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Connect Gmail to Outlook

Plenty of people run two mailboxes: a Google Workspace account for one business and Microsoft 365 for another, or a personal Gmail beside a work Outlook. Connecting the two lets one automation watch both inboxes and send from whichever address fits, so nothing falls between them.
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Ideas

What you can do with Gmail and Outlook

Thank-yous from the right mailbox, one triage across both inboxes, PDF summaries and deliverability checks. These are ready-made starting points. Anything else you can describe works too.
The moment it happens

Send thank-you emails from the right mailbox for each brand

New buyers get a thank-you from your Gmail or your Outlook, depending on which brand they bought from.

See how it works
Every 30 minutesAI

Triage your Gmail and Outlook inboxes with one digest

Both inboxes are sorted into the same categories, and you get one digest of the emails that need you.

See how it works
Every 15 minutesAI

Summarise PDF attachments arriving in Gmail or Outlook

When a PDF arrives in either your Gmail or your Outlook, you get an email with a short summary of what it says.

See how it works
Weekly

Check whether your emails land in the inbox at Gmail and Outlook

Every week a test email is sent each way between your Gmail and Outlook, and you learn whether it reached the inbox or spam and whether SPF, DKIM and DMARC passed.

See how it works Your own logic

Any other automation you can describe in words

Your own rules, schedule and AI steps with Gmail and Outlook, plus any other app. Describe it and your assistant builds it.

See how to build your own

Build your own

Build any Gmail and Outlook automation you can describe

The ideas above are ready-made starting points, not a fixed list. Describe what should happen between Gmail and Outlook in your own words, with your conditions, other apps or an AI step, and your assistant writes it, tests it and runs it on ClickRuntime.

  • Your own rules

    Conditions, thresholds, filters and exceptions, written the way you'd explain them to a colleague.

  • Any number of apps

    One automation can read from one app and update several others. Over 248 apps are ready, and anything with an API works too.

  • AI where it helps

    Summaries, classification, extraction and drafts use ClickRuntime's built-in AI, with no extra key.

  • On a schedule or on each event

    Runs as often as every 5 minutes, or the moment an app sends an event, and keeps track of what it already handled.

For example, ask your assistant

Every evening, send me one Gmail email with the unread Outlook messages from people I have emailed before, ignoring newsletters.

Forward emails from my Outlook work account to Gmail only if they mention an invoice or contract, with the attachments included.

Use cases

Why people connect Gmail and Outlook

How the two apps work together

  • The script checks Gmail for new messages every few minutes, and Outlook through Microsoft Graph, either via change notifications or checks every few minutes.
  • It can forward, copy or summarise messages from one account into the other.
  • It keeps a record of processed message IDs so the same email is not handled twice.

  • Freelancers manage a personal and a client mailbox

    Important emails from a client's Outlook account are forwarded or summarised into Gmail. One inbox is enough for the morning check.

  • Teams moving from Microsoft 365 to Google Workspace

    Contacts, labels and recent threads are mirrored during the switch. Nothing is missed while both accounts are live.

  • Managers get one digest for both accounts

    A single daily email lists the important unread messages from Gmail and Outlook with AI one-line summaries. Two inboxes are reviewed in one pass.

  • Support staff route emails to the right system

    Customer emails reaching the wrong mailbox are forwarded with the original sender and subject. Replies happen from the correct account.

More apps

Gmail, Outlook and other apps in one automation

An automation isn't limited to two apps. Add the next step in another app and it runs as part of the same automation.

Urgent mail from either inbox to Slack

When an email in either my Gmail or Outlook is marked urgent by AI, post the sender and a one-line summary to me in Slack.

Log emails from both accounts in a sheet

Add every email from my clients' domains in Gmail and Outlook to my Client Mail sheet with date, mailbox and subject.

Meeting requests from both inboxes to one calendar

When an email in Gmail or Outlook asks for a meeting, create a tentative event on my Google Calendar with the details.

Setup

Connect Gmail and Outlook once

Every idea on this page uses the same two connections, so you set them up once. If one is missing, your assistant tells you and links to the right place.

Gmail

Email

  1. At console.cloud.google.com, create a project and enable the Gmail API under APIs & Services → Library.
  2. Set up the OAuth consent screen. On Google Workspace choose Internal. On a personal Gmail account choose External, then under Audience click Publish app so it is In production, not Testing.
  3. Under Data Access, add the scopes you need, such as https://www.googleapis.com/auth/gmail.modify, or gmail.send if you only want to send.
  4. Under Clients, create an OAuth client of type Web application with the redirect URI https://clickruntime.com/oauth/callback.
  5. In the ClickRuntime dashboard, open Connections, choose Gmail and enter the client ID and secret. On a personal account Google shows an unverified-app screen: click Advanced, then go to your app.

Outlook

Email

  1. At entra.microsoft.com, go to Identity → Applications → App registrations → New registration. Choose single tenant for a work account, or any organisation plus personal accounts for Outlook.com, and add the Web redirect URI https://clickruntime.com/oauth/callback.
  2. Under Certificates & secrets, create a new client secret and copy its value straight away.
  3. Under API permissions, add Microsoft Graph delegated permissions Mail.ReadWrite, Mail.Send, offline_access and User.Read, then grant admin consent if your organisation requires it.
  4. In the ClickRuntime dashboard, open Connections, choose Outlook and enter the Tenant ID, Client ID and client secret.

FAQ

Questions about connecting Gmail and Outlook

Can it connect personal and work accounts?
Yes. Each mailbox is connected separately in your ClickRuntime dashboard, and you choose which one each step uses.
Will it move email between the two accounts?
Only if you ask it to. These automations label, summarise and report; your mail stays in its own mailbox.
Does my Microsoft 365 admin need to approve it?
Some organisations require admin approval before apps can read mail. If yours does, you'll see a request when you connect.
Which address do emails come from?
Whichever mailbox the automation is set to use for that step, such as Gmail for one brand and Outlook for another.
Does it delete emails from either account?
No, unless you ask for it. Forwarding or summarising leaves the original email where it is.
Can it keep labels and folders in sync?
It can apply a Gmail label or move an Outlook message to a folder based on rules you describe, but full two-way folder sync needs careful rules to avoid loops.
Which account sends the reply?
Whichever account you choose. The script can send from Gmail, from Outlook, or reply from the account that received the original.

Related pages

Keep exploring

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