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Warmline

Why This is an Opportunity

Re-engagement is one of the highest-ROI activities in SaaS but most small teams just... forget to do it. This is a focused, opinionated tool that does one thing well — and the build is a satisfying combo of scheduling logic, email templating, and a clean queue UI.

Key Pain Points

  • You have 200 expired trials in your database and zero system for reaching back out to them
  • You ship the feature someone churned over but have no way to automatically let them know
  • Your 'win-back' strategy is someone remembering to send a manual email, which happens maybe twice a year
  • Full marketing automation tools are $300/mo overkill when you just need timed follow-up emails
Market Opportunity
SMB Email Re-engagement and Lifecycle Marketing Automation Software Market
Current Size (2026)
$1.9B
Projected (2036)
$6.9B
CAGR
14.1%
This market is projected to grow 274% over the next 10 years, reaching $6.9B by 2036.

Original Discovery

Small B2B companies know they should follow up with churned users and trial-expirers but the timing and messaging is always awkward. Warmline is a re-engagement calendar — you set rules like "email trial users 30 days after expiry" or "check in with churned accounts after we ship feature X," write the templates once, and Warmline queues and sends them at the right time via Resend. It turns "we should reach out to old leads" from a vague intention into something that actually happens.

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