cold0
ConditionalFree open-source cold email sender built with SvelteKit. Contact lists, personalized templates with dynamic variables, and PostgreSQL-backed management.
Tool matchup
cold0 vs OSS Cold Email Sender (Show HN) for consultants. Compare two Lead Gen & Outbound tools on pricing, setup speed, strengths, and Curalo score.
Free open-source cold email sender built with SvelteKit. Contact lists, personalized templates with dynamic variables, and PostgreSQL-backed management.
Lightweight open-source bulk sender. SMTP + CSV, basic tracking. For consultants who prefer building over buying.
OSS Cold Email Sender (Show HN) leads by 25 points (clear winner).
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| C cold0 | OC OSS Cold Email Sender (Show HN) | |
|---|---|---|
| Quick facts | ||
| Pricing sanity | Free | Free |
| Setup speed | Long setup | Long setup |
| Intelligence | Focused | Medium |
| Integrations | 2+ | 2+ |
| Score breakdown | ||
| Outcome fit | 10/25 | 20/25 |
| Setup speed | 6/20 | 6/20 |
| Pricing sanity | 14/15 | 14/15 |
| Integrations | 6/15 | 10/15 |
| UX polish | 5/15 | 11/15 |
| Trust & support | 3/10 | 8/10 |
| Summary | ||
| Best for | Developers who want to learn cold email infrastructure from the ground up. | Technically comfortable consultants who want minimal OSS outreach tools. |
| Key strength | Strong on pricing | Strong on pricing |
| Main weakness | Strong on setup speed | Strong on setup speed |
Guides
Your tool needs change at every growth stage. A practical guide to the technology, processes, and decisions that take you from solo consultant to small firm — without losing what made you great.
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