Datasigma vs CampaignStack

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Datasigma compared with CampaignStack
Detail	Datasigma	CampaignStack
What it does	B2B contact data from public web sources with verified emails and source citations	LinkedIn outreach automation that finds qualified leads, writes personalized messages in your voice, books meetings, and prepares you with context.
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Freemium	Freemium
Pricing	Free plan: 100 credits (one-time). Starter: $99/month with 2,000 credits. Growth: $189/month with 5,000 credits. Pro: $499/month with 15,000 credits. One credit reveals a contact's email and phone number.	Free: one LinkedIn account, one workspace, 100 credits per day, no card required. Workspace plan: $299/month (monthly) or $249/month (billed annually at $2,988/year), includes 15,000 monthly credits. Each additional workspace costs $299/month. Extra credit packs: $75 for 5,000 credits, $249 for 20,0
Key features	101M+ verified business contacts indexed from public web sources Source URL citation on every record for verification Real-time email verification and validation Advanced search filters by industry, location, and company size CSV export with verified contact data Exclude existing contacts and suppress lists API access for programmatic data retrieval MCP integration for AI agents CRM and data enrichment integration 2 in 3 contacts not on other prospecting platforms	Lead sourcing from LinkedIn, Apollo, Clay, and CSV Intent detection and buying signals AI-powered message drafting in your voice Human review queue on by default Per-account daily budgets and warm-up ramps Meeting booking and calendar integration Meeting brief with objections and talking points A/B testing with reply scoring Unified inbox across all accounts and workspaces Email sending through Gmail with warm-up
What makes it different	Most contacts not available on LinkedIn or other prospecting platforms Every contact has a public source URL to verify the data Indexes the open web instead of reselling the same LinkedIn lists Pay only for contacts you actually use Real-time email validation with automatic credit refunds for invalid emails	Runs safely on client accounts without restrictions AI learns and maintains your personal voice Intelligent lead scoring against your ideal customer Stricter safety limits than LinkedIn itself
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	Not checked yet no change since last check	10 −1 (down) since last check
Trust Flow (Majestic)	1	6
Citation Flow (Majestic)	22	27
Referring domains (Majestic)	6	37

5 details filled in for both companies.

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