Here are proven tools that let teams pull email, chat, social, SMS/WhatsApp, voice, and other customer messages into a single shared/unified inbox — short description, standout capability, best-fit, and a source you can read for details:

• Front — Modern team inbox that combines email, chat, SMS, social & API channels into one team workspace; strong routing, automation and integrations. Best for teams that want a shared-mailbox UI + advanced workflows. (front.com)

• Zendesk (Zendesk Suite) — Enterprise-grade omnichannel support (email, chat, voice, social) with a unified ticketing workspace and extensive app/integration ecosystem. Best for larger support organizations needing scalability and reporting. (zendesk.com)

• Freshdesk / Freshdesk Omni (Freshworks) — Omnichannel agent workspace that unifies tickets, chat, email, phone and messaging with AI assistance (Freddy). Good mid-market choice for multichannel teams. (freshworks.com)

• Intercom (Inbox / Conversations) — Conversation-first inbox that merges live chat, email and messaging with strong automation and product-led support features. Best for product and sales-led teams (chat-first). (intercom.com)

• Help Scout — Simple, collaborative shared inbox with email/chat/phone/social support, internal notes, collision detection and customer profiles. Best for small-to-mid teams that want an easy-to-use shared email-first inbox. (helpscout.com)

• HubSpot (Conversations / Service Hub) — Unified “Conversations” inbox that brings website chat, email, social and custom channels into HubSpot CRM for a single view. Best when you want inbox + CRM data tightly integrated. (knowledge.hubspot.com)

• Salesforce Service Cloud (Service Console + Omni‑Channel) — Full contact‑center & agent console that routes and surfaces cases from many channels into one agent workspace; ideal for enterprises with Salesforce CRM. (salesforce.com)

• Gorgias — Ecommerce-focused helpdesk that centralizes email, chat, phone and messaging (including Shopify integrations) into one inbox; strong for online stores. (gorgias.com)

• Gladly — “Lifelong conversation” single-threaded inbox (all channels in one timeline) focused on personalized, omnichannel CX — popular with retail/consumer brands. (gladly.ai)

• Zoho Desk / Zoho TeamInbox — Unified omnichannel inbox (email, telephony, IM, social, chat) with strong value and integrations across Zoho apps. Good cost-effective option for growing teams. (zoho.com)

• Hiver — Gmail/Outlook-native shared inbox that turns team mailboxes into a helpdesk (assignments, collision detection, shared drafts, WhatsApp/chat integrations). Best if your team lives in Gmail/Workspace. (start.hiverhq.com)

• Helpwise — Simple shared inbox for email + WhatsApp + other messaging channels with easy setup and shared-team workflows. Good if you want a straightforward shared inbox with WhatsApp. (helpwise.io)

Quick selection checklist (pick what matters most)

• Channels: confirm required channels (WhatsApp/Meta Messenger, Instagram DMs, SMS, voice) — not every product supports every channel natively.
• Scale & compliance: enterprise scale, SLAs, HIPAA or SOC requirements push toward Zendesk, Salesforce, Freshdesk or Gladly.
• CRM / data: if you need tight CRM integration, prefer HubSpot or Salesforce.
• Interface preference: Gmail-first teams → Hiver/Helpwise; chat-first/product teams → Intercom; email-first collaborative teams → Help Scout or Front.
• Budget & complexity: smaller teams = Help Scout, Hiver, Helpwise; mid-to-large = Freshdesk, Zendesk, Salesforce.

If you want, I can:

• narrow these to the top 3 that match your company size, channels and budget, or
• make a one-page comparison (channels supported, best plans, notable integrations) for 4–6 finalists.

Which would you prefer?