Connect Gmail to Nynch

Updated May 2026

You'll learn how to: Connect your Gmail account so Nynch can sync your email threads, log conversations against contacts automatically, and send replies from inside Nynch.

Time: 3 minutes, including the consent screen.

Prereqs: A Gmail or Google Workspace account. Either personal or business works. If your IT team locks down third-party app access on your Workspace, you'll need them to allow Nynch first.

Where the connection lives

In the left sidebar, click the gear icon in the bottom-left for Settings. Click the Email & Calendar tab.

The first panel is titled Email & Calendar Integrations and contains four cards in this order:

Gmail (envelope icon).
Google Calendar (calendar icon).
Outlook (envelope icon).
Outlook Calendar (calendar icon).

This article walks Gmail. Calendar lives at Connect Google Calendar. Outlook is the same flow with a different consent screen.

Step 1: Click Connect on the Gmail card

The Gmail card description reads: "Sync your Gmail messages and contacts. Email data is used to automatically enrich contact information by analyzing email signatures."

On the right side of the card, click Connect.

The button changes to a spinner while Nynch builds the OAuth URL. After a beat your browser navigates to Google's sign-in screen.

Step 2: Pick a Google account

If you're already signed in to one Google account, click your account avatar. If you're signed into multiple, pick the account you want Nynch to read.

If you're not signed in, sign in first.

Step 3: Approve the permissions

Google shows a permissions screen titled "Nynch wants to access your Google Account". The exact permissions Nynch requests:

View your email messages and settings. Lets Nynch read message metadata (who, when, subject, thread) and message bodies for display in the Nynch inbox and contact timelines.
Send email on your behalf. Lets you compose and reply to messages from inside Nynch. Nothing is ever sent without you clicking Send.
View and edit labels. Lets Nynch read Gmail labels for filtering, and apply Nynch-specific labels when you ask it to.

What Nynch does with these permissions in practice:

Reads your inbox in the background to surface emails on the Today screen's Emails section and on each contact's timeline.
Reuses your email signatures and prior message style to draft Reply Coach suggestions.
Sends replies only when you compose and send them from the Nynch inbox or from inline composers.

What Nynch does NOT do:

It does not bulk-export every email body to long-term storage. Email content is fetched on demand and short-cached.
It does not send any email without an explicit Send action from you.
It does not modify your Gmail labels or settings without your action.
It does not share your emails with other Nynch users in your workspace.

Click Allow at the bottom of the permissions screen.

The "App not verified" warning

If you see a yellow warning saying "Google hasn't verified this app", click Advanced at the bottom of the warning, then click Go to Nynch (unsafe).

The warning appears for any app that hasn't completed Google's verification audit. The connection is secure either way; the audit is a Google process that's separate from the OAuth itself.

Step 4: Wait for the redirect

After you click Allow, Google sends you back to Nynch with the authorisation in hand. Nynch finishes the setup, swaps the OAuth code for an access token, and shows you back on the Settings → Email & Calendar page with the Gmail card now showing as connected.

The card now displays:

Status: an "Active" badge (green) if the connection is healthy.
Connected email: the address you authorised.
Configure button (replaces the Connect button) to open the setup wizard for import preferences.

Step 5: Import your email history

By default, Nynch only syncs new incoming mail from the moment you connect. To pull in past conversations (which is what makes the Today feed useful immediately), open the setup wizard.

Click Configure on the Gmail card. The Integration Setup Wizard opens. From there you can:

Pick a date range for the initial import (last 30 days, 90 days, 1 year, all time).
Select labels to include or exclude (e.g. skip Promotions and Updates).
Choose whether to auto-create contacts from email senders.
Decide whether to import meeting invites as activities.

Click through the wizard. When you hit Save, an "Importing Gmail history..." banner appears at the top of the Email & Calendar panel showing live progress (number of messages processed). You can keep using Nynch while this runs in the background.

If the import fails, a red banner shows the error with a Retry button.

Connecting additional sending accounts

The first Gmail you connect becomes your primary email identity. To send from additional accounts (e.g. a personal address plus a business address):

In Settings, find the Additional Email Sending And Receiving Accounts card (sits below Email & Calendar Integrations).
Click Connect Account in the top-right of that card.
Walk the same Google OAuth flow with the additional account.

Each additional account shows up in the Nynch composer's "From" dropdown when you compose a new email.

If something goes wrong

Symptom: "I clicked Connect but nothing happened." → Fix: Your browser may have blocked the popup. Look for a popup notice in the address bar and allow popups for app.nynch.com, then click Connect again.
Symptom: "Google says my account is in a Google Workspace organisation and the app is blocked." → Fix: Your Workspace admin has third-party access locked down. Send them the Nynch OAuth client ID (visible in the consent screen URL) and ask them to allow it. Until then you can connect a personal Gmail.
Symptom: "I got the 'App not verified' warning and want to be safe." → Fix: The warning is purely about Google's verification queue, not the connection's security. You can also check the source by inspecting the OAuth scopes Google lists. If you'd rather wait for verification, contact support for an ETA.
Symptom: "Card says Reconnect Required (red badge)." → Fix: Google OAuth tokens expire periodically (especially if you change your Gmail password). Click Reconnect on the card and walk the consent screen again.
Symptom: "Import banner shows 'Importing Gmail history...' but the count isn't moving." → Fix: Big imports (years of mail) can take a while. The banner updates roughly once per minute. If it doesn't move at all for 15+ minutes, click Cancel and try a smaller date range from the setup wizard.
Symptom: "I see import failed with 'rate limited' in the error." → Fix: Google rate-limits very large imports. Either pick a smaller date range, or click Retry; Nynch will resume from where it stopped.
Symptom: "I disconnected and reconnected; old emails are missing from contact timelines." → Fix: Disconnect doesn't delete already-imported data, but a fresh import only covers the date range you pick in the wizard. Re-run the import with an earlier start date.
Symptom: "Replies I send from Nynch don't appear in my Gmail Sent folder." → Fix: Make sure the connected account is the one you're sending from (check the From dropdown). Sent messages should show up in Gmail Sent within a few seconds. If not, contact support.

What changes once Gmail is connected

The Today screen's Emails section starts populating with AI-prioritised unread mail.
Every contact profile shows the full email history with that person.
The Reply Coach activates inline in the Nynch inbox, suggesting draft replies based on the conversation context.
Auto-logging kicks in: new emails to or from contacts in your Nynch network land on each contact's timeline without manual logging.
Email signature enrichment runs against historical mail to fill in phone numbers, titles, and company info on existing contacts.