Gmelius Review (2026): Gmail Collaboration and Automation

This Gmelius review focuses on the two things that actually separate it from a plain Gmail shared inbox: real automation rules and a kanban board that turns email threads into tracked cards. Most write-ups repeat the same shared-inbox-with-labels description you can already get from the vendor's own homepage, and stop there.

We checked every capability claim below against Gmelius's own site and feature pages in August 2026, and we describe packaging shape rather than quoting a price — rates move, and a page like this should still be accurate a year from now.

The short answer#

Gmelius is genuinely capable at the job it's built for: turning a Gmail inbox into a team workflow with automation rules, round-robin assignment, SLA tracking and a kanban board, all without leaving Gmail. That combination — real rule logic plus a visual board — is more than most Gmail-only competitors ship.

It differs from Hiver, its closest rival for this exact job, less in what each product lists on a features page and more in depth: Gmelius pushes further into workflow automation and kanban tracking, while Hiver has leaned toward omnichannel support. Neither replaces the other cleanly.

The honest caveat is architectural, not a feature gap: Gmelius runs as a browser extension inside Gmail's own interface, with a companion PWA and mobile apps rather than a standalone client. That shapes how it behaves under load and how far it can ever reach beyond Gmail.

Criteria that actually matter#

A generic 'is Gmelius good' answer isn't useful, because it depends on the job you're handing it. This review scores Gmelius on five things that actually decide whether it fits a Gmail-based team — not every feature its marketing page lists.

These five also happen to be where most Gmelius write-ups go thin, because they're the ones that require actually using the rule builder and the board rather than reading the pricing page.

• Automation rule depth — real if-this-then-that logic with routing, round-robin and SLA tracking, or auto-labelling dressed up as automation.
• Kanban-style workflow — whether turning a thread into a tracked card adds real visibility, or just a second place to look.
• Team analytics quality — response times and workload are table stakes; how far back the reporting window goes decides whether it survives a real management review.
• Extension stability — a Gmail collaboration tool runs inside Gmail's own interface, so it inherits every redesign Google ships, ready or not.
• Provider reach — 'Gmail collaboration' is also a boundary. If your team isn't fully on Google Workspace, this criterion decides the review before the others matter.

The scoring table#

Here is how Gmelius stacks up against Hiver, its closest rival for this exact job, on the five criteria above. Read the cells as descriptions of what ships where, not a score out of ten — neither vendor publishes one worth trusting, and we're not inventing one either.

Worked example: one email through a real Gmelius setup#

Feature lists don't show you what actually happens when a rule chain fires. Here's a support@ inbox tagged for billing, walked through the automation and the board behind it.

1. 1

   Email arrives at support@

   The AI tagging assistant reads the subject and body and applies a label — 'billing' — before anyone opens it.

2. 2

   The rule chain fires

   A matching automation rule round-robins the conversation to the next available billing agent and starts an SLA countdown, counted against the same account-level rule allowance as every other rule.

3. 3

   A card appears on the kanban board

   The conversation becomes a card in the 'New' column through the two-way, Trello-style sync, so the whole team sees it without opening the thread.

4. 4

   The agent works the card

   Replying inside Gmail moves the card to 'In progress' automatically; closing the thread moves it to 'Done' — the board reflects the inbox instead of duplicating it.

5. 5

   The SLA clock keeps running underneath

   If the reply doesn't land before the SLA threshold, the rule can escalate or notify — independent of whether anyone is looking at the board that minute.

6. 6

   The board slows down at scale

   On a board holding a few hundred open cards, the two-way sync becomes the noticeable lag point. Independent 2026 write-ups flag exactly this, and it's the mechanism at work, not a one-off bug.

Red flags to check before you roll it out#

Four things are easy to miss on Gmelius's own pricing and feature pages.

• The entry tier isn't this review. The solo AI tier (Meli) has no shared inbox, no automation rules and no kanban board — everything scored above starts at the next tier up.
• Outlook is a waitlist, not a feature. As of August 2026, Gmelius runs on Gmail and Google Workspace only; a mixed Microsoft 365 team gets none of this for half the company.
• The analytics window is short on the entry paid tier — three months, per Gmelius's own pricing page. Confirm which tier gets you a year of history before you build a reporting habit around it.
• The browser-extension model is the whole product, not an implementation detail. Every feature above runs inside Gmail's own interface, which means a Gmail redesign or a browser update can outrun a patch.
• CRM webhooks and custom roles sit above the tier most small teams start on, so the rule chain in the worked example above can't hand off to Salesforce or HubSpot until you're a tier higher.
• Rule executions and email conversations share one monthly allowance on the entry paid tier. A busy team running several rules per conversation can exhaust the rule allowance well before it exhausts the conversation count the tier advertises.

What we'd pick, and who should pick something else#

If you live entirely inside Gmail and want the deepest automation-plus-kanban workflow without ever leaving it, Gmelius is the more mature pick — full stop. The rule engine and the two-way kanban sync are a real, earned strength, and nothing in this review changes that.

Where it runs out is the team that isn't fully on Gmail, or the person whose actual problem is drowning in mail rather than needing a shared workflow board. Gmelius's automation rules route mail between people; they don't draft it, and they stop at the inbox door the moment part of the company is on Outlook.

That's a narrower gap than it sounds, because most small teams already have both problems at once: a shared address that needs routing, and individual inboxes nobody has time to triage. Gmelius solves the first one well. It has nothing to say about the second.

We build AI Emaily, a full email client rather than a Gmail extension, so it runs the same way across Gmail, Outlook and IMAP — no browser dependency, and no second product when someone on the team switches providers. The agent triages, drafts and closes loops under Copilot approval by default: nothing sends without you approving it, every action has undo and an audit trail, and its drafting voice comes from a Personal Context brain and per-client profiles you set — not from reading your sent mail. AI Emaily has no permanent free tier; it's a 7-day trial on Pro or Autopilot, card required, $0 if you cancel before day 7.

Our limit, stated the same way: we don't do round-robin assignment, SLA countdown rules or a kanban board, and we don't render inside Gmail's own interface the way Gmelius does. If a visual workflow board is the actual requirement, that's Gmelius's job to do well, not ours.