Mailwarm alternatives
TL;DR: 12 companies doing similar work to Mailwarm in B2B, ranked by how closely they match what Mailwarm actually does — not just by category.
How this list was built: every company here is Y Combinator-backed and shares at least one category with Mailwarm. They are scored on how closely their own description overlaps with Mailwarm's, and all facts shown come from the YC company records — nothing is estimated.
What are the best alternatives to Mailwarm?
| Alternative | What it does | Batch | Team | Status |
|---|---|---|---|---|
| Champ | AI SDR | Summer 2022 | 1 | Active |
| Fithub | — | Winter 2010 | — | Inactive |
| Insoshi | — | Winter 2008 | — | Inactive |
| Hatch | The AI CSR Platform | Winter 2019 | 73 | Acquired |
| Infer | Operating system for insurance agencies | Summer 2021 | 9 | Active |
| Convex | Software for the commercial services industry. | Winter 2019 | 110 | Acquired |
| Relate | All-in-One Sales and Marketing CRM for B2B teams | Summer 2022 | 7 | Active |
| IncidentFox | AI SRE agent that triages, coordinates, and fixes production incidents | Winter 2026 | 2 | Active |
| VOIQ | Conversational AI VoiceBots for Business | Summer 2015 | 8 | Inactive |
| SolidStage | Sysadmin as a service. We make deploying, configuring, monitoring,… | Winter 2012 | — | Inactive |
| BlitzIQ | Note taking workspace for B2B sales teams | Winter 2019 | — | Inactive |
| Slik | Slik automates your sales. | Summer 2017 | 2 | Inactive |
Is Mailwarm still active?
Mailwarm is still operating, so switching is a choice rather than a forced migration. Compare on fit and price rather than urgency.
How was this list put together?
Every company here is Y Combinator-backed and shares at least one category with Mailwarm. They are then ranked on how closely their own description overlaps with Mailwarm's, so the closest matches come first rather than whoever happens to share a tag.