> ## Documentation Index
> Fetch the complete documentation index at: https://docs.guhan.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Connect email

> Add Gmail or Outlook as a sender.

Adding email unlocks another 100 daily sends per sender and gives you an inbox-native channel. Reply threading is native — replies land back in your Gmail / Outlook the way they always do, plus in Guhan's Inbox.

## Supported providers

* **Google Workspace** — @yourcompany.com hosted on Google
* **Personal Gmail** — @gmail.com addresses
* **Microsoft 365** — @yourcompany.com hosted on Microsoft
* **Personal Outlook / Hotmail** — @outlook.com, @hotmail.com

## Steps

<Steps>
  <Step title="Go to Settings → Sender accounts">
    Sidebar → Settings → Sender accounts.
  </Step>

  <Step title="Click + Connect">
    Top-right. Choose **Google (Gmail)** or **Microsoft (Outlook)**.
  </Step>

  <Step title="Sign in on the provider's page">
    Google or Microsoft OAuth screen — sign in with the email account.
  </Step>

  <Step title="Allow requested scopes">
    Guhan needs:

    * **Send email as you** — for outbound
    * **Read email threads** — for reply capture
    * **Calendar read + write** (if you connect this as your calendar too)

    Approve to continue.
  </Step>

  <Step title="Confirm the sender appears">
    You'll be redirected back. Your email sender shows with an **Active** dot.
  </Step>
</Steps>

## What Guhan sees

Guhan reads:

* Emails matching outbound threads (to detect replies)
* Calendar availability (if calendar scope granted)

Guhan does NOT read:

* Unrelated inbox threads
* Your archive
* Attachments not tied to Guhan-sent messages

## What Guhan sends as

Every email goes out with:

* **From** — your name + your email address
* **Reply-to** — same address (replies come back to your inbox)
* **BCC** — none. Every email is a real 1:1 thread.

No mailing-list headers. No "unsubscribe" footer added by Guhan (you add it in Brand & Voice if you want one).

## Email vs. LinkedIn

Trade-offs:

|                           | LinkedIn             | Email                                                              |
| ------------------------- | -------------------- | ------------------------------------------------------------------ |
| Daily volume              | 25 invites + 30 DMs  | \~500 sends                                                        |
| Reply rate                | Typically higher     | Typically lower (depends heavily on your list quality and message) |
| Requires connection first | Yes (invite step)    | No                                                                 |
| Deliverability            | Almost 100% (in-app) | Depends on your domain reputation                                  |
| Reply feel                | Chat-like            | Email-formal                                                       |

Most workspaces use both — LinkedIn to initiate, email as a fallback channel a week later.

## Calendar integration

If you connect Google or Outlook as a sender, Guhan asks whether to ALSO use it as your calendar. Say yes → meeting bookings write directly to this calendar.

You can also connect a calendar without a sender (e.g., Cal.com booking URL). Details on [the Meetings concept page](/meetings/overview).

## Warm-up

Same 30-day ramp as LinkedIn:

* Day 1–7: 30% of daily cap (\~30 sends/day)
* Day 8–14: 50%
* ... etc.

Established senders (accounts > 30 days old + regular use) skip warm-up.

## What if the OAuth fails?

<AccordionGroup>
  <Accordion title="'Access denied' from Google">
    Some Google Workspace admins restrict third-party OAuth. Ask your admin to allow Guhan (unipile.com is the underlying OAuth partner).
  </Accordion>

  <Accordion title="Microsoft: 'AADSTS50011: The reply URL does not match'">
    Rare tenant-config issue. Contact [hello@guhan.ai](mailto:hello@guhan.ai) — we'll walk your admin through it.
  </Accordion>

  <Accordion title="'Consent required for additional scopes'">
    Some Workspace tenants require admin consent for calendar scopes. Get your admin to approve Guhan once; then any user can connect.
  </Accordion>
</AccordionGroup>

## Reauth

If you change your email password, Guhan gets locked out until you re-authorize.

* You'll see a **banner** at the top of the app: "Your Gmail account needs re-authentication"
* Click it OR go to Settings → Sender accounts → \[account] → **Reauth**
* One click through OAuth → back in business

In-flight email steps hold in place until reauth completes.

## Related

<CardGroup cols={2}>
  <Card title="Sender accounts" icon="paper-plane" href="/get-started/sender-accounts/overview">
    Full concept + safety details.
  </Card>

  <Card title="Meetings" icon="calendar" href="/meetings/overview">
    Calendar setup.
  </Card>
</CardGroup>