An email alias is an additional email address that delivers messages to your existing inbox. You don't need a new account or login; any email sent to the alias arrives in the same place as everything else, just under a different address. It's one of the most underused features on almost every major email provider, and for anyone managing a high volume of correspondence, it's worth knowing how to use it.
What is an email alias?
An email alias is an additional email address that delivers messages to an existing inbox. You don't get a new account, a new login, or a new mailbox. Instead, any email sent to your alias arrives in the same place as everything else, just under a different address.
The email alias meaning is straightforward: it's a forwarding address tied to your primary account. Think of it as a second name on the same mailbox.
This is what makes it different from creating a separate email account. A second account gives you a separate inbox with its own storage, settings, and login credentials. An alias gives you a second address with none of that overhead.
Most major providers support aliases natively. You can create a Gmail alias email, an Outlook email alias, an iCloud email alias, and even a Yahoo email alias, all routing back to the same inbox you already use. There are also dedicated third-party email alias services for people who want more privacy control than the standard platforms offer.
Aliases control where email comes from. Fyxer handles everything that lands, categorizing your inbox automatically and drafting replies in your voice.
What is a good email alias?
The most useful aliases are ones that route a specific type of communication cleanly, without creating ambiguity about who sent or received it.
A few common approaches:
Role-based aliases work well for businesses and freelancers. For a sales rep, that might mean a different alias for each stage of the pipeline. For a customer support team, it's addresses like hello@ or support@ that route queries to the right people without exposing a personal inbox. The principle is the same either way: the right email lands where it should, and your primary address stays out of it.
Project-based aliases help you keep work streams separate without managing multiple accounts. A project manager overseeing several workstreams might set up a unique alias per client or campaign, so mail from each one is easy to filter and find.
Signup aliases are increasingly popular for managing privacy. You use a distinct address when registering for trials or newsletters. If that address starts attracting spam, or if a service's data gets breached, you can delete the alias without affecting your primary address or any important correspondence.
The best alias is one that has a clear, single purpose. Vague aliases (something like my-other-email@) tend to accumulate clutter rather than reduce it.
How do I create an alias for my email?
The steps to create an email alias vary by provider, but the process is straightforward on all major platforms. Here's how to set up an email alias on the most common ones.
How to create an email alias in Gmail
For personal Gmail accounts, you can add a send-as alias from your settings:
Open Gmail and click the gear icon, then "See all settings"
Go to "Accounts and Import"
Under "Send mail as," click "Add another email address"
Enter the name and alias address you want to use
Follow the verification steps sent to that address
For Google Workspace accounts, your organization's administrator handles alias creation through the Google Admin console. You won't be able to add one yourself without admin access.
How to set up an Outlook email alias
For personal Outlook.com accounts:
Sign in at outlook.com and go to account settings
Select "Your info" then "Manage how you sign in to Microsoft"
Choose "Add email" and select "Create a new email address and add it as an alias"
Enter your preferred alias and save
For Microsoft 365 and Exchange, alias management is handled by an administrator through the Microsoft 365 admin center.
iCloud email alias
Apple allows users to create up to three email aliases on a free iCloud account:
Go to iCloud.com and open Mail
Click the gear icon in the lower-left and choose "Preferences"
Select the "Accounts" tab
Click "Add an alias" and follow the prompts
Each alias appears as a separate sender option when you compose a new email.
Yahoo email alias
Yahoo's alias support has changed over the years. At the time of writing, Yahoo Mail Plus (the paid tier) offers alias support, while free accounts have more limited options. Check your current account settings under "Security" or "Manage accounts," as availability depends on your plan. Verify the current status directly with Yahoo before relying on this for important correspondence.
Add email alias in Active Directory
For IT and systems administrators, aliases can be added to user accounts in Microsoft Active Directory via the Microsoft 365 admin center or through Exchange Online. The process involves navigating to the user's mailbox settings in the Exchange admin center and adding proxy addresses under the "Email addresses" tab. This can also be done at scale using PowerShell, which is useful when managing multiple users. Microsoft's official documentation covers both methods in detail.
Email alias services: When the built-in options aren't enough
Your email provider's native alias feature is a good starting point. But if you're using aliases primarily for privacy or managing a large number of separate identities, a dedicated email alias service gives you more control.
These services work differently from platform aliases. Instead of creating a second address on your existing domain, they generate addresses on a separate domain entirely. Your primary email address never appears in the chain. If an alias gets compromised or starts attracting spam, you disable it and move on. Nothing touches your main account.
Here are the main options, and who each one suits.
SimpleLogin
SimpleLogin is widely considered the best overall balance of features, usability, and privacy among dedicated alias services. It lets you generate unlimited aliases, supports custom domains, and includes a browser extension that creates new aliases on the fly as you fill in signup forms.
SimpleLogin was acquired by Proton in 2022, the company behind ProtonMail and ProtonVPN. If you're already using Proton's ecosystem, SimpleLogin Premium is included with a paid Proton account at no additional cost. For everyone else, the standalone premium plan is $36 per year.
The free tier gives you up to 10 aliases, which is enough to test the service before committing. Both sending and receiving are supported, so an alias is a full-fledged email address rather than a receive-only forwarding address.
Best for: Users who want a polished experience, Proton ecosystem users, and anyone managing a large number of aliases across personal and professional accounts.
Addy.io (formerly AnonAddy)
Addy.io is open source, built with a lightweight and privacy-by-design philosophy, and aggressively focused on transparency. Its free tier is notably generous: the free plan supports unlimited personal subdomain aliases, with a Lite paid plan available at £1 per month that adds custom domain support.
If you prefer a standalone, independent alias service with a more generous free tier, addy.io is the stronger pick for most privacy-minded users who don't want to be tied to the Proton ecosystem. It also supports self-hosting, which means technically capable users can run the entire service on their own infrastructure.
One thing to be aware of: on the free plan, sending replies from an alias isn't included. You'll need a paid tier for that. Addy.io offers unlimited aliases but does have restrictions on sending and replying to emails on its free plan.
Best for: Budget-conscious users, people who prefer open-source tools, and those who want the option to self-host.
Firefox Relay
Firefox Relay is Mozilla's take on email aliasing. It's tightly integrated with Firefox and generates aliases directly from your browser as you browse. Firefox Relay limits free accounts to five aliases, with additional features available under the premium plan.
It's a convenient option if you already use Firefox heavily and want something that requires minimal setup. However, Firefox Relay doesn't support PGP encryption for forwarded emails, unlike SimpleLogin and addy.io. For straightforward spam protection and occasional use, it does the job. For anything more involved, the other options in this list offer more flexibility.
Best for: Casual users who want a browser-native alias tool without committing to a separate service.
Apple Hide My Email
Apple's Hide My Email is built into iCloud and works across Apple's ecosystem. When you sign up for an app or service on an Apple device, you can generate a unique, randomized alias on the spot. It routes to your primary iCloud address and can be disabled at any time.
It's one of the easiest alias options available, because there's nothing extra to install or configure. The limitation is that it's Apple-only. It works best if you're primarily signing up for things through Safari or Apple apps, and it's less useful if you need to manage aliases across platforms or create them outside the Apple ecosystem.
Best for: iPhone and Mac users who want a frictionless privacy layer for app and website signups.
StartMail
StartMail doesn't offer a free plan, but includes unlimited email aliasing in all paid subscriptions (€4.99 per month for the personal plan or €6.99 for the business plan). It's a fully private email provider with built-in aliasing, so you're not adding a forwarding layer on top of Gmail or Outlook. Instead, your entire email setup runs on a privacy-focused platform.
If you're thinking about switching email providers anyway and want aliases included as a first-party feature rather than a bolt-on, StartMail is worth considering. It's a more significant commitment than adding an alias service to your existing setup, but it removes the third-party forwarding hop entirely.
Best for: Users who want a private email provider with aliasing built in, rather than a separate tool layered over their current inbox.
Are email aliases safe?
For most purposes, yes. Email aliases are a practical and widely used feature. But it helps to understand exactly what protection they do and don't offer.
An alias protects your primary address. If you use a separate alias to sign up for services, your main address doesn't appear in those databases. If a service is breached and its user list is exposed, your primary address isn't in it. You can simply delete the alias and move on.
According to research by IBM, the average cost of a data breach reached $4.88 million in 2024, with compromised credentials and exposed email addresses among the most common entry points. For individuals, the practical consequence is usually a flood of spam or phishing emails to the address that was exposed. An alias limits that exposure.
What an alias doesn't do is encrypt your email content or anonymize your IP address. The email itself travels through the same infrastructure. If you need stronger privacy, a dedicated email alias service adds a masking layer that standard platform aliases don't include.
But if an alias you use to send email is compromised or associated with spam, there's a small risk that emails sent from it may be flagged. Using an alias from a reputable domain (your own domain, or your email provider's domain) reduces this risk.
What are the disadvantages of email aliases?
Aliases are useful, but they aren't a solution to every inbox problem. Here's where they fall short.
All mail still arrives in one place: An alias routes everything to the same inbox. If you're not careful, you can end up with more mail competing for attention in a single view, rather than less. The alias itself doesn't create any separation inside your inbox unless you set up filters to sort it.
Reply confusion: If you receive an email sent to an alias but reply from your primary address, the recipient sees your main address, not the alias. Most providers let you configure a "reply as" setting, but it requires deliberate setup. Miss that step and you've effectively exposed the address you were trying to protect.
Alias limits: Platforms cap how many aliases you can create. Gmail's send-as option allows up to 30 external addresses. iCloud limits free users to three aliases. Outlook's limits vary by plan. If you need more flexibility, a third-party email alias service typically offers higher limits.
Not a substitute for a separate account: If you genuinely need two separate inboxes with distinct storage and settings, an alias won't replicate that.
Portability issues: Aliases are tied to the platform where you created them. If you switch providers, your aliases don't transfer. Anyone who contacts you on an old alias will no longer reach you.
One thing worth noting: even with a well-structured alias setup, a busy professional inbox still needs a system behind it. Fyxer's Admin Burden Index 2026, based on a survey of 5,000 UK and US office workers, found that the average professional receives 29 emails a day that require a response. Aliases help you manage where email comes from, but they don't reduce how much of it needs your attention.
Getting more from your inbox than a tidy address
An email alias protects your primary address and keeps different types of correspondence where they belong, without adding another account to manage.
But an alias is structural. It shapes how mail arrives. What happens after it lands in your inbox is a separate question, and for most professionals, that's where the real time goes.
Fyxer's Admin Burden Index found that office workers lose 5.6 hours every week to admin that AI could handle, with email ranked as the single biggest daily drain across every category. Setting up aliases can reduce noise at the edges, but the volume of mail that genuinely needs attention doesn't change.
That's the gap Fyxer fills. Once your email arrives, Fyxer's AI email organizer sorts it into categories automatically, so you can see at a glance what needs a response, what's waiting on someone else, and what you can ignore. Its AI email writer then drafts replies in your tone of voice, ready for you to review and send. You don't have to write from scratch, and you don't have to decide what to open first.
A good alias strategy and a well-organized inbox work well together. One controls the front door. The other handles everything that walks through it.
What email aliases can (and can't) do for your inbox
An email alias is an additional address that delivers mail to your existing inbox. You don't need a new account or a new login. It's a simple way to protect your primary address, manage different types of correspondence, and keep your contact details more intentional.
You can create aliases natively in Gmail, Outlook, iCloud, and (on paid plans) Yahoo. For business environments, aliases can also be added via Active Directory or the Microsoft 365 admin center. If you need more flexibility or stronger privacy, dedicated email alias services are available.
Aliases aren't a fix for inbox overload. But combined with a clear inbox system, they're a useful part of keeping your email working for you.
Email alias FAQs
What's the difference between an email alias and a separate email account?
A separate account has its own inbox, storage, and login. An alias is just an additional address that routes to an account you already have. If you need two fully independent inboxes, you need two accounts. If you just want a second address for a specific purpose, an alias is simpler and easier to manage.
Are email aliases free?
On most major platforms, yes. Gmail, Outlook.com, and iCloud all include alias functionality at no extra cost, though iCloud limits free users to three aliases. Yahoo's alias support is limited to paid plans. Third-party email alias services vary, with some offering free tiers and others charging a monthly fee.
Can I send email from an alias address?
Yes, on most platforms. Gmail, Outlook, and iCloud all let you select which address to send from when composing a new message. You'll need to configure this in your account settings and, in some cases, verify the alias address first.
How many email aliases can I have?
It depends on your provider. Gmail allows up to 30 send-as addresses. iCloud free accounts support up to three aliases. Microsoft 365 limits vary by plan and subscription. Third-party email alias services typically offer higher limits, and some offer unlimited aliases on paid plans.
