One simple setup keeps every inbox and workspace connected without constantly logging out, switching accounts, or losing the thread.
Search personal-gmail, work-gmail, agency-slack, and client-a-slack for the renewal thread. Label every source.
The renewal appears to be waiting on finance approval. Most recent source is client-a-slack, then work-gmail.
Start here so Composio has somewhere to manage the accounts you approve. You will use this same account whether you connect it to Claude, ChatGPT, or Codex.
https://login.composio.dev/sign-up
Open
Choose your app below. The setup is slightly different in each one.
Open Settings, go to Connectors, choose Add custom connector, and paste this URL. Name it "Multi Connector," then complete the Composio sign-in.
https://connect.composio.dev/mcp
Open Settings > Apps > Advanced settings and turn on Developer Mode. Choose Create app, paste the URL below, select OAuth, scan the tools, approve the Composio sign-in, and create the app. In a new chat, select Composio from the tools menu before using it.
https://connect.composio.dev/mcp
Paste this into a Codex task. Codex will add the MCP server and open the Composio authorization flow. You will still approve the OAuth screen yourself. When it is finished, start a new task so the Composio tools load.
Add the Composio MCP server globally using https://connect.composio.dev/mcp. Walk me through the OAuth login, then verify that Composio is enabled and authenticated. Do not connect Gmail or Slack yet.
Your AI should open browser approval links through Composio. Sign in with the account you want to connect, review the permissions, and approve only what you understand.
Use Composio to connect my Gmail and Slack accounts. Start with read/search use cases only.
If it says Gmail and Slack are already connected, that only means one of each is active. Ask for a fresh connection link for the next Gmail account or the next Slack workspace.
Using only Composio, help me add another Gmail account and another Slack workspace. Generate fresh OAuth connection links for each one. Do not reuse the Gmail or Slack connection that is already active.
Most Gmail addresses and Slack workspace names are already useful. Add simple labels only when you want a more natural way to refer to them, like personal email, main work email, or client Slack.
Using only Composio, list my connected Gmail accounts and Slack workspaces. Keep the existing email addresses and workspace names, but help me add friendly labels for any that are ambiguous, like personal email or client Slack.
Use Composio to search all connected Gmail accounts and Slack workspaces for “[topic/person/company]”. Return the most relevant results grouped by source. For each result, show the email address or Slack workspace, date, sender, and why it matters.
Use Composio to check my connected business Gmail accounts and Slack workspaces from the last 24 hours. Summarize only items that likely need my attention. Group by: urgent, waiting on me, useful context, and can ignore.
I have a call about [client/project] in 20 minutes. Use Composio to search connected Gmail and Slack sources for recent context. Give me a briefing with: latest decision, unresolved questions, people involved, and links or identifiers for the source messages.
Use Composio to search across connected Gmail and Slack for [topic]. Tell me which source appears most current and authoritative. Separate confirmed facts from guesses. If Gmail and Slack disagree, show the conflict clearly.
Use Composio to search my personal Gmail and business Gmail separately for “[topic]”. Keep the results in two sections. Do not mix personal and business context unless the same person or thread appears in both.
Use Composio to review the latest Gmail and Slack context about [topic], then draft a reply I could send from [email account]. Do not send it. Include the source messages you used so I can verify the draft.
Ask it to list the connected Gmail and Slack accounts it can see through Composio. If the second account is missing, connect it again and give it a clear alias.
Ask your AI to retry the connection. Composio approval links can expire, so a fresh link is usually enough.
Some Slack workspaces require an owner or admin to approve app installs. That is a workspace policy, not an AI-app issue.
Disconnect Composio in your AI app's settings and remove the connected account from Composio. You can also revoke Google and Slack access from their own security settings.
No. If you paste it into one chat, it guides that chat. For persistence, add it to that app's project or profile instructions when available. For real enforcement, keep risky connector tools set to needs approval or disabled.
Know someone juggling multiple Gmail inboxes or Slack workspaces? Send them this setup guide so their AI can search across the accounts they actually use.