New·AI triage and assisted identity merge — both in private beta

One inbox for every conversation a business has.

CommSync threads SMS, email, and every number you operate into one calm surface — so the lead you missed at 11 p.m. on a Tuesday isn’t the one that gets away. Built for the owner managing more relationships than Dunbar ever predicted.

Feature-rich email clientBring your own numberSet up in minutes
Built for the people who answer everyone, all the time
BrokeragesWedding plannersMed-spasProperty managersBoutique agenciesCustom-build shopsConcierge desksLitigation firmsWealth advisorsTour operatorsBrokeragesWedding plannersMed-spasProperty managersBoutique agenciesCustom-build shopsConcierge desksLitigation firmsWealth advisorsTour operators

By the thirtieth lead, you start losing them in the cracks.

Robin Dunbar gave us a number — somewhere between a hundred and fifty stable relationships before the human mind quietly stops tracking them. Modern owners blow past it before lunch on a Tuesday. A wedding planner is fielding messages from sixty couples. A broker is keeping eight escrows alive at once. A med-spa owner is on the receiving end of fifteen channels — texts, emails, Instagram replies, Google business chat, voicemail transcripts, an answering service overnight.

The tools were never the bottleneck. The fragmentation was. A reply lives in one inbox; the relationship lives across seven. The cost is not lost messages — it’s lost trust, lost referrals, lost momentum. The industry calls this “follow-up.” Owners call it the part of the day they don’t finish.

“The number of people I’m supposed to remember doubles every year. The number of inboxes I have to check hasn’t.”
— Founder, Haven Media Solutions. The reason this product exists.
The product

Every channel, one calm thread per person.

SMS through Skyetel, JustCall, anywhere else. Email over IMAP. The person on the other end is a person — CommSync stitches their channels together so you only owe them one reply.

commsync.gg/inbox
Identity merge

Same person, different number? CommSync notices.

Fuzzy-matches new identities against your contacts and writes a suggestion. You confirm. Nothing merges silently.

Provider-agnostic SMS

Skyetel, JustCall, more on the way.

Numbers route through one outbound interface. Adding a carrier doesn't touch your message pipeline.

MCP for agents

An API key, a Claude Desktop, your inbox.

A first-class MCP endpoint at /api/mcp lets external agents read and act with per-key scoping.

What it does

Six quiet things that compound into a different workday.

SMS · Can we lock the date?Email · attachedYes — invoice sent
Unified threads

SMS and email, side by side.

A single thread per person that doesn’t care which channel the message arrived on. Quote a phone text in an email reply; nobody loses the plot.

MRM92% MATCH
Identity merge

Assisted, never automatic.

Fuzzy-matched candidates land in a review queue with confidence scores. You confirm. The system never quietly stitches two people together.

AI
CommSync AI

Labels itself. Drafts replies.

Tags each thread the moment it lands. A daily digest summarises what slipped through and proposes responses you can send in one tap — every reply still goes through you.

SkyetelJustCallSMS
Provider-agnostic

Skyetel today, JustCall next.

A small adapter layer means swapping or adding an SMS carrier is a localised change. Your numbers stay portable; your inbox stays the same.

LIVE
Realtime

New messages land instantly.

Open a thread and replies arrive the moment the carrier signs them off — no refreshing, no polling tax, no thirty-second lag between you and the person on the other end.

/api/mcpClaude agent
MCP for agents

A first-class endpoint for Claude.

Issue an API key in Settings; point Claude Desktop or any MCP-aware agent at /api/mcp. Per-key scoping means you choose what an agent sees.

I went from twelve tabs and an anxiety to one window and an evening to myself.
Sasha Vance
Founder · Vance Atelier (Miami, Austin, Oslo)
3.2×
faster first-reply time
0
messages dropped between channels
people you can almost-remember
Open beta

Spend the evening somewhere else.

Bring your numbers, plug in your inbox, and watch the day’s follow-ups fall into a single quiet thread per person. Free to start. Set up in minutes.

No credit card. No drip campaign. We’ll show ourselves out.