# Stack > Stack is the CRM and marketing automation platform for small business. Contacts, pipelines, email and texting, websites, calendars and invoices live in one place for $97 a month with unlimited users. Stack is an all-in-one CRM and marketing automation platform for small businesses, run by Pirate & Fox LLC in Puerto Rico. One plan ($97/month or $1,000/year) includes unlimited users and contacts, the CRM and unified inbox, sales pipelines, email and SMS campaigns, workflow automations, websites and funnels, calendars and booking, estimates, invoices and e-signatures, a social planner, review management and reporting. Emails, texts and calls are billed at published usage rates. Every plan starts with a 14-day free trial. ## Pages - [Home](https://stackapp.co/index.md): what Stack is, the tools it replaces, and how it works - [Features](https://stackapp.co/features.md): every feature, grouped into nine modules, plus paid add-ons - [Pricing](https://stackapp.co/pricing.md): the flat plan, what's included, every usage rate and an example bill - [Contact](https://stackapp.co/contact.md): book a demo, phone, email and address ## Help center How to use Stack, section by section. Every article also has a Markdown version (add `.md` to its URL); the full list is in [llms-docs.txt](https://stackapp.co/llms-docs.txt). - [Getting started](https://stackapp.co/docs/getting-started/): Set up your account, your business profile and your team. - [Switching to Stack](https://stackapp.co/docs/switching-to-stack/): Step-by-step guides for moving your contacts, pages and automations from another tool. - [Contacts & CRM](https://stackapp.co/docs/contacts/): Your contact records, smart lists, custom fields, companies, custom objects and tasks. - [Conversations & phone](https://stackapp.co/docs/conversations/): The unified inbox, phone and calling, text messaging, email sending and WhatsApp. - [Pipelines](https://stackapp.co/docs/pipelines/): Track deals through your sales stages with opportunities and pipelines. - [Email & SMS marketing](https://stackapp.co/docs/marketing/): Build emails, send campaigns and manage your templates and brand. - [Automations](https://stackapp.co/docs/automations/): Build workflows, and look up every trigger and action. - [Sites & funnels](https://stackapp.co/docs/sites/): Websites, funnels, forms, surveys, blogs, online stores and the chat widget. - [Calendars](https://stackapp.co/docs/calendars/): Booking calendars, appointments, availability and calendar integrations. - [Payments & invoices](https://stackapp.co/docs/payments/): Invoices, estimates, payment links, subscriptions, taxes, and documents and contracts. - [Social planner & ads](https://stackapp.co/docs/social-ads/): Schedule social posts and run ads. - [Reviews & listings](https://stackapp.co/docs/reviews/): Request, monitor and reply to reviews, and manage your business listings. - [Reporting](https://stackapp.co/docs/reporting/): Dashboards, reports and attribution. - [Courses & communities](https://stackapp.co/docs/courses/): Courses, memberships, communities, certificates and the client portal. - [AI](https://stackapp.co/docs/ai/): Conversation AI, Voice AI, Content AI and AI in workflows. - [Affiliate manager](https://stackapp.co/docs/affiliates/): Run your own affiliate program with campaigns, commissions and payouts. - [Integrations](https://stackapp.co/docs/integrations/): Connect Facebook, Google, Stripe, Zapier and other tools. - [Mobile app](https://stackapp.co/docs/mobile-app/): Use Stack from your phone. - [Account & settings](https://stackapp.co/docs/account/): Account settings, users and permissions, and troubleshooting. ### Learn (playbooks and strategy) - [Automation playbooks](https://stackapp.co/learn/automation-playbooks/): Proven follow-up systems you can build in an afternoon. - [Industry setups](https://stackapp.co/learn/industry-setups/): How businesses like yours set up booking in Stack. - [Selling online](https://stackapp.co/learn/selling-online/): Order forms, upsells, webinars, courses and lead magnets. - [Getting found & reviews](https://stackapp.co/learn/getting-found/): SEO basics and building a reputation that brings in customers. - [Deliverability & compliance](https://stackapp.co/learn/deliverability/): Make sure your texts, emails and calls actually reach people. - [Working with AI](https://stackapp.co/learn/ai/): Get useful results from Stack's AI tools. ## Optional - [Full site text in one file](https://stackapp.co/llms-full.txt) - [Terms and conditions](https://stackapp.co/terms.md) - [Privacy policy](https://stackapp.co/privacy/) - [Affiliate program](https://stackapp.co/affiliate-registration/): earn up to 50% commission on referrals - [Customer login](https://my.stackapp.co)