Open a second Gmail account without signing out

To open another Gmail account in the same browser, stay signed in to the first one, click the profile picture or initial at the top right of Gmail, choose Add another account, and sign in. Gmail opens the second inbox in a new tab, and both accounts stay signed in. From then on the same menu lists both accounts, and clicking either one opens its inbox. Each inbox can live in its own tab at the same time. The two common annoyances come afterwards: links from other apps open in the wrong account, and it is easy to reply from the wrong inbox. This guide covers the steps, how the tabs tell accounts apart, when a separate profile, a container or a guest window is the better tool, and one Gmail feature that is being withdrawn. Every step was checked against current help pages on October 18, 2026.

The steps, from inside Gmail

Google documents the general procedure in Sign in to multiple accounts at once. Inside Gmail on a Mac it looks like this:

1. Open Gmail in the browser, signed in to the first account.
2. At the top right, click the profile picture or initial.
3. Choose Add another account. (On other Google pages the same item reads Add account.)
4. Sign in with the second address and password, and complete two-step verification if it is on.

The second inbox opens. To go back, click the profile picture again and pick the first account. Each choice opens in its own tab, so keeping both inboxes open is a matter of leaving both tabs open. Pinning the two tabs (right-click the tab, choose Pin) keeps them at the left of the tab bar in a fixed order.

How the tabs know which account is which

Look at the address bar after switching. Gmail's address includes a short segment such as /mail/u/0/ for one account and /mail/u/1/ for the next. That number reflects the order in which the accounts were signed in on this browser. It is not tied to the account itself, which has two consequences:

• A bookmark to /mail/u/1/ opens whichever account happens to be second on that day. If the accounts are signed in in a different order, the bookmark opens the other inbox.
• A link copied from the address bar and sent to a colleague points to their second account, not yours. Remove the /u/1 part before sharing a link to a Google file.

Why links still open in the wrong account

Once two accounts are signed in, a click on a Google link from outside the browser, such as from Slack or Apple Mail, often lands in the first account even when the link belongs to the second. Google's help page explains the cause: when signed in to more than one account, Google sometimes cannot tell which one you are using, for example when a new browser window opens, and in those cases may apply the default account. In many cases the default account is the one signed in with first.

There are two direct fixes at this level.

Change which account is first. Sign out of all accounts from the profile menu, then sign in first to the account whose links should win, usually the work one. Add the personal account second.

Switch the opened page to the right account. For Google Docs, Sheets and Drive, an access request page often means the file is shared with the other account. Open the profile menu on that page and switch, rather than requesting access.

If both accounts need to win, for example two client accounts used equally, the shared browser storage is the limit, and the next sections apply.

Removing an account from the menu

To take an account off the list, Google's page gives the path: go to myaccount.google.com, select the profile picture, choose Sign out or Sign out of all accounts, then Remove an account, and remove the entry. The page notes the steps must be repeated in each browser where the account was signed in.

Separate storage: profiles, containers and guest windows

All the methods in this section give the second Gmail account its own cookies. That stops the default account rule from applying, because the two accounts never see each other.

A browser profile

Chrome profiles, described in Google's Manage Chrome with multiple profiles, keep bookmarks, history, passwords and settings separate. Select Profile at the top right, choose Add Chrome profile, and pick a name, photo and color. Sign in to Gmail in the new profile with the second account. Each profile opens in its own window, so the two inboxes are two windows rather than two tabs.

Safari on a Mac has the same idea. Apple's guide, Create distinct browsing profiles in Safari on Mac, gives the steps: Safari > Settings > Profiles, click Start Using Profiles the first time, enter a name, icon and color, and click Create Profile. Open it with File > New Window. Apple notes that passwords in iCloud Keychain are available in every profile.

A Firefox container

In Firefox, the Multi-Account Containers add-on from Mozilla keeps each container's cookies separate, which its page describes as a way to use the web with multiple accounts. Open Gmail in a Work container tab and again in a Personal container tab, and both stay signed in within one window. This is the closest thing to "same browser, same window, separate accounts" without a second profile.

