Collaboration· Revit 2021–2027 ·Full version 2.0.8 ·↓ Downloads 393

Messenger

Chats, requests, tasks, approvals and BIM context in one Revit workspace.

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WHAT'S NEW

RS.Messenger 2.0 — What's new

Version 2.0.0 · November 2026

The main change in version 2.0: correspondence is organized by company projects rather than individual models. A new AI tab searches conversations, tasks and approvals across every project. Consultant models are protected from editing. The Web tab is now a complete workspace for WhatsApp, email, Telemost and other services. Tasks and reminders have been redesigned for managers.

Highlights

What changed	What it delivers
Projects replace Models in Chats	View all project correspondence or messages for each model; the project list matches RS.CDE.
AI tab with data sources	Find how issues were handled before across company projects, without relying on employees' memories.
Similar-problem search without AI	Previous discussions can be found with approximate queries even without an AI subscription.
No writing to received models	Consultant models retain their original state with no disputed changes.
Web tab: groups, categories and dark theme	All work services in one window beside the model, without extra browser windows.
Tasks: Kanban, Calendar, Gantt and Details	Instructions from messages appear as assigned, time-bound work plans.
Reminders: schedule buttons and chat screenshot	Deadlines need not be memorised and reminder context is clear even weeks later.
Shared message priorities	All project participants can see what is important or urgent, not just the person who flagged it.

Company projects

Projects in Chats. The left side lists projects and their models. Selecting a project shows all its correspondence; selecting a model shows only model-related messages.
Projects are managed by RS.CDE. RS.Messenger neither creates nor searches for projects; it reads RS.CDE's register, so designers and BIM managers see the same list. Without RS.CDE, project lists are hidden, but Revit still shows discussions for open models and their links.
In-house and received models. RS.Messenger does not write to a model marked in RS.CDE as received from another organization. Save As produces an editable in-house copy.
Models outside projects can still store conversations inside the model itself, travelling with the file. When added to a project, their accumulated information is moved into the project database.

AI tab

A new top-level tab can be enabled in RS.Messenger settings. It is an AI chat, not a model agent, and does not modify Revit. With RS.MCP installed, the products share AI settings and conversations.

Each conversation offers four sources: Internet, RS.CDE.Server (server projects in which the user participates), RS.CDE (company project messages, tasks and approvals) and Personal chats (previous AI conversations on the computer). Unavailable sources are disabled.
Similar-problem search accepts natural-language questions. AI finds and reads discussions, then summarizes what was agreed, by whom and when, with references.
Without an AI subscription the tab provides conventional searches over the same data. No unsolicited suggestions appear.
Connect AI through the RS-Systems website without keys and pay from the website wallet, or use an Anthropic, OpenAI or compatible API key.
Privacy. AI conversations remain only on the user's computer, never on the server or in RS.CDE.

Web tab

Groups and categories. Connections are organized as Work, Personal and custom groups, under Email, WhatsApp, Telegram and custom categories such as Bitrix24 or Telemost. A new category may be added to all groups at once.
Drag and drop connections between categories and positions, and reorder categories themselves.
Add multiple accounts for one service, each under its own name.
Dark theme for all pages darkens email, WhatsApp, Telegram Web and other light pages; bright image previews are also subdued.
Sound can be disabled separately for each connection.
Custom icon and start page per connection; Yandex ID sign-in for Telemost works inside RS.Messenger.
Priority and unread items. Services with new messages move upwards; disconnected accounts appear grayed out.

Tasks and reminders

One list includes Tasks and Reminders, without Favorites. A deadline filter is placed below the list heading.
Views: drag-and-drop Kanban, Calendar, Gantt and Details, which opens the complete task card and its discussion. Choosing a task in Calendar navigates to its date.
Reminder schedules use buttons: in one hour, twice daily (09:00 and 15:00), daily at 09:00 (missed reminders appear on startup), weekly or monthly.
A screenshot of the chat is saved beneath the reminder and can be opened full-size.
Reminders can be created from Telegram and WhatsApp; reminders from Telegram Web can reopen the exact source message.
The reminder popup appears in the bottom-right corner, with buttons on one line and Edit available directly in the window.

Chats and Telegram

Shared message priorities include Urgent, Important, Critical, Awaiting Reply and a common deadline. All participants see them through RS.CDE Server, while users keep separate personal priorities.
The Chats board offers Kanban, Calendar and Gantt views of flagged messages.
Telegram displays all message types. Service events appear as gray rows, as in Telegram. Multiple accounts, folders and drag-to-pin chats are supported.
Chats, Tasks and Approvals pages now use consistent sections, with source checkboxes in their headings. Each tab remembers its section states.

