Does Smartlead have a native HubSpot integration?

Yes, and it handles basic sync well. It logs sends and replies as HubSpot email activities, but opens and clicks land as notes, it runs primarily one-way, and it does not cover Salesforce — Smartlead routes Salesforce through OutboundSync. OutboundSync adds full two-way activity, both CRMs, and block-list sync.

Is HeyReach’s HubSpot integration two-way?

No. HeyReach’s HubSpot-verified connector logs social activity one-way, from HeyReach into HubSpot, and cannot enforce CRM block lists back in HeyReach. It is HubSpot-only. OutboundSync syncs the same social activity into HubSpot and Salesforce and pushes CRM lists back to HeyReach exclusion lists.

Does EmailBison have a native CRM integration?

No. EmailBison exposes an API and webhooks, and its own site credits OutboundSync for HubSpot and Salesforce sync. So this is not a native-versus-OutboundSync decision — it is OutboundSync or a DIY build that your team maintains as the API and your CRM schema change over time.

My tool already syncs to HubSpot — why do I need OutboundSync?

Built-in connectors are usually one-way, HubSpot-only, and note-based for opens and clicks. OutboundSync writes the full engagement lifecycle as structured activity across HubSpot and Salesforce, enforces block lists both ways, and keeps campaign attribution intact so reporting and workflows do not break.

Which CRMs does OutboundSync support beyond HubSpot and Salesforce?

The tools’ native connectors stop at HubSpot, apart from Instantly’s Salesforce enrollment. OutboundSync also syncs these platforms into Close and Attio today (beta), with Pipedrive and HighLevel on the roadmap — so if your CRM is not HubSpot, OutboundSync is usually the only way to get this activity in.

Is OutboundSync a native CRM integration too?

Yes. OutboundSync is a native CRM application that writes activity as first-class records — HubSpot timeline and app events, and Salesforce field updates. The difference from a sending tool’s built-in connector is depth: two-way sync, both CRMs, block-list enforcement, and attribution.

Native CRM integrations vs OutboundSync: do you still need both?

Smartlead, Instantly, and HeyReach ship their own HubSpot connectors. Here is what each native integration actually does, where it stops, and when OutboundSync is the better fit.

TL;DR

Most outbound tools ship a native CRM connector for basic contact and activity sync, but they are typically one-way, HubSpot-only, and note-based for opens and clicks. Only Instantly has a native Salesforce connector, and it only enrolls contacts. OutboundSync is a native CRM app that adds two-way sync, more CRMs, block-list enforcement, and campaign attribution.

What we mean by “native integration”: the connector a sending tool builds into your CRM. OutboundSync is also native — it runs as a certified CRM app — so the real question is not native versus not, but how deep the sync goes.

Built for teams who run outbound as a system

OutboundSync shipped before any of these platforms had a native CRM integration. We have spent years building the deepest sync in the category, plus the developer and AI/agent tooling to run and manage it — APIs, webhooks, searchable event logs, and skills your team and your agents can build on.

We are on friendly terms with every platform here, and we build as app developers on their marketplaces too. Their native connectors are a fine on-ramp. The difference is who each is built for: a native connector covers the basics, and OutboundSync is built for the pros who run outbound as a system and need every send, reply, and suppression to land correctly across their whole CRM stack.

Last reviewed: Aug 4, 2026 · facts drawn from each vendor’s own documentation.

Find your tool

Whether a native integration is enough depends on which tool you run. Jump to yours.

Instantly Has a native connector

Smartlead Has a native connector

HeyReach Has a native connector

EmailBison No native connector

Native does not mean full activity sync

Native connectors work. The catch is depth: where one exists, the vendor’s own docs describe it as one-way or note-based.

Instantly says native CRM activity sync is one-way, and recommends a partner like OutboundSync or webhooks for governed two-way data (instantly.ai).
Smartlead logs sends and replies as HubSpot activities, but opens, clicks, and bounces are written as notes (helpcenter.smartlead.ai).
HeyReach logs social touches one-way into HubSpot and has no native Salesforce connector (heyreach.io).

OutboundSync writes the full engagement lifecycle as structured CRM records, syncs block lists in both directions, and keeps attribution intact — the parts a one-way connector leaves out.

Tool by tool

Instantly native integration vs OutboundSync

Instantly has native HubSpot and Salesforce connectors, but the Salesforce one only enrolls contacts into Instantly, HubSpot activity is one-way, and Instantly itself points to a partner like OutboundSync for real two-way CRM data.

