Instantly
7.8#2 in outreach automationFrom $47 a monthAndroidiOSWebAPI
VisitInstantly vs Mails.ai
What both publish
| Fact | Instantly | Mails.ai |
|---|---|---|
| Integrations | The marketplace lists integrations including Slack, HubSpot, Zapier, RB2B, BetterContact, Replit, Gojiberry, and Findymail. | The integrations page lists Claude Code, Cursor, Cline, Continue, Windsurf, OpenAI Agents SDK, Anthropic SDK, LangGraph, Mastra, Vercel AI SDK, and Pydantic AI. |
| Product | Instantly describes itself as a sales platform combining cold email automation with a built-in B2B lead database. | Mails.ai provides email infrastructure and a programmatic email API for AI agents to send, receive, and parse email. |
Instantly plans
- Free trialFree
- Growth (Outreach)$47 a month
- Growth$47 a month
- Growth (Credits)$47 a month
- Growth Credits$47 a month
- Starter$94 a month
Mails.ai plans
- FreeFree
- Pro$20 a month
- Scale$99 a month
Pick Instantly if…
Instantly may suit agencies, freelancers, founders, and sales or marketing teams looking to combine email outreach with lead discovery. Its trial limits and paid outreach plan are relevant for teams assessing sending needs.
Pick Mails.ai if…
Mails.ai suits developers building AI agents that need to send and process transactional or conversational email. It is not for cold outreach, which the API refuses.