Sigma Dialer

Paid APIWeb

What Sigma Dialer is

Sigma Dialer is a cloud voice platform combining predictive outbound dialing, inbound ACD, compliance controls, and an agent desktop. Outbound modes include predictive, progressive, preview, and power dialing. Inbound tools provide skills-based routing, a visual IVR builder, callback-in-queue, and whisper transfer. Agents use a browser WebRTC softphone and can dial from Chrome without installing software. Calls can be transcribed, summarized, and scored, with risk-phrase detection and coaching insights. Before dialing, the compliance layer evaluates calling windows, curfews, do-not-call lists, consent logging, and recording disclosure. Sigma lists many CRM, data, communication, and analytics integrations, plus an open REST API and real-time webhooks. Recordings use per-tenant encryption at rest, retention can range from 30 days to seven years, and customers can select listed regional storage locations. Pricing is available by quote.

Who it suits

Sigma Dialer suits teams needing browser-based inbound and outbound voice operations with compliance checks and call analysis. It also fits organizations requiring integrations, regional data choices, and configurable recording retention.

What it does well

Predictive, progressive, preview, and power dialing
Visual IVR and skills-based routing
Browser WebRTC softphone
Transcription, scoring, and risk detection
Open REST API and real-time webhooks

What to know first

Voice-only digital channel scope
Pricing requires a quote
International and short-code messaging billed separately
HIPAA BAA available only on request

Plans

Plan	Billed and limits	Price
Per-seat quote	Flat per-seat; speak to the team for a quote scoped to seat count and geography. · Domestic minutes, recordings, AI transcription, and compliance included · International and short-code messaging billed at carrier pass-through rates	On request

As sigmadialer.com lists them, read 12 Oct 2026. The maker's own page has the final word.

Verdict

Sigma Dialer brings outbound, inbound, compliance, and agent tools into one cloud service. Its broad integrations and controls suit structured contact-center operations, while pricing requires direct discussion.

Facts from Sigma Dialer's own pages

AI call analysis: Calls are transcribed, summarized, and scored, with risk phrase detection and coaching insights. · sigmadialer.com, 12 Oct 2026
API: Sigma lists an open REST API and real-time webhooks for connecting other systems. · sigmadialer.com, 12 Oct 2026
Browser access: Agents use a browser based WebRTC softphone, and the site says agents can dial from Chrome with zero installation. · sigmadialer.com, 12 Oct 2026
Compliance: The site says TCPA calling windows, state calling curfews, federal and internal DNC lists, consent logging, and recording disclosure are evaluated before dialing. · sigmadialer.com, 12 Oct 2026
Data residency: The site says customers can choose where recordings, transcripts, and metadata live, with US, EU, APAC, Canada, UK, and Brazil regions listed. · sigmadialer.com, 12 Oct 2026
Deployment: The site describes the product as a cloud platform and says most teams place their first live call on day one. · sigmadialer.com, 12 Oct 2026
Dialing modes: Outbound dialing supports predictive, progressive, preview, and power modes. · sigmadialer.com, 12 Oct 2026
Digital channel scope: voice_only · sigmadialer.com, 22 Sept 2026
Inbound: Inbound features include skills-based routing, a visual IVR builder, callback-in-queue, and whisper transfer. · sigmadialer.com, 12 Oct 2026
Inbound calling: Yes · sigmadialer.com, 22 Sept 2026
Integrations: The site lists Salesforce, HubSpot, Zendesk, Pipedrive, Slack, Intercom, Snowflake, BigQuery, Segment, Redshift, Twilio, Amazon S3, Databricks, Claude, OpenAI, and webhooks. · sigmadialer.com, 12 Oct 2026
IVR builder: Yes · sigmadialer.com, 22 Sept 2026
Outbound dialer: Yes · sigmadialer.com, 22 Sept 2026
Product: Sigma Dialer combines a predictive dialer, inbound ACD, compliance layer, and agent desktop in a cloud platform. · sigmadialer.com, 12 Oct 2026
Recording security: Call recordings are encrypted at rest with per-tenant keys, and configurable retention ranges from 30 days to 7 years. · sigmadialer.com, 12 Oct 2026
Security attestations: The site lists SOC 2 Type II, HIPAA BAA on request, GDPR Art. 28 DPA, PCI DSS Level 1 SAQ-D, and ISO 27001 certification in 2025. · sigmadialer.com, 12 Oct 2026
Support: The site says a named launch engineer supports onboarding and sales responds in under four hours on business days. · sigmadialer.com, 12 Oct 2026

Where Sigma Dialer stands on Freedom251

Telemarketing#13 of 23
Call Center Software#99 of 122