The best shared inbox for agencies in 2026: client communication software compared

The best shared inbox for an agency depends on whether client mail behaves like a request queue or like a set of ongoing accounts. For account-led agencies on Gmail or Outlook, Sektra keeps a record of what each client was promised. The other six fit narrower jobs, compared below with prices verified October 2026.

Sektra is our product. It sits in one section below, placed by the job it does, and the rest describes each tool from its own pages. The agencies page shows how Sektra is set up for client work.

What is the best client communication software for agencies?

Client communication software gathers the mail and messages a team exchanges with clients into one shared place, with an owner and notes on each conversation. For an agency, the deciding feature is whether the tool is organized by client or by ticket. The table compares the seven on that and on price.

How do you choose client communication software for an agency?

Start from how agency work moves. An account lead carries several clients at once. Requests, approvals, revisions and promises travel through email because that is where clients live. A dropped thread can undo months of work, so the tool has to answer for the account. Check each candidate against these needs:

• Organization by client, so opening an account shows what was promised, what is unanswered and who is involved.
• Commitment tracking, because agency trust rests on the revised deck arriving Thursday.
• Handoffs that carry context, because account teams change and clients notice when the new lead starts from zero.
• Low adoption cost, because freelancers and part-time staff will not learn a heavy system.
• The collaboration basics: assignment, mentions, internal notes and a signal when a colleague is already replying.

Each tool and the job it fits

Help Scout: a support desk with a knowledge base

Help Scout is a support platform with a shared inbox, a knowledge base, live chat and AI drafting. The free plan covers five users and 100 contacts a month. Standard is $25 per user per month billed annually, Plus $45 and Pro $75. AI Answers is $0.75 per resolution, verified October 2026.

Its unit is the conversation, which opens, gets answered and closes. Agency work rarely closes. Sektra keeps each client's open items on a record that outlives the thread.

Helply: an AI help desk from the team behind Groove

Helply grew out of Groove and describes itself as an AI-native support platform with a help desk, knowledge base and AI agents. It bills by credits with unlimited users, from $49 a month for 500 credits. The trial is 14 days with 1,000 credits, verified October 2026.

Its AI agents are built to answer support requests. An agency's clients expect their account lead, and Sektra keeps that person on every reply with the client's history beside it.

Hiver: a request queue in Gmail or Outlook

Hiver adds assignments, statuses, SLAs and analytics to Gmail through an extension, and its Omni web app covers Gmail and Outlook. Plans run $25 to $85 per user per month on annual billing, with SLAs and CSAT from Pro, verified October 2026.

For client mail that behaves like a service desk, such as production requests or media changes, it manages the queue. The long arc of an account is outside what it models. Sektra vs Hiver covers the line between them.

Gmelius: boards and automation in Gmail

Gmelius is a Gmail extension with shared inboxes, shared labels, kanban board views and automation rules. Shared inboxes start on Growth at $25 per user per month billed annually, verified October 2026. It lists no Outlook support, so an agency with staff on Outlook leaves them out.

The board shows where a thread stands. It keeps no record of what was promised to the client behind it, which is the record Sektra builds.

Front: routed operations for a shared services desk

Front is a customer operations app with routing rules, SLA policies, automations and analytics across teams and channels. Starter is $25 per seat for one channel type and ten seats, Professional $65 and Enterprise $105, verified October 2026. Copilot, its AI assistant, is a $20 per seat add-on below Enterprise.

It is scoped for large agencies with a shared services desk. A mid-size shop pays for a new app and a workflow someone has to design. Sektra vs Front shows Sektra's assignment and client record running with nothing to configure.

Missive: one app the whole agency moves into

Missive is a team email app that puts email, SMS, WhatsApp, social messages, team chat and tasks in one window. It connects Gmail, Outlook and IMAP accounts. Plans are $14 to $36 per user per month billed yearly, with five users on Starter and 50 on Productive, verified October 2026.

The value depends on full adoption, and agencies run on employees, freelancers and client-side collaborators. Front vs Missive weighs the two standalone apps tier by tier.

Sektra: for account-led agencies with named clients

Sektra is a separate workspace that syncs two-way with Gmail, Outlook including shared mailboxes, and IMAP, and connects a WhatsApp Business number through your provider. Gmail and Outlook connect through Google or Microsoft sign-in. Mail stays in place, so a freelancer who never opens Sektra still sends and receives as usual.

Everything is organized by client. Lens, the panel beside every thread, shows what you promised, what the client asked that is still open, who is involved and the next deadline. That record comes from the memory layer, which reads the history already in your mailboxes, so a new account lead starts briefed.

Before a status call, ask the assistant where the account stands and get an answer with links to the threads. Set a silence watch on a client and Sektra tells you the day they go quiet past the count you chose. The morning digest lists what you owe and who owes you a reply.

Assignment runs by rule or round robin, with notes, mentions and a typing indicator when a colleague is replying. Deep ticket workflow and SLA reporting are outside its scope. To see an agency Monday in it, book a demo and bring your messiest account.

Do agencies need a CRM or a shared inbox?

The shared inbox comes first, because client work happens in email and WhatsApp. A CRM holds what someone remembers to log, and logging is the first task dropped in a busy week. Sektra builds the client record from the mail itself, so it stays current with no data entry.

Agencies with a sales pipeline keep a CRM for deals. The inbox carries the delivery side: what each client asked for, what the team promised and what is overdue.

Which client communication tool should your agency pick?

• Pick Sektra if the agency is account-led and the costly misses are forgotten promises and clients who go quiet.
• Pick Hiver if client requests behave like a service desk with SLAs, run from Gmail or Outlook.
• Pick Missive if every employee and freelancer will move into one app with chat.
• Pick Front if a shared services desk routes requests across departments and someone owns the rules.
• Pick Gmelius for boards on shared Gmail inboxes, with nobody on Outlook.
• Pick Helply or Help Scout if the inbox is a support desk for many customers.

Run any trial on the Monday after a weekend of client email, because that morning shows whether the tool knows your clients.