Window and usability

The default window occupies the left half of the screen. After moving or resizing, its position is remembered and dialogs open on the same monitor.
Interface scaling is available, including Web and AI page scaling.
Interface language is selected in program settings.
Unread counts use circular badges on tabs and lists.
RS.Messenger windows no longer create extra Windows taskbar buttons.

Data and reliability

No projects, no folders. RS.Messenger creates no data folders until there are projects or users.
Company data (users, roles and non-project chats, tasks and approvals) stays in RS.CDE\Users on the project drive. Personal data stays in RS.CDE\Users\<login>; project data stays in the project's RS.CDE subfolder.
Temporary items, including queued deferred writes and buffers for non-project models, stay in the Windows temp folder, never on the working drive.
Important data is never stored on the system drive.
Network traffic passes through a separate RS.Messenger process, so firewalled Revit does not block email or Telegram.

For IT and administrators

Network processes. Telegram, email and web services use RS.Messenger.Host.exe, not Revit.exe; only the host process needs a firewall exception.
One Telegram session is shared by all Revit versions on the computer and the standalone RS.Messenger application.
Storage: project data in the project's RS.CDE folder; company and personal data in RS.CDE\Users on the project drive; temporary items in the Windows temp folder. No important data on the system drive.
AI conversations are stored only on the user's computer.
One RS.Messenger process per user. The instance embedded within RS.CDE runs separately and does not affect its stability.

Fixes and improvements

The startup error “Could not load Newtonsoft.Json” has been fixed.
The Web tab error “Unable to open page … 0x8007139F” has been fixed. Connections start sequentially without interfering with each other.
Maximised windows no longer clip at the top; window controls remain visible at all widths.
Telegram now displays calls and other service events instead of “Message type not yet supported”.
The reminder window opens precisely in the lower-right corner, and the main window retains its resized dimensions.
Similar-problem search is faster: the index remains in memory, so files are not reread for each query.
Unread counters within lists are now circular badges, matching those on tabs.

New possibilities

Project-based rather than file-based conversations

Previously discussions were linked to individual models, and managers had to open each model separately to see all project messages. Now the project is the main unit: the whole conversation can be viewed together, with model-specific threads inside it.

Answer “How was this solved before?” in minutes

Lead engineers and architects can spend hours searching for past decisions and calling colleagues who may remember. The AI tab finds related discussions across company projects and summarizes decisions. Conventional search remains available without AI.

A workspace without extra windows

Email, WhatsApp, Telemost, Bitrix24 and other services open in the Web tab beside the model, with groups, custom categories and a dark theme. Employees do not need a separate browser with dozens of tabs, and can create tasks or reminders from any message.

Assignments visible to management

Tasks originating from messages are visible in Kanban, Calendar and Gantt with assignees and deadlines. Shared message priorities show the whole team what is urgent and what awaits a response.

Version 2.0 benefits by role

Role	What changes
Project manager	All project correspondence, tasks in Kanban, Calendar and Gantt, shared priorities and a standalone program without Revit.
Lead project engineer	Search earlier technical decisions across projects; consultant questions are linked to model and view.
Lead project architect	Approvals with decision history; screenshot reminders for client comments; email and Telemost beside the model.
BIM manager	Project and model ownership from RS.CDE, protected external models and no important data on the system drive.
Designer	All channels in one window, tasks and reminders from any message and dark mode across web pages.

Important points when upgrading

Writing to consultant models is no longer allowed. When RS.CDE identifies a model as received, RS.Messenger does not save data into it; discussions belong in the project chat.
Projects come exclusively from RS.CDE. If RS.CDE is not used, Chats continues to show conversations for open models as before.
The AI tab is disabled by default. Enable it in RS.Messenger settings; AI answers require a subscription through RS-Systems or an organization key.
Personal data location: notes, reminders and personal tasks now reside in RS.CDE\Users\<login> on the project drive and are migrated automatically on first run.
The interface language setting has moved from the window header into program settings.

How to upgrade to version 2.0

Update RS.Messenger on Revit workstations and the standalone application used by managers.
Update the BIM manager's RS.CDE so projects appear in Chats.
Enable the AI tab and connect AI if required.
Organize Web connections into Work and Personal groups.

Compatibility

Revit 2021–2027 and standalone Windows program. Data from previous releases is migrated automatically on first launch.

DESCRIPTION

RS.Messenger — solution overview for project managers and BIM managers

RS.Messenger is a project communication workspace inside Revit 2021–2027 and in a separate Windows application. Model discussions, tasks, approvals, reminders, Telegram, email, WhatsApp and web services share one window beside the model. Every discussion is linked to a project and model, so decisions can still be found years later.

