Sponsor CRM for solo newsletter and podcast creators
Stage
Startup
Startup
Founded
2025
2026
Based in
Not given
Not given
Pricing model
Freemium
Paid
Pricing
Starter: $149/month for 10 collabs per month and 1 live campaign with email support. Growth: $349/month for 40 collabs per month and 5 live campaigns with priority support. Agency: Custom pricing for volume collabs and campaigns with dedicated support. All plans include a 14-day free trial with no s
Starter: $39/mo (monthly) or $33/mo billed annually ($390/year with 2 months free). Pro: $59/mo (monthly) or $49/mo billed annually ($590/year with 2 months free). Business: $99/mo (monthly) or $83/mo billed annually ($990/year with 2 months free). All plans include a 14-day free trial with no credi
Key features
Creator matching against brief requirements
Automated outreach and negotiation
Content quality checks against brief
Product shipping and tracking
Escrow payment processing
Performance reporting with cost per view
Gifted, paid, and affiliate payment options
Deadline chasing and reminder management
Creator rebook list generation
Usage rights and exclusivity agreements
Sponsor pipeline Kanban board with deal stages from Pitched to Churned
Magic-link sponsor portal with no account or password required
Automated renewal reminders at 30, 14, and 7 days before renewal
Invoice tracking with auto-numbered records and payment status
One-page branded, print-ready performance reports
Revenue dashboard with MRR, renewal rate, deal size, and quarterly trends
Platform-agnostic integration with Substack, Ghost, Kit, Beehiiv, and any podcast host
Read-only REST API included with Business plan
Custom reminder cadence and report branding on Pro and Business plans
What makes it different
No markup on creator fees - platform takes only subscription fee
Content verified against brief before delivery to brand
Fast campaign turnaround - shortlist in minutes, content in ~10 days
Magic-link portal eliminates sponsor account creation and email friction
One saved renewal pays for 8.5–51 months of KeelStack service
Sadie
KeelStack