Automation & workspaceUSClient letters from Outlook land in the CRM deal card, meetings from the Outlook calendar appear in the CRM, and replies go out from the manager's own address.
Outlook is the mailbox and calendar of most companies that run on Microsoft 365: letters, meetings, contacts and Teams calls all live there. The trouble starts when the CRM lives apart from it — a manager answers a client from Outlook, the deal card stays empty, and the meeting booked in the Outlook calendar never shows up in the pipeline. We connect Outlook to the client's CRM through the official Microsoft 365 interface: a letter from a known address goes into that contact's deal, a letter from an unknown address becomes a new lead, a reply written in the CRM goes out from the manager's own Outlook address in the same conversation, and a meeting created in the CRM appears in the Outlook calendar of the people invited. The connection works with the mailboxes whose owners granted access, or, by the decision of the company's administrator, with shared mailboxes without a signed-in person.
Before the website form writes to a shared Outlook mailbox; three people read it, each thinks a colleague took the letter, and the request waits for days.
After every letter from the form becomes a lead in the CRM with the sender's name, address and the text of the request, gets an owner by the CRM's rules, and the letter in Outlook is moved to the 'in CRM' folder.
Before the client replies to a manager's letter; the reply stays in that manager's Outlook, and the deal card in the CRM says nothing about it.
After a letter from a known address is attached to the deal of that contact, and the manager answers straight from the CRM — the letter goes out from his own Outlook address in the same conversation, so the client sees an ordinary reply.
Before the manager agrees a demo in the CRM, then creates the meeting in Outlook by hand, forgets to invite the engineer, and the client gets no invitation.
After the meeting created in the deal appears in the Outlook calendar of the manager, the engineer and the client with the link to the Teams call; if the date is moved in Outlook, the deal shows the new date.
Before a manager spends the morning answering the same questions about delivery, terms and documents.
After the assistant reads the incoming letter, pulls the deal data from the CRM and saves a reply as a draft in the manager's Outlook; the manager reads it, edits what he wants and presses Send. Nothing leaves the mailbox without a person.
For those who want to check: each point links to the official documentation page it comes from.
Outlook is the messaging hub of Microsoft 365: besides mail it holds contacts, meeting scheduling and information about people in the organisation — and one connection built through Microsoft's interface works with all of it.
Source: learn.microsoft.com ↗ checked 2026-09-28Microsoft lets an application put its own data, such as a deal number, into the hidden headers of a letter when creating or sending it — so a reply from the client can be matched to the deal without guessing.
Source: learn.microsoft.com ↗ checked 2026-09-28The Outlook calendar is available through the same interface, and Microsoft keeps it close to what a person sees: an application creates, changes and responds to meetings the same way a user does in Outlook.
Source: learn.microsoft.com ↗ checked 2026-09-28Microsoft 365 can notify the connected application itself when a letter or a meeting is created, changed or deleted — Microsoft offers this instead of checking the mailbox on a schedule.
Source: learn.microsoft.com ↗ checked 2026-09-28There are two kinds of access: on behalf of a signed-in employee, where the application sees only what that person sees, and on behalf of the company without a signed-in person — the second is granted by the administrator and Microsoft recommends the first whenever it is enough.
Source: learn.microsoft.com ↗ checked 2026-09-28Microsoft limits how many requests a connection may make to one mailbox in a ten-minute window and how many may run at the same time; when the limit is hit the request is refused and repeated after a pause, so bulk work such as importing an archive is done in small groups. The limit is counted per mailbox, so a busy mailbox does not slow down the others. The subscription to notifications about changes has a limited lifetime and must be renewed before it expires, and there is a cap on how many active subscriptions one mailbox may have across all applications; the connection renews its own subscriptions and keeps a scheduled check as a backup. Access on behalf of the company without a signed-in person is a privileged kind of access: it is granted only by the company's administrator and we ask for it only when a shared mailbox or a background task really needs it. Access on behalf of an employee never shows more than that employee could see in Outlook.
Three steps from a first message to work on your project.
Describe the task in the form — in text or by voice. Budget and timing are optional.
A developer studies the brief, asks about anything unclear and sends an estimate.
Once scope and price are agreed, the work begins.
or write to info@coreviaflow.space
Describe the task in text or a voice message. We look at your setup and reply with a plan.
Four services people come to us for most often. Each page explains what we do, how the work goes and where to start.
Choose the system, set up the pipeline, migrate data, train the team.
Learn more →Accounting, telephony, website, payments and messengers feed the CRM on their own.
Learn more →Orders, requests and answers around the clock, straight into your CRM.
Learn more →Flows between CRM, email, spreadsheets, payments and AI, on your own server.
Learn more →
CRMUAUkrainian CRM that pulls orders from your site, marketplaces and chat apps into one pipeline
See scenarios →
CRMUSUS CRM with built-in calling and no-code automation, ready to plug into the tools you already run
See scenarios →
CRMEUThe deal-focused CRM: connect it once, and deals, contacts and follow-ups keep themselves in sync
See scenarios →
Automation & workspaceUSA meeting booked in your CRM lands in the manager's Google Calendar with an invitation to the client — and a change in the calendar goes straight back to the CRM
See scenarios →
Automation & workspaceUSClient emails land in the CRM deal card, replies go out from the manager's own address, and the AI prepares a draft — without sending it.
See scenarios →
Automation & workspaceUSSlack as the team's alert desk: leads, deals and calls from the CRM land in a channel, and the team acts on them without leaving the chat
See scenarios →Implementation · Development · Integrations →
Outlook / Microsoft 365 is a trademark of its owner. CoreviaFlow is not affiliated with it unless stated otherwise. Screenshots are taken from public vendor materials; the source is shown under each one.