Managers get an organized flow of issues and assignments rather than scattered chats. Designers no longer switch between five programs to find where the lead project engineer answered a detail question.

Problems it solves

Project communication is scattered between Telegram, WhatsApp, email and verbal agreements. Context is lost: the relevant model or view is unclear. Assignments are forgotten and decisions made six months ago have to be made again.

Problem	Consequence	How RS.Messenger helps
Discussions are scattered across services	The lead engineer replies in Telegram, the client's comment is in email and the consultant's agreement is in WhatsApp; nobody can find everything.	Telegram, email, WhatsApp, Telegram Web, Telemost, Bitrix24 and other services appear in one window, grouped as work or personal.
Messages have no model context	“Look at the wall on the third floor” — which wall, in which model or view?	Project and model chats link messages to elements and views, which open directly in the model.
Instructions from messages are forgotten	A chat instruction goes uncompleted, the deadline passes and responsibility is unclear.	Create a task from any message with assignee, deadline, priority and discussion, displayed in Kanban, Calendar and Gantt.
Approvals happen verbally	One thing is approved but another is issued, with no proof of who authorized it.	Requests for model elements and views follow an approval route, require reasons for rejection and retain full history.
No reminders	Consultant replies, comment reviews and control dates rely on memory.	Reminders from any message or chat, with a screenshot and convenient recurrence choices.
Previous decisions disappear	Teams solve the same problem anew on each project.	Search similar problems and decisions in project correspondence, tasks and approvals, optionally with AI.
External models are modified	Editing a consultant model compromises delivery and creates disputes.	Project and model ownership come from RS.CDE, and received models are never written to.
Management does not use Revit	Managers require Revit or an assistant to answer model-related questions.	Standalone RS.Messenger offers the same chats, tasks and approvals without Revit, with Show in Model for running Revit instances.

Conversations beside the model

Chats are organized by project. The Chats tab shows company projects and their models. Select a model to view its discussion, or a project to see all project correspondence. RS.Messenger obtains the project list from RS.CDE, so it matches the BIM manager's register.

Messages with model context. Attach selected elements and a view to a message; the recipient can open them in their model with one click.
Screenshots and files. Paste a screenshot from the clipboard or attach files to messages.
Message priority. Important items can be flagged so they are not lost in conversation. The priority is visible to all project members through RS.CDE Server.
Models outside projects. Discussion can still be stored inside the model itself and travel with the file.
Special chats. Notes holds private notes, forwarded messages, files and links. With Me collects messages by, to or about a user, including replies and mentions in project and Telegram conversations.

All channels in one window

Telegram is a full client inside Revit with multiple accounts, folders, pinned chats, all message types, screenshots and file uploads. A Telegram chat can be linked to a project and model, making a copy visible to project participants.
Email supports up to ten mailboxes. Users can sign in with username and password while mail servers are detected automatically, including mailboxes on custom domains.
The Web tab hosts WhatsApp, Telegram Web, email services, Yandex Telemost, Bitrix24 and any other websites. Connections are organized into Work, Personal and custom groups and categories, reordered by drag and drop. Multiple accounts can be named independently, muted and shown with a darkened color scheme.

Network connections use a separate RS.Messenger process, not Revit.exe. Messages continue working when Revit is blocked by the firewall.

Tasks and reminders

Create a task from any message, including Telegram or email, using the right-click Create Task command. The task's original discussion remains attached and opens from its card.
Task views include List, drag-and-drop Kanban, Calendar, Gantt chart and a Details view with the complete task card.
Reminders can be created from any message or chat. Choose schedules using buttons: in an hour, twice daily, daily at 09:00, weekly or monthly. A screenshot of the chat is saved beneath the reminder so its context remains clear a week later. A reminder from Telegram Web opens the exact original message.
One consolidated table shows tasks and reminders from model chats, Telegram, email and web services, with filtering by source.

Approvals

An author submits model elements or views for approval. The request follows a defined route of approvers. Each person selects Approved or Rejected; rejection requires a reason. A snapshot of the approved state is kept. Changes made afterwards are detected and require renewed approval. The full decision history records who decided what and when, together with their comments.

RS CDE Server provides web and mobile approvals to managers who do not use Revit. RS.Messenger presents the same requests to designers directly inside the model.

Searching previous decisions and using AI

The AI tab combines an AI chat with searching project information. Each conversation has selectable sources:

Internet — online retrieval through the AI provider;
RS.CDE.Server — server projects in which the user participates;
RS.CDE — company project messages, tasks and approvals;
Personal chats — earlier AI conversations stored on this computer.