HubSpot Native, but limited

Native: Imports contacts, lists, and fields into campaigns, maps custom fields, and pushes qualified leads back on defined triggers.

Limit: Activity sync is one-way. Instantly recommends a partner like OutboundSync or webhooks when you need full two-way data written to CRM objects.

OutboundSync: Logs every send, reply, open, click, and unsubscribe as structured HubSpot timeline activity, syncs block lists both ways, and attributes revenue to campaigns.

Source: instantly.ai , instantly.ai

Salesforce Native, but limited

Native: Enrolls Salesforce contacts and leads into Instantly campaigns (Salesforce → Instantly).

Limit: It only pulls contacts into Instantly — it does not write sends, replies, or activity back into Salesforce.

OutboundSync: Writes outbound activity into Salesforce and drives automation through field updates, with block-list sync and campaign attribution built in.

Source: instantly.ai

Instantly points teams to a partner like OutboundSync (or webhooks) when they need governed two-way CRM data rather than the native connector. instantly.ai

When Instantly’s native connector is enough

You only need contacts and basic status in one CRM.
You are validating outbound and can tolerate one-way activity data.

When you need OutboundSync

You need two-way activity — sends, replies, opens, clicks — as structured CRM records.
You run reporting or workflows that break when activity is incomplete.
You want block lists enforced from the CRM across both HubSpot and Salesforce.

Instantly integration · Instantly + HubSpot · Instantly + Salesforce

Smartlead native integration vs OutboundSync

Smartlead's native HubSpot integration handles basic sync well — but it logs opens and clicks as notes, runs one-way, and does not cover Salesforce, which Smartlead's own site routes through OutboundSync.

HubSpot Native, but limited

Native: Logs sends and replies as HubSpot email activities, maps custom fields, and can auto-create deals from lead categories.

Limit: Opens, clicks, bounces, and unsubscribes are logged as notes rather than structured activity, it runs primarily one-way, and it does not move deal stages.

OutboundSync: Writes the full engagement lifecycle as structured HubSpot timeline and app events, syncs suppression lists both ways, and keeps attribution intact for reporting.

Source: helpcenter.smartlead.ai , smartlead.ai

Salesforce No native — routed via OutboundSync

Limit: Smartlead has no native Salesforce connector — its own integrations page routes Salesforce sync through OutboundSync.

OutboundSync: Connects Smartlead to Salesforce directly, writing activity through field updates with block-list sync and campaign attribution — no custom build or middleware.

Source: smartlead.ai

Smartlead's own integrations page names OutboundSync as the way to sync Smartlead activity to HubSpot and Salesforce. smartlead.ai

When Smartlead’s native connector is enough

You are HubSpot-only and mostly need sends and replies on the record.
Note-level detail for opens and clicks is acceptable for now.

When you need OutboundSync

You run on Salesforce, or on both CRMs.
You need opens and clicks as structured activity for reporting and workflows.
You want block lists enforced from the CRM and clean campaign attribution.

Smartlead integration · Smartlead + HubSpot · Smartlead + Salesforce

HeyReach native integration vs OutboundSync

HeyReach's native HubSpot integration logs social activity well, but it is one-way and HubSpot-only — there is no native Salesforce connector, so both CRMs and block-list control come from OutboundSync.

HubSpot Native, but limited

Native: A HubSpot-verified connector logs connection requests, messages, premium messages, and replies as native HubSpot activity, and can pull HubSpot lists in as campaign sources.

Limit: Sync is one-way (social to HubSpot). It cannot enforce CRM block lists back in HeyReach, and it is HubSpot-only.

OutboundSync: Syncs the same social activity into HubSpot and pushes HubSpot lists back to HeyReach exclusion lists so suppression is enforced at the source.

Source: heyreach.io , heyreach.io

Salesforce No native connector

Limit: HeyReach has no native Salesforce connector — native Salesforce tracking is a public roadmap request, reachable otherwise only through generic automation tools.

OutboundSync: Syncs HeyReach social activity into Salesforce directly, so social touches land on the right records alongside email and phone.

Source: heyreach.io , roadmap.heyreach.io

When HeyReach’s native connector is enough

You run social outreach on HubSpot only.
One-way activity logging covers your reporting needs today.

When you need OutboundSync

You run on Salesforce, or on both CRMs.
You need CRM exclusion lists enforced back in HeyReach to protect sender reputation.
You want social activity in the same CRM timeline as email and phone.

HeyReach integration · HeyReach + HubSpot · HeyReach + Salesforce

EmailBison native integration vs OutboundSync

EmailBison has no native HubSpot or Salesforce connector — its own site credits OutboundSync for CRM sync, so this is not a native-vs-OutboundSync choice; it is OutboundSync or a DIY build.

HubSpot No native — routed via OutboundSync

Limit: No native HubSpot connector. EmailBison exposes an API and webhooks, and its homepage credits OutboundSync for CRM integrations.

OutboundSync: Connects EmailBison to HubSpot directly, logging sends, replies, and unsubscribes as structured timeline activity with block-list sync and attribution.

Source: emailbison.com , emailbison.com

Salesforce No native — routed via OutboundSync

Limit: No native Salesforce connector — the same API-and-webhooks-or-OutboundSync situation as HubSpot.

OutboundSync: Connects EmailBison to Salesforce directly, writing activity through field updates with block-list sync and campaign attribution.

Source: emailbison.com , emailbison.com

EmailBison's own site states that its HubSpot and Salesforce integrations are powered by OutboundSync. emailbison.com

When EmailBison’s native connector is enough

You have engineering time to build and own an API or webhook integration.
You only need a narrow slice of events and can maintain it yourself.

When you need OutboundSync

You want EmailBison activity in HubSpot or Salesforce without building it.
You need block lists, attribution, and reliable near-real time sync out of the box.
You would rather not own retries, idempotency, and field mapping over time.

EmailBison integration · EmailBison + HubSpot · EmailBison + Salesforce

Beyond HubSpot and Salesforce

Native connectors stop at HubSpot — Instantly adds Salesforce enrollment, and that is the end of the list. OutboundSync also syncs these tools into Close and Attio today, with Pipedrive and HighLevel on the roadmap. If your CRM is not HubSpot, OutboundSync is usually the only way to get this outbound activity in at all.

HubSpot Live on OutboundSync
Salesforce Live on OutboundSync
Close Beta on OutboundSync
Attio Beta on OutboundSync
Pipedrive On the roadmap
HighLevel On the roadmap

OutboundSync is SOC 2 Type II compliant with a public Trust Center, and every claim above links to the vendor’s own documentation. Compare the full set of integration paths or see pricing.

Native integration FAQ

Does Smartlead have a native HubSpot integration?

Yes, and it handles basic sync well. It logs sends and replies as HubSpot email activities, but opens and clicks land as notes, it runs primarily one-way, and it does not cover Salesforce — Smartlead routes Salesforce through OutboundSync. OutboundSync adds full two-way activity, both CRMs, and block-list sync.
Does Instantly sync to Salesforce natively?

Instantly has a native Salesforce connector, but it only enrolls Salesforce contacts and leads into Instantly campaigns — it does not write sends, replies, or activity back into Salesforce. For two-way activity in Salesforce, Instantly itself points to a partner like OutboundSync or to webhooks.
Is HeyReach’s HubSpot integration two-way?

No. HeyReach’s HubSpot-verified connector logs social activity one-way, from HeyReach into HubSpot, and cannot enforce CRM block lists back in HeyReach. It is HubSpot-only. OutboundSync syncs the same social activity into HubSpot and Salesforce and pushes CRM lists back to HeyReach exclusion lists.
Does EmailBison have a native CRM integration?

No. EmailBison exposes an API and webhooks, and its own site credits OutboundSync for HubSpot and Salesforce sync. So this is not a native-versus-OutboundSync decision — it is OutboundSync or a DIY build that your team maintains as the API and your CRM schema change over time.
My tool already syncs to HubSpot — why do I need OutboundSync?

Built-in connectors are usually one-way, HubSpot-only, and note-based for opens and clicks. OutboundSync writes the full engagement lifecycle as structured activity across HubSpot and Salesforce, enforces block lists both ways, and keeps campaign attribution intact so reporting and workflows do not break.
Which CRMs does OutboundSync support beyond HubSpot and Salesforce?

The tools’ native connectors stop at HubSpot, apart from Instantly’s Salesforce enrollment. OutboundSync also syncs these platforms into Close and Attio today (beta), with Pipedrive and HighLevel on the roadmap — so if your CRM is not HubSpot, OutboundSync is usually the only way to get this activity in.
Is OutboundSync a native CRM integration too?

Yes. OutboundSync is a native CRM application that writes activity as first-class records — HubSpot timeline and app events, and Salesforce field updates. The difference from a sending tool’s built-in connector is depth: two-way sync, both CRMs, block-list enforcement, and attribution.

More integration comparisons

Compare OutboundSync to the other paths teams weigh for outbound CRM sync.