times exists in both Salesforce and Microsoft or Google. If events match, they’re mapped to each other and begin to sync between applications. If no events match, a new event is created, and the two are mapped to sync between your external calendar.

Because recent events are the most relevant to you, after your admin initiates sync, Lightning Sync attempts to match only:

- New Salesforce events after you create them or existing Salesforce events after you update them.
- New and existing Microsoft or Google events that fall within the filter and sync settings set by your Salesforce admin.

Event sync can take up to a day or more. There are various factors that can impact sync wait time, such as:

- When many users are set up to start syncing around the same time
- When sync is pending for a significant number of events

For example, at a large company, an extended wait time is likely upon the first sync.

To learn about your sync direction, sync filters, and other settings, talk to your Salesforce admin. To familiarize yourself with features, see [Learn About Lightning Sync for Microsoft® Exchange Features](https://help.salesforce.com/articleView?id=productivity_sync_exchange_admin_overview.htm&language=en_US) or [Learn About Lightning Sync for Google Features](https://help.salesforce.com/articleView?id=productivity_sync_exchange_admin_overview.htm&language=en_US).

## Unresolved Events

After syncing, events that can’t be related to a lead or contact are added to the Unresolved Items list in your Personal Settings in Salesforce. From there, you can choose which Salesforce leads or contacts to relate to the synced event. Or you can remove the event from the list and opt not to relate a record.

Most synced events are added to the Unresolved Items list, unless admins select the **Automatically Relate Events to Contacts or Leads** option from users’ sync configurations. This option automatically relates a relevant lead or contact to synced events.

#### See Also

- [Events Automatically Related to Contacts or Leads](https://help.salesforce.com/s/articleView?id=sales.lightning_sync_admin_event_auto_relate.htm&release=264.0.0&type=5 "Lightning Sync can automatically relate Microsoft or Google events to relevant contacts or leads in Salesforce. Learn how that feature works, and how it interacts with other Salesforce options.")
- [Resolve Your Synced Events](https://help.salesforce.com/s/articleView?id=sales.outlookcrm_unresolved_events.htm&release=264.0.0&type=5 "When non-recurring events sync from your email app with Einstein Activity Capture, Lightning Sync, or Salesforce for Outlook, they appear in your Salesforce calendar and on the My Unresolved Items page. Use this page to either assign events to related Salesforce records or confirm that you want to leave them unassigned.")
- [Considerations for Syncing Events](https://help.salesforce.com/s/articleView?id=sales.exchange_sync_admin_considerations_events_general.htm&release=264.0.0&type=5 "Familiarize yourself with these considerations for syncing events with Lightning Sync.")
- [Define Lightning Sync for Microsoft® Exchange Settings for Reps](https://help.salesforce.com/s/articleView?id=sales.exchange_sync_admin_configurations.htm&release=264.0.0&type=5 "After reps prepare their Exchange events to sync with Salesforce, admins can define sync settings for groups of reps in Lightning Sync configurations. This step kicks off the sync process, and determines how reps contacts and events sync between applications.")