Connecting your mailbox (Gmail / Outlook)

Last updated: June 23, 2026

Connecting your mailbox lets Unify send sequence emails on your behalf, capture replies, and surface reply notifications in the right places. This article covers how to connect Gmail or Outlook, the daily send limits to know about, and what to do if things don't look right.

Gmail

The easiest path is right inside chat. Ask chat to do something that needs your mailbox — for example:

"Enroll these contacts in my 'Q3 outbound' sequence."

If your Gmail isn't connected yet, chat will prompt you to authorize it right there. Click through, sign in to Google, grant access, and chat continues.

Or, set it up before you start chatting:

  1. Go to Settings → Deliverability → Mailboxes.

  2. Click Add mailbox → Google.

  3. Sign in to Google and authorize Unify.

You'll see your mailbox appear in the list with its status, daily send limit, and warmup state.

Outlook (Microsoft 365)

Outlook works with Unify, but you connect it from Settings rather than from inside chat.

  1. Go to Settings → Deliverability → Mailboxes.

  2. Click Add mailbox → Microsoft.

  3. Sign in to Microsoft and authorize Unify.

Once connected, chat can use your Outlook mailbox the same way it uses a Gmail mailbox — enroll contacts, draft messages, pull replies into your inbox and into Unify.

We're working on bringing Outlook setup into the chat flow too.

Daily send limits

Each mailbox has a daily send cap of 25 emails per day to protect your sender reputation. You can see your usage on the mailbox details page at Settings → Deliverability → Mailboxes.

A few things to know:

  • The cap protects you. Sending too much volume from a single mailbox damages deliverability and gets future sends filtered as spam.

  • The daily limit applies to sequence sends, not your normal personal email. You can still send personal email from the same mailbox without affecting the cap.

  • Hitting the cap is okay. Contacts queued past the limit send the next day from where they left off.

  • Need to send more? Reach out to support — we'll help you figure out the right setup.

What permissions Unify asks for

When you connect Gmail or Outlook, Unify asks for the permissions it needs to send on your behalf and read replies. The OAuth screen shows exactly what's requested. You can revoke access at any time from your Google or Microsoft account settings — disconnecting from there will also disconnect the mailbox in Unify.

Disconnecting a mailbox

  1. Go to Settings → Deliverability → Mailboxes.

  2. Click the mailbox.

  3. Click Disconnect.

Disconnecting stops further sends from that mailbox. Sequences already enrolled to contacts on that mailbox pause until you either reconnect it or move them to a different mailbox.

Troubleshooting

"I connected but my mailbox shows disconnected." Reauthorize from Settings → Deliverability → Mailboxes. Google and Microsoft occasionally expire OAuth tokens — reauthorizing fixes it.

"My sends are stuck in queued." You've likely hit your daily send limit. Queued sends process when the limit resets, or you can raise the cap.

"Replies aren't showing up in my inbox." First, check that the mailbox forwarding settings in Unify match what you expect — see How are replies handled? in the Sequences collection.

"Outlook won't connect." Confirm the account is Microsoft 365 (work/school) or Outlook.com / Outlook.live.com. Personal Exchange-only accounts may not support the OAuth flow.