Mails.ai vs Woodpecker
Mails.ai
mails.ai
Woodpecker
woodpecker.coSide by side
| Figure | Mails.ai | Woodpecker |
|---|---|---|
| Price from | $20/mo | $0.08/mo |
| Free plan | Yes | — |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Plans published | 3 | 15 |
| Spec score · Cold Email Software | 8.2 (#11) | 8.2 (#13) |
| Integrations | The integrations page lists Claude Code, Cursor, Cline, Continue, Windsurf, OpenAI Agents SDK, Anthropic SDK, LangGraph, Mastra, Vercel AI SDK, and Pydantic AI. | Ready-made or API-key integrations include Zapier, HubSpot, Pipedrive, Google Sheets, Slack, Salesforce and Airtable. |
| Product | Mails.ai provides email infrastructure and a programmatic email API for AI agents to send, receive, and parse email. | Woodpecker describes itself as a cold email and LinkedIn outreach tool for businesses doing outbound. |
| Support | The pricing page includes email support on Pro and priority support on Scale. | The about page says customers can ask questions and expect an answer within hours. |
Plans
Woodpecker
- New Domains$1 a year
- Email addresses (Maildoso, Mailforge, Infraforge or Azure)$4 a month
- Additional warm-up$5 a month
- Additional warm-ups$5 a month
- White Label$5 a month
- Email addresses (Google or Microsoft)$6 a month
- Google or Microsoft email address$6 a month
- Contacted prospects$7 a month
- Additional Lead Finder credits$10, paid once
- Lead Finder credits$10, paid once
In their own words
Mails.ai
Mails.ai provides email infrastructure and an API for AI agents to send, receive and parse transactional or conversational email. It is available on the web and through an API, with REST, webhooks, an MCP server, and TypeScript and Python SDKs. Inbound replies arrive as structured payloads containing sender, subject, body, headers and attachments, as well as an injection score and sender reputation. All plans scan inbound messages for prompt injection; optional classification can extract intent, entities and urgency for $0.003 per inbound. Listed integrations include Claude Code, Cursor, Cline, Continue, Windsurf, OpenAI Agents SDK, Anthropic SDK, LangGraph, Mastra, Vercel AI SDK and Pydantic AI. The maker describes the product as early, live and self-serve, and says the API refuses cold outreach. Free costs nothing for 3,000 events and one agent. Pro is $20 a month; Scale is $99 a month. Sends stop at a plan's monthly cap; excess inbound replies are stored but not scanned or sent to the webhook. The maker says it lacks SOC 2 today and does not include HIPAA in Phase 1 scope.
Woodpecker
Woodpecker is a cold email and LinkedIn outreach tool for businesses doing outbound. Its multichannel sequences can combine email with LinkedIn profile visits, connection requests, direct messages, and InMails. Listed deliverability tools include email verification, warm-up, inbox rotation, monitoring, adaptive sending, and domain audits. Automation includes condition-based campaigns and workflows, A/B tests with up to 5 versions, and reply sorting by interest level. Woodpecker also lists a B2B lead database of more than 1 billion. Integrations include Claude, Clay, Pipedrive, HubSpot, Calendly, Zapier, and Google Sheets, with API, webhooks, MCP Server, and CLI access. It is listed for web and API. The pricing note is from $35/mo; a free plan and trial are also listed. The trial includes all features for 14 days or until 100 cold emails have been sent, whichever comes first. If the contacted-prospect limit is exceeded, campaigns stop sending to new prospects until the limit renews or the account is upgraded. The company says it serves lead generation, sales, and recruitment professionals and was founded in 2015 in Wrocław, Poland.