# JustSendIt > Use Claude with Gmail, Outlook, LinkedIn, WhatsApp and calendars through one custom connector. JustSendIt is an MCP (Model Context Protocol) server. It lets Claude search email, read and send messages, work with calendars, research LinkedIn, publish posts and handle WhatsApp conversations and groups from connected accounts. ## Start here - [Connect JustSendIt to Claude](https://www.justsendit.ai/connect/justsendit-to-claude): Add the custom connector and choose the accounts Claude can use. - [Claude workflows](https://www.justsendit.ai/claude): Browse practical systems for email, LinkedIn, WhatsApp and calendar work. - [MCP tool reference](https://www.justsendit.ai/docs): Browse every JustSendIt tool by job. ## Claude guides - [All Claude guides](https://www.justsendit.ai/claude): Connect Claude to email, LinkedIn, WhatsApp and calendars, with Notion or Obsidian for context and planning. ### Connectors - [Choose a Claude connector](https://www.justsendit.ai/connectors): Compare Claude connectors for Gmail, Outlook, LinkedIn and WhatsApp by the work each one helps you finish. - [Use Gmail with Claude through JustSendIt](https://www.justsendit.ai/connectors/claude-gmail): Connect Gmail to Claude, search email, write replies and use Google Calendar in practical personal and business workflows. - [Use Outlook with Claude through JustSendIt](https://www.justsendit.ai/connectors/claude-outlook): Connect Outlook to Claude to find email, write responses and use Outlook Calendar in practical work and personal systems. - [Use LinkedIn with Claude through JustSendIt](https://www.justsendit.ai/connectors/claude-linkedin): Connect LinkedIn to Claude for conversations, professional research, content planning, posting and recruiting workflows. - [Use WhatsApp with Claude through JustSendIt](https://www.justsendit.ai/connectors/claude-whatsapp): Connect WhatsApp to Claude to catch up, write replies and organise client, customer and group conversations. ### Setup guides - [Claude setup guides](https://www.justsendit.ai/connect): Connect JustSendIt to Claude, then add Gmail, Outlook, LinkedIn or WhatsApp. - [Connect JustSendIt to Claude](https://www.justsendit.ai/connect/justsendit-to-claude): Add JustSendIt once as a custom connector, then choose the accounts Claude can use. - [Connect Claude to Gmail](https://www.justsendit.ai/connect/claude-to-gmail): Connect Gmail and its Google Calendar. - [Connect Claude to Outlook](https://www.justsendit.ai/connect/claude-to-outlook): Connect Outlook email and Outlook Calendar. - [Connect Claude to LinkedIn](https://www.justsendit.ai/connect/claude-to-linkedin): Connect LinkedIn for relationships, content, research, or hiring. - [Connect Claude to WhatsApp](https://www.justsendit.ai/connect/claude-to-whatsapp): Connect WhatsApp for chats, groups, and customer conversations. ### Capabilities - [What JustSendIt can do](https://www.justsendit.ai/capabilities): Plain capability lists for Gmail, Outlook, calendars, LinkedIn and WhatsApp through the Claude connector. - [Gmail and Google Calendar capabilities for Claude](https://www.justsendit.ai/mcp/gmail): See the Gmail email and Google Calendar actions available to Claude through the JustSendIt custom connector. - [Outlook and Outlook Calendar capabilities for Claude](https://www.justsendit.ai/mcp/outlook): See the Outlook email and Outlook Calendar actions available to Claude through the JustSendIt custom connector. - [LinkedIn capabilities for Claude](https://www.justsendit.ai/mcp/linkedin): See LinkedIn messages, profiles, search, post, invitation and recruiting actions available through JustSendIt. - [WhatsApp capabilities for Claude](https://www.justsendit.ai/mcp/whatsapp): See the WhatsApp chats, groups, messages, attachments and chat-management actions available through JustSendIt. ### Use cases - [Claude workflows you can copy](https://www.justsendit.ai/use-cases): Practical Claude systems for client email, LinkedIn, WhatsApp, meetings, market research and calendar planning. - [Search Gmail with Claude and find the source](https://www.justsendit.ai/use-cases/search-gmail-with-claude): Use Claude to search Gmail by sender, topic or date, open the right message and turn the result into a useful next step. - [Use multiple Gmail accounts with Claude](https://www.justsendit.ai/use-cases/claude-multiple-gmail-accounts): Connect multiple Gmail accounts to Claude, name the intended inbox clearly and keep work and personal context separate. - [Answer client emails faster with Claude](https://www.justsendit.ai/use-cases/answer-client-emails-faster-with-claude): Build a Claude email routine that finds urgent client messages, drafts useful replies and keeps promised follow-ups visible. - [Build a LinkedIn content system with AI](https://www.justsendit.ai/use-cases/linkedin-content-system-with-claude): Use Claude to learn from authorised LinkedIn activity, plan four weeks of content and publish with JustSendIt. - [Turn meeting notes into calendar follow-ups](https://www.justsendit.ai/use-cases/meeting-notes-to-calendar-follow-ups): Extract owners, deadlines and next actions from meeting notes, then create follow-up blocks in Google or Outlook Calendar. - [Run market research across LinkedIn, email, and Notion](https://www.justsendit.ai/use-cases/market-research-email-linkedin-notion): Build a small-batch market research system across LinkedIn and email, with Claude and JustSendIt keeping Notion organised. - [Use WhatsApp for business without losing your evenings](https://www.justsendit.ai/use-cases/whatsapp-for-business-with-claude): Build a calmer WhatsApp client-service system with Claude, clear response boundaries, better replies and Notion follow-ups. - [Plan and timebox your week with Claude](https://www.justsendit.ai/use-cases/plan-and-timebox-week-with-ai): Use Claude with Google or Outlook Calendar to protect deep work, communication, admin and personal commitments. ### Comparisons - [Choose the right channel or setup](https://www.justsendit.ai/compare): Compare communication channels and Claude connector setups by relationship, effort, maintenance and outcome. - [JustSendIt or Claude's built-in Gmail connector?](https://www.justsendit.ai/compare/justsendit-vs-claude-gmail-connector): Compare Claude's built-in Gmail connector with JustSendIt for one Google account, multiple Gmail accounts, and cross-channel work. - [LinkedIn research: JustSendIt or Apify?](https://www.justsendit.ai/compare/justsendit-vs-apify-linkedin-research): Compare connected-account research in Claude with Apify data collection by volume, setup, pricing model, and output. - [LinkedIn vs WhatsApp vs email: choose the channel](https://www.justsendit.ai/compare/linkedin-vs-whatsapp-vs-email): Compare LinkedIn, WhatsApp and email for outreach, customer engagement, support and success with a practical channel system. ## Product and support - [Security](https://www.justsendit.ai/security): How JustSendIt handles account access and message data. - [Support](https://www.justsendit.ai/support): Human support for billing, bugs and setup. ## Technical reference - [Full MCP tool list](https://www.justsendit.ai/llms-full.txt): Every tool name, grouped by capability.