A Second Hotmail Account or an Alias? Microsoft's Rules

Can you have multiple Hotmail accounts? Yes, and Microsoft’s own support pages assume you might. But most people asking that question do not actually want a second account. They want a second address: something for a side project, a marketplace listing or a newsletter pile, kept apart from the address their bank uses. Microsoft has a free feature for exactly that, and it is not a second account.

Can you have multiple Hotmail accounts?

Nothing in Microsoft’s consumer rules caps how many personal accounts one person holds. What Microsoft rules out is joining them up later.

What Microsoft allows: separate accounts used side by side

Microsoft’s page on combining accounts is blunt about the limit, then spends most of its length on the alternative. Its words: “It’s not possible to link, merge, or combine Microsoft personal accounts … but accounts can be used side by side.”

Side by side is the supported pattern, and the same page walks through the practical ways to run two accounts at once, from adding both to Outlook to separate Microsoft Edge profiles.

What you can’t do: merge or link personal accounts

Two consequences catch people out. Purchases, balances and game progress stay where they were bought, and one account cannot be folded into the other as an address. Microsoft states it plainly: “You cannot add another Microsoft account (either current or closed) as an account alias, but you can add another Microsoft, Gmail, or work/school email to Outlook.”

So there is no tidy-up path: you cannot open a second account now and attach it to the first later. Decide the route before you create anything.

Second account or alias: what each one actually is

A separate Microsoft account: its own inbox, password and clock

A new account is a new identity at Microsoft: its own password, security information, mailbox, storage and inactivity clock. Two accounts share nothing unless you connect them yourself.

That separation is the point when an address has to stand on its own, with its own password and its own recovery details.

An alias: another address on the same account, sharing one inbox

An alias is an extra address on the account you already have. Microsoft’s page on changing your account address puts it this way: “Email addresses associated with your Microsoft account are called aliases and they use the same contacts, online storage, subscriptions, and account settings.” It adds that “Your aliases share a single password,” and that “you can select any of them for sending and receiving email.”

So one mailbox receives everything, one password opens it, and every alias can sign you in: “you can still use any of your aliases to log into your Microsoft account.” One constraint is worth knowing: VOIP numbers cannot be added as a way to sign in or get verification codes.

Adding an alias takes a minute. Sign in to your Microsoft account, open your account info and go to the page for how you sign in to Microsoft. Select Add email, then follow the prompts to create a new Outlook.com address or add one you already own. It then shows up in the from menu, and mail sent to it lands in your usual inbox.

Side by side

The last two rows decide most cases. Neither route gives you an address somebody else can hold alone: the Microsoft Services Agreement states that “You cannot transfer your Microsoft account credentials to another user or entity,” and an alias password opens the whole account anyway.

Can I create a second Hotmail account? What you need first

An address that has never been used

Microsoft’s create-account page is explicit that old addresses do not come back: “Even if an account was closed a long time ago, you cannot create a new account using the old email address.” Any address once registered is out, however long ago it was abandoned, so expect to try a few variants.

A phone number can belong to only one account

Here is where second accounts stall. Microsoft’s help page on reusing numbers states: “To protect your data, a phone number can only be added to a single Microsoft account.” Your number is already on the account you have, so a second one needs another number or a different verification route. If a recycled mobile number turns out to be attached already, the page’s answer is the same: use another number.

Which domains the sign-up page offers today

Microsoft’s create-account article talks about getting a new Outlook.com address and does not list the older domains. Checked on 18 September 2026: the sign-up page builds its domain menu in the browser, so there is no fixed list to quote here, and this guide makes no claim either way about whether new @hotmail.com addresses are still offered. Start the sign-up, type a name and open the domain menu; whatever it shows on the day you look is the answer.

Outlook alias limits and the “We limit how frequently you can add aliases” message

What Microsoft publishes, and what it doesn’t

Search for an alias limit and you will find confident numbers. Check their source and the ground gives way: the Outlook.com article that once covered adding and removing aliases now redirects to “How to add an email address to your Microsoft account”, and that page states no maximum and no add-frequency figure.

Community threads on Microsoft Q&A do circulate figures. Those are forum reports from moderators and volunteers, not documented policy, so this guide does not repeat them. Plan as though the ceiling is low and undocumented.

What the message means and what to do

The wording people report hitting is: “We limit how frequently you can add aliases to your account. Please try again later.”

The message is a rate limit and it clears with time. Microsoft does not publish what triggers it or how long the wait lasts, so the supported options are the ones its pages give: wait and try again, or use an address you already control. Nothing is gained by opening throwaway accounts or retrying from another device. If the address is needed today, a second account or a domain you own will get you there faster.

Removing an alias: what happens to the address

Removing an alias is a separate action on the same account address page where you added one. Treat removal as permanent: addresses used for Microsoft accounts cannot be reused, and nothing Microsoft publishes says that dropping one frees room to add another. Before removing an alias, check what still points at it: sign-ins elsewhere, password resets, two-step verification and invoices.

Can I have 2 Hotmail accounts in one inbox? Multiple Outlook accounts on one computer

You cannot merge two mailboxes, but you can read both in one window.

Adding several accounts to Outlook

In new Outlook for Windows, the account list lives under View, then View settings, then Accounts and Your accounts. Under email accounts choose Add Account, pick a suggested address or type another, select Continue, then enter the password if prompted and select Done. The same steps add each further account, and you can mark one as the primary account.

Each account keeps its own folders and send-from address. That is the practical difference from aliases: with two accounts you choose the mailbox, with aliases the address inside one mailbox.

Away from the desktop app, Microsoft’s combining-accounts page points at separate Microsoft Edge profiles for the browser. On a phone, the Outlook mobile app holds several accounts at once; in Outlook for Android you add each one under Settings, then Add Account.

Forwarding one account’s mail into another

If you only want to watch one inbox, forward the quieter account. In new Outlook, open Settings, then Mail then Forwarding, turn on Enable forwarding, enter the destination and select Save. On Outlook.com the path is Settings, Mail, Forwarding and IMAP. Select Keep a copy of forwarded messages and leave it on: it keeps a record in the original account and gives you a reason to sign in there.

Other mail apps need modern authentication

To read a second Microsoft address in a non-Microsoft mail client, start with the date: as of September 16th, 2024, Microsoft says Basic Authentication is no longer available to access any Outlook account in non-Microsoft email apps, Outlook.com and Hotmail.com included. Clients need modern authentication, and the notice carries per-client steps: set Thunderbird’s authentication method to OAuth2, or remove the account in Apple Mail and add it back as Outlook.com. For Outlook on Windows, Microsoft lists support in current Microsoft 365 subscription SKUs and Outlook 2021 LTSC at build 11601.10000 or higher, and names Outlook 2007, 2010, 2013, 2016 MSI and 2019 LTSC as versions that do not support modern authentication for Outlook.com at all.

Keeping two accounts alive: Microsoft’s sign-in rules

A second address is only useful if it still exists when you need it, and two rules apply.

One sign-in every two years for the account

Microsoft’s account activity