Ask naturally: “How did previous projects resolve ducts crossing beams?” AI finds full discussions and summarizes what was agreed, by whom and when. Conventional search is available without an AI subscription, and no suggestions appear unless requested.

AI conversations remain on the user's computer and are never sent to the server or RS.CDE. When RS.MCP is installed, both products share conversations and AI settings, while RS.MCP provides the model agent.

Standalone application without Revit

RS.Messenger also runs as an independent Windows program. Managers, lead project engineers and architects can access the same chats, tasks, approvals, Telegram, email and Web services without Revit. Show in Model opens selected elements in an already running Revit instance. Within RS.CDE, the program is embedded as a right-hand panel showing the selected project or model's conversation.

Data storage locations

Project data stays in the project's RS.CDE folder on the company network drive.
Company data outside specific projects (users, roles, general chats, tasks and approvals) stays in RS.CDE\Users on a project drive.
Personal information (notes, reminders and personal tasks) stays in the user's own folder there.
A model outside any project stores its discussion inside the model.
Temporary data is kept only in the Windows temporary folder.

No projects, no folders. The solution works on the company network without internet access. Internet is needed only for Telegram, email, web services, AI and RS.CDE Server.

How it works in practice

Scenario 1. A consultant's model question

A structural engineer notices that an opening in a slab does not match the HVAC shaft. They select the slab and shaft, write in the structural model chat “The opening is 200 mm off the shaft; who should move it?” and attach a view.
The HVAC engineer opens the message and the elements are selected in their own model, with the associated view shown.
The team agrees HVAC will move it. A task is created from the message with an assignee, a Friday deadline and Important priority.
The project manager sees the task on the board and Gantt chart; on Friday the assignee receives a reminder.

Result: the question is resolved in model context in minutes, the instruction is not lost and the discussion is searchable a year later.

Scenario 2. A client's comment arrives by email

The client's email is opened in the RS.Messenger Chats tab without leaving Revit.
Right-click it to Create Task for the lead architect or set a reminder with the response date.
The response is prepared in the model while internal discussion continues in the project chat beside the email.

Result: external correspondence and internal work stay aligned, with response deadlines under control.

Scenario 3. Approval of a construction detail

The architect submits a façade junction detail view and its related elements for approval.
The request follows the approval route: team leader → lead architect → lead engineer. Each approver records a decision; a rejection must include a reason.
The detail is modified a week later. The request reflects the change and must be approved again.

Result: only approved information goes to construction, and decision history is always available.

Benefits by role

Project manager

Task: keep deadlines and know who was assigned what and what was completed. Benefit: instructions become tasks with assignees and deadlines, while Calendar and Gantt show workload. The standalone program needs no Revit.

Lead project engineer and architect

Task: answer technical questions quickly and retain decisions. Benefit: questions link to model and view, approvals retain history and earlier decisions are searchable.

BIM manager

Task: orderly model communication and consultant model protection. Benefit: project and model chats follow the RS.CDE register, received models are protected, and BIM issues flow through one channel.

Designers

Benefit: one window beside the model replaces five applications, with tasks and reminders created from any message and responses linked to elements.

Getting started

Install RS.Messenger on Revit workstations and its standalone Windows application for managers who do not use Revit.
If RS.CDE is used, its projects appear in Chats automatically. Otherwise correspondence is available for open models.
Each employee connects their Telegram, email and web services in the Web tab, usually within minutes.
Agree team rules: model issues in model chats, assignments as tasks, and control dates as reminders.
To enable AI search, turn on the AI tab in Settings and connect AI through RS-Systems or a company API key.

Management questions

Will this be yet another messenger that nobody reads? No. RS.Messenger does not replace Telegram, email or WhatsApp; it gathers them in a single window beside the model. Staff use familiar channels while project conversations gain model context.

Where is correspondence stored and who sees it? Project discussions stay in the project folder on your server and are available to project members. Personal notes and reminders are private. AI conversations remain on the user's computer.

Can we work with clients and consultants from other organizations? Yes. External Telegram, email and WhatsApp work normally. RS CDE Server provides a common cross-organization space over the internet with a web portal and mobile app.

What if internet access is interrupted? Internal project messages, tasks and approvals continue on the company's network. Only external services and AI are unavailable.

Compatibility

Revit 2021–2027 and standalone Windows application. Automatic, Light, Dark and RS-Systems themes match Revit; in Automatic mode the theme follows Revit. The interface supports more than 20 languages.