Outbound integration for HubSpot and Salesforce

Your outbound tools send the messages. OutboundSync makes sure your CRM knows what happened—across email, social, and phone.

Castor mascot presenting the OutboundSync platform

Trusted by leading revenue teams

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Sound familiar?

You send thousands of messages across three platforms. Someone replies. Your CRM? No idea it happened.

  • Replies land in the wrong inbox—or no inbox at all
  • Outbound activity is invisible in the CRM
  • Block lists live in a spreadsheet nobody updated this quarter
  • Zapier chains held together with duct tape (and one person who understands them)

Manual BCC logging, CSV exports, and duct-taped automations aren't a strategy. They're a workaround. And they break right when it matters.

How it works

Three steps. No middleware to maintain.

  1. 1

    Connect your outbound platforms

    Link the tools your team already uses—email, social, phone, and more.

  2. 2

    OutboundSync routes activity to your CRM

    Every send, reply, open, click, and unsubscribe gets logged on the right record. Automatically.

  3. 3

    Replies, attribution, and block lists stay in sync

    Your CRM becomes the single source of truth for outbound. No exports, no workarounds.

OutboundSync webhook receiver configuration: Smartlead events syncing to HubSpot Company and Contact.

Everything lands in your CRM

Revenue attribution

Revenue attribution

See which outbound campaigns actually create pipeline—across email, social, and phone. No more guessing what drove the deal.

Workflows and activities

Workflows that scale

Replies go to the right rep. Activity logs itself. Every channel, every platform, handled automatically.

Block lists

Block lists

Stop contacting people who said stop—across every platform. Manage it from your CRM, not a spreadsheet.

Pick your CRM. We'll handle the rest.

Start with HubSpot or Salesforce, then connect the outbound tools your team already runs.

Teams that stopped worrying about outbound data

“Easy. It's way better than us doing it ourselves and trying to think of every situation. OutboundSync takes care of it.”

Eric Nowoslawski
Eric Nowoslawski

Founder · Growth Engine X

“Setup took minutes. The block list sync alone saved us from embarrassing duplicate outreach.”

Enzo Carasso
Enzo Carasso

Founder · Implementation Partner

“Our clients can now pinpoint exactly where each deal originates and measure the true impact of outbound.”

Alex Fine
Alex Fine

Co-Founder · Understory

“We are doing scaled, omnichannel outreach. We couldn't do it without OutboundSync—it brings it all together.”

Danielle Rader
Danielle Rader

Growth · Ship Science

“Wiring up multiple tools as part of a GTM system requires 100% data accuracy and attribution in your CRM. OutboundSync takes care of it, stress free.”

Bobby Offterdinger
Bobby Offterdinger

Founder · TAM to Target

“OutboundSync brings the power of modern outbound to the most established CRMs in the market. They enable our sales team to run successful multi-channel campaigns on steroids.”

Mike Jones
Mike Jones

Founder · TeamUP

SOC 2 Type II certifiedHubSpot App PartnerSalesforce External Client AppInstantly Certified PartnerSmartlead Certified PartnerHeyReach ExpertEmailBison Certified Partner

See it with your CRM

Book a quick walkthrough. Setup takes minutes, no long-term contract.