Your AI assistant can only see one email account. Throughline gives it all of them — search across every Gmail you have from Claude, Perplexity, or any MCP client, every result labeled by source.
Read-only access · AES-256 encrypted · 2-minute setup
Personal, work, the side project, the client alias, the old domain you still get invoices on. Native AI email connectors bind to a single account — so every cross-inbox question falls back to you, switching tabs and copy-pasting.
[work], [personal] — so the answer is unambiguous.No install, no extension. Throughline is a hosted connector you point your AI client at — the same way you'd add any MCP server.
Log in with an email link, then connect each Gmail account through Google's own consent screen. Give each one a nickname.
Add Throughline as a custom connector in Claude, Perplexity, or any MCP client. It handles the OAuth handshake for you.
Ask in plain language. search_messages runs across account="all" and returns merged, source-tagged results.
One search hits every connected inbox in parallel and merges the results — no more asking the same question five times.
Each result carries the inbox it came from. The assistant — and you — always know whether it was the work or personal account.
Anything that speaks the Model Context Protocol works — Claude, Perplexity, Cursor, and whatever ships next. No lock-in.
Throughline requests Gmail's readonly scope only. It can search and read — it can never send, delete, or alter your mail.
Connect a new inbox in seconds; revoke one with a click. Your account list is yours to manage, always.
Gmail today. Calendar, Drive, Slack and Dropbox are on the roadmap — same multi-account model, same one connection.
Personal, company, and investor inboxes — ask across all three without leaving the chat.
A separate alias per client. Find that one thread no matter which engagement it landed in.
Managing several mailboxes on someone's behalf? Search them as one, keep them labeled apart.
Personal + work + that Gmail from 2009 that still gets your receipts. All searchable at once.
Every Gmail token is sealed with AES-256-GCM before it touches the database. The key lives in the host secret store, never in the code.
Your accounts are keyed to your identity and reachable only by you. A dedicated test proves no request can cross from one user to another.
Only Gmail's readonly scope is requested. No send, no delete, no drafts — the connector physically cannot modify your mail.
Message contents are never logged. Revoke any account instantly from your dashboard, or from your Google security settings.
No per-account fees, no seat math. Connect as many Gmail accounts as you want.
to get set up — then just $2/month to keep it running.
Throughline does one thing exceptionally well. It's a small, focused tool — priced like one, not like enterprise software you'll use 5% of.
Cancel anytime. Disconnecting your accounts revokes our access immediately.
No. Throughline is a hosted connector. You add it to your AI client (like adding any MCP server) by pointing at one URL — nothing to download, no browser extension.
Any client that supports the Model Context Protocol — Claude and Claude Desktop, Perplexity, Cursor, and a growing list of others. If it speaks MCP, it works.
It requests Gmail's read-only scope, so it can search and read messages but never send, delete, or change anything. Access tokens are encrypted with AES-256, message contents are never logged, and you can revoke any account instantly.
As many as you like — pricing doesn't change with account count. Each one gets a nickname so results stay clearly labeled.
Search across all your connected Gmail accounts and return merged, source-tagged results. More Gmail actions and new providers (Calendar, Drive, Slack, Dropbox) are on the roadmap.
Hosting, token security, and keeping the connector current as MCP clients and Google's APIs evolve. The one-time $9.99 covers onboarding.
Two minutes to connect. One search across all of it. Every answer labeled by source.
Working name “Throughline” — placeholder pending naming + domain/trademark check.