Guest mode and Incognito

For a one-off look at another account, such as a family member's inbox on your Mac, Chrome's guest window is the right tool. Google's Browse Chrome as a guest page says guest mode cannot see or change other profiles, and that when guest mode closes, browsing history, cookies and site data are deleted. Open it from Profile, then Guest profile. An Incognito window, opened with Shift, Command and N on a Mac, also starts a separate session that is removed when all Incognito windows close, as described on Google's Incognito page. Both are temporary: the next time, the account must sign in again.

Which method to use

	Add another account	Chrome or Safari profile	Firefox container	Guest or Incognito
Both inboxes open at once	Yes, in tabs	Yes, in windows	Yes, in tabs	Yes, until closed
Links from other apps open correctly	Default account wins	Opens in last used profile	Can be set per site	No
Stays signed in	Yes	Yes	Yes	No
Separate extensions and bookmarks	No	Yes	No	No
Good for	Two accounts, occasional switching	Work and personal all day	Firefox users	Someone else's account, once

A short rule: start with Add another account. If links keep going to the wrong place for a week, move one account to its own profile.

A Gmail feature to stop relying on

Some guides suggest a different approach: add the second address inside the first Gmail account, so one inbox collects both. Gmail's help page Add another email account on your computer describes this as Settings > See all settings > Accounts and import > Check mail from other accounts, with up to 5 addresses. That page now carries a notice, and Google's changes to Gmailify and POP page explains it: checking mail from third-party accounts through POP will no longer be supported, and the "Check mail from other accounts" option will no longer be available in Gmail on a computer. After the first quarter of 2026 the feature no longer accepts new users, and existing users can keep using it until January 2027. Mail already imported stays in Gmail. Google suggests automatic forwarding from the other provider, or the Gmail mobile app, instead.

On a Mac there is one more place to read a second account without touching the browser at all. Apple's Add an internet account page explains that an account added under System Settings > Internet Accounts can be used by Mail, Calendar and Contacts. Adding the second Gmail account there puts its mail in Apple Mail and its calendar in the Calendar app, while the browser keeps only the first account. That split suits people who want the second account mainly for notifications and quick replies, and it does not depend on the default account rule.

For two Gmail accounts, the simpler and lasting answer is to keep both signed in with one of the methods above, rather than pulling one into the other.

Habits that prevent replying from the wrong inbox

Two inboxes open side by side are easy to confuse, because Gmail looks identical in both. A few settings help:

• Give each account a different theme. In Gmail, the Themes option in Settings changes the background per account. A dark theme for work and a light one for personal makes the inbox recognizable at a glance.
• Check the profile picture before sending. The picture at the top right is the only reliable sign of which account a message will come from.
• Use a different signature per account. A signature with the company name in the work account makes a misdirected reply obvious before it is sent.
• Allow desktop notifications in each tab or profile. Gmail asks per site and per profile, and an account without permission goes quiet.

When tabs and profiles are not enough

For two accounts, tabs or profiles work. People who juggle three or more Gmail accounts, plus Slack or Notion for several clients, often end up with a stack of windows that look the same. An app aggregation browser for macOS handles this differently: every app in the sidebar has its own cookie container, so several Gmail accounts can sit side by side, each signed in, and links from one app can be routed to the app and account that own them. A unified inbox lists unread mail from every Gmail account in a workspace, newest first, and opens each message in its own account. The Features page describes link routing and the unified inbox, and the Workspaces page explains the separation.

To add the second account in that app, right-click the existing Gmail entry in the left sidebar and choose Add as Another Account (separate session). A new entry such as "Gmail 2" opens the sign-in page for the other address. That is a Pro feature. The free plan covers 1 workspace with up to 3 apps; the pricing page lists Pro at $7 per month, $60 per year, or $129 one-time, and the 14-day trial unlocks everything without a card.

What to change first

Open the second account with Add another account and pin both tabs. If links from other apps keep landing in the wrong inbox, sign out of everything and sign in first to the account that should win, or move the second account to its own browser profile. If the number of accounts grows beyond two or three, try SpaceDeck on its trial and compare it with the profile setup.