There are many reasons why you might want to get or send emails from an email address that’s not your main one. Setting up entirely new Gmail accounts for one-time use purposes can get annoying quickly, though.

Luckily, if you have Gmail, you don’t have to do that. Instead, once you’ve mastered the art of email aliases, your single Gmail account will be all that you need.

What Is a Gmail alias?

Variations on a theme

Credit: Joe Fedewa / How-To Geek

First off, you might be wondering what a Gmail alias is in the first place. A Gmail alias is not a separate email account, but rather, a functional variation of your existing primary email address that routes messages to the same inbox. Gmail, specifically, is flexible when it comes to aliases. Aliases serve as a method for a single Google account to receive mail intended for multiple, distinct address variations.

While many might believe they need to create entirely new accounts to separate their work, personal, or subscription emails, an alias allows for this segmentation without the logistical headache of managing multiple login credentials or switching between different browser tabs. When you use an alias, the underlying architecture of Gmail identifies the account owner and delivers the message to the main inbox, regardless of the cosmetic modifications made to the address.

Why would you use a Gmail alias?

Privacy, convienence, and more

For exactly the same reason that you would set up a new email address: as a disposable or trackable identity. By handing out an alias instead of your bare email address, you create a distinct channel for communication that can be easily monitored, filtered, or blocked. For instance, if you provide a specific alias to an online retailer, you can immediately identify if that retailer shares your contact information with third-party advertisers, as the incoming spam will be addressed to that unique alias. This turns your inbox from a passive receptacle into an active tool for data privacy and organization.

Or maybe it’s not as deep as this, and you just want to set up a disposable account for an app like Instagram, and your regular email address is already taken. That’s also fine. Because these aliases are native to the Gmail platform, they do not require third-party extensions or temporary email generator sites. They are permanent enough to retain important records, such as receipts or confirmation codes, yet flexible enough to be discarded or filtered out of sight if the associated traffic becomes overwhelming or irrelevant.

How to create and use “plus” aliases

Effortlessly categorize incoming emails

The most immediate (and in my opinion, versatile) way to generate a disposable address is through the “plus” alias feature. You simply insert a plus sign (+) and any combination of words or numbers after your username, but before the @gmail.com domain. For example, if your standard email is johndoe@gmail.com, you can instantly use johndoe+newsletters@gmail.com or johndoe+shopping@gmail.com when filling out a form. Google’s mail servers are programmed to ignore the plus sign and everything following it when routing the email to your account, ensuring the message arrives safely in your primary inbox. This method allows for an infinite number of unique email variations created on the fly, tailored to the specific context in which you are sharing your contact information.

You can pair these with Gmail’s filtering capabilities if necessary. Once you have started using a specific alias, such as username+bills, you can open your Gmail settings and create a filter specifically for that address. By telling Gmail to automatically apply a label, star the message, or skip the inbox entirely for any email sent to that specific alias, it’s like having Gmail sort its emails by itself without relying so much on Google’s own filters. This is particularly useful for managing subscriptions or services that send frequent notifications. If a service becomes too spammy, you do not need to unsubscribe or mark messages as spam manually; you can simply update your filter to delete any incoming mail sent to that specific plus alias. This grants you a high degree of control, effectively allowing you to “burn” the alias if it has been compromised or is no longer useful, simply by directing all traffic to it straight to the trash.

How to use “dot” aliases

The soft version of an email alias

Credit: Jorge Aguilar / How To Geek

The “dot” alias functions differently from the plus alias and is based on a unique architectural choice by Google regarding how they interpret periods within usernames. In the eyes of Gmail, dots are nonexistent characters within the part of the email address before the @ symbol. This means that john.doe@gmail.com, j.o.h.n.d.o.e@gmail.com, and johndoe@gmail.com are all interpreted as the exact same account.

If you accidentally forget to add a dot when signing in, or if someone sends an email to your address with extra dots added, the system recognizes your account and delivers the mail correctly. While this feature was originally designed to prevent message delivery errors caused by typos, it can be strategically leveraged to create variations of your email address for different purposes. These aren’t as versatile as plus aliases because the fact that they can be used as aliases is just a happy side effect, but it’s still good.

This method is particularly valuable when you are dealing with legacy websites or strict form validators that do not accept the plus sign used in the previous method. Some poorly designed web forms will reject an email address containing a + symbol as invalid, rendering the plus alias useless in those specific scenarios. In such cases, the dot alias serves as a reliable alternative. You might use john.doe@gmail.com for your banking and financial records while reserving the dot-less johndoe@gmail.com for social media or casual browsing. Although dot aliases do not offer the infinite permutations available with plus aliases (after all, there’s only so many combinations of dots you can put in your email address), they still provide a way to visually distinguish between different categories of mail. Just like with plus aliases, you can set up filters based on the specific placement of dots in the “To” field. This allows you to, say, segregate important professional communications from other notifications. Pretty cool.

You can send emails from an alias, too

Privacy without compromise

While receiving emails through an alias is automatic, sending mail from that alias requires a brief manual configuration within your Gmail settings. By default, even if someone emails you at username+work@gmail.com, your reply will originate from your primary username@gmail.com address, which reveals your main identity to the recipient.

To maintain the separation of identities and ensure your alias functions as a true two-way communication channel, you must configure the “Send mail as” feature. This is located under the “Accounts and Import” tab in the Gmail settings menu. Here, you can add your alias variations, such as your plus-address or a dot-variation, effectively telling Gmail to treat them as authorized senders associated with your account.

When setting this up, you will be prompted to enter the name you want associated with the alias and the email address itself. It is crucial to leave the “Treat as an alias” box checked, as this simplifies the process and utilizes your existing Gmail SMTP servers without requiring further authentication. Once this one-time setup is complete, a new dropdown menu appears in the “From” field whenever you compose a new message or reply to an email. This lets you toggle between your primary address and your configured aliases effortlessly.

Create an alias for everything

Email aliases make it easy to organize your inbox and shut down spam. Even if it seems like a lot of effort, you should take the time to punch in an email alias every time you create an account on a website. Use a “plus” alias when you want to quickly categorize incoming emailed based on type, and opt for “dot” aliases when websites refuse to work with the “+” symbol.