How does the HubSpot integration compare?

Synthflow offers a HubSpot Marketplace listing that syncs calls and contacts. Outreach Master goes deeper: workflow triggers, native activities, custom properties for AI insights and BANT signals, plus embedding inside HubSpot sequences.

Can Synthflow be triggered from HubSpot Workflows?

Only in a limited way — usually via webhooks or the Marketplace app. Outreach Master ships a native HubSpot Workflow action where script, agent and retry rules are configured right inside the workflow.

Is Synthflow GDPR compliant?

Synthflow provides GDPR clauses but hosts primarily outside the EU. Outreach Master hosts exclusively in Frankfurt with a German Art. 28 GDPR DPA — relevant for DACH teams with strict compliance requirements.

What does migration cost?

No setup fee. Scripts and voice agents can be rebuilt in 1–2 hours. 28-day free trial, then pay-per-use for call minutes.

Alternative for HubSpot

Synthflow AI

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Outreach Master

Synthflow AI alternative for HubSpot

AI voice agents inside HubSpot sequences instead of an isolated no-code platform.

TL;DR

Synthflow AI is a strong no-code platform for building AI voice assistants — but its HubSpot connection runs through the Marketplace app and stays focused on logging. Outreach Master is the HubSpot-native alternative: AI phone calls are triggered from HubSpot Workflows, logged on the contact (transcript, summary, BANT) and embedded into the same sequence as email and LinkedIn — pay-per-use, EU hosting, German DPA.

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About Synthflow AI

No-code platform for AI voice assistants (inbound & outbound) with a HubSpot Marketplace listing.

Synthflow is a flexible voice-agent builder with a HubSpot Marketplace listing. Great if you mainly answer inbound calls or automate isolated outbound use cases. Sales teams with HubSpot as master CRM need more: calls as a native step inside the sequence, workflow-based triggers and AI insights directly on the contact. That is exactly where Outreach Master fits.

Feature comparison in detail

Where the differences lie – feature by feature.

Feature	Synthflow AI	Outreach Master
Autonomous AI voice agents (outbound cold calls)
Native HubSpot CRM integration
Trigger via HubSpot Workflows
Calls auto-logged as HubSpot activity
AI summary, BANT signals & next steps in HubSpot
Multichannel: AI calls inside email/LinkedIn sequence
Meeting booking during the call
EU hosting & GDPR DPA
Pay-per-use pricing (per-second)
Multilingual voice agents (DE/EN)

✓ fully supported · – partial/manual · ✗ not supported

Pricing & terms

What does the solution cost – and what to watch out for.

Criterion	Synthflow AI	Outreach Master
Entry price	ab ~29 $/Monat + Minuten	49 €/User/Monat · Pay-per-Use Calls
HubSpot integration	Marketplace-App, primär Logging	nativ, Trigger + Logging + AI-Insights
Multichannel (email/LinkedIn)	nicht enthalten	in HubSpot-Sequenz integriert
EU hosting	US-basiert	Frankfurt (EU)

Pricing based on publicly available information as of 2025. Actual terms may vary.

Which tool fits you?

Pick the solution that fits your setup – or combine both.

Choose Synthflow AI

You need flexible no-code voice agents beyond HubSpot (e.g. inbound hotline).
You want voice agents outside sales too (support, receptionist).
Multichannel sequencing inside HubSpot is not relevant.

Recommended for HubSpot

Choose Outreach Master

HubSpot is master CRM and AI calls should be workflow-triggered.
You want AI phone calls in the same sequence as email and LinkedIn.
AI summary, BANT signals and next-step suggestions must land on the HubSpot contact automatically.
EU hosting (Frankfurt) and a German Art. 28 GDPR DPA are mandatory.

Migration & setup

What switching looks like in practice.

Synthflow AI

Outreach Master

In practice: existing Synthflow scripts can be rebuilt as Outreach Master agents (script + goal + retry rules). HubSpot Workflows trigger the call, activities are auto-logged — no parallel voice tool needed. Typical setup: 1–2 hours.