Alternatives to Close CRM
Close CRM: Sales CRM with built-in calling, email, SMS, automation, and AI. 8 products similar to Close CRM, compared on pricing, free tier, API, MCP server, SDK and open source. 8 of 8 have a free tier, 8 of 8 have an API, 7 of 8 offer an MCP server.
- Brevo
Email & SMS Marketing, CRM & Automation Platform
- SendPulse
Multi-channel marketing automation platform with email, SMS, web push, chatbots, and a built-in CRM
- Mailbox MCP
Remote MCP server that connects an existing Gmail, Outlook, Microsoft 365 or IMAP mailbox to Claude, ChatGPT or any MCP client for reading, searching, sending and filing email.
- Calendly
Meeting scheduling software with AI scheduling, notetaking, and payment tools
- Knock
Customer engagement infrastructure for product, marketing, and transactional messaging
- HubSpot
Customer platform with marketing, sales, service, and CRM software
- Loops
Email platform for SaaS: marketing and transactional email from one product
- Nylas
Email, Calendar, Meeting Intelligence API & AI Agent Accounts
Side by side
| Product | Pricing | Free tier | API | MCP server | SDK | Open source |
|---|---|---|---|---|---|---|
| Close CRM | Freemium · from 9 | yes | yes | yes | — | no |
| Brevo | Freemium | yes | yes | yes | yes | no |
| SendPulse | Freemium · from $9.60/month (Standard plan, 500 subscribers, billed annually) | yes | yes | yes | — | no |
| Mailbox MCP | Freemium · from £2.92/month per mailbox (paid annually at £34.99 + VAT) | yes | yes | yes | — | no |
| Calendly | Freemium · from $10 | yes | yes | yes | — | no |
| Knock | Freemium · from $0 | yes | yes | yes | yes | no |
| HubSpot | Freemium | yes | yes | — | — | no |
| Loops | Freemium · from $0 | yes | yes | yes | yes | no |
| Nylas | Freemium · from $0/month (Free); Essentials $15/month; Pro $49/month ($43 annual); Enterprise custom | yes | yes | yes | yes | no |
Facts come from each product's own website, or from its verified owner when they have edited the listing. Each product page shows when it was last verified and how it was extracted. Similarity comes from the products' descriptions.
API
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