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Every message Fuse sends on your behalf can be recorded against the person in your CRM, so your team sees the full history without leaving it.

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What gets created

This is where CRMs differ most. HubSpot gives the richest result. A sent email becomes a real email engagement on the contact’s timeline, and a dialer call becomes a call record. LinkedIn has no natural equivalent in HubSpot, so those become tasks. Zoho logs dialer calls in its native Calls module, and everything else as tasks. Attio only has notes, so everything becomes a note on the person. See troubleshooting for why sent emails do not appear in Attio’s Emails tab.

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What is in the record

Each record carries the subject, the date, the id of the campaign it belongs to, and the message body. Calls also include direction, duration, outcome and, where available, the transcript. Call recordings stay in Fuse.

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Records are written once

Fuse creates each record once and never edits it afterwards. It is a log of something that happened at a point in time.
That means opens, clicks and replies do not appear on these records. They happen after the message was already logged, so they live on the contact record instead, in engagement fields.

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What gets recorded

Activity syncing is on by default and covers:
  • Emails sent by campaigns, and emails from your connected inbox that are part of a campaign conversation
  • LinkedIn messages, connection requests and InMail sent by a campaign. Messages you send by hand are not recorded yet.
  • Calls from the dialer, with their transcripts
There is no toggle for these in the app yet. You can turn activity sync off, or only calls, with the MCP server’s update_crm_settings tool, or ask support. Emails and LinkedIn cannot be turned off separately yet.

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Timing

Activity sync runs every hour, at 15 minutes past, and picks up anything at least 15 minutes old. That wait lets a call’s outcome and transcript land first. Most activity appears in your CRM 15 to 75 minutes after it happens. If you have just connected your CRM, the first run backfills your history, which can take several passes on a busy account.

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When a person is not in your CRM yet

Activity attaches to a contact record, so if the person has not been pushed yet there is nothing to attach to. Fuse handles this by adding the missing contact first, then recording the activity against them. If the contact cannot be created, most often because they have no email address, the activity is skipped. See contacts and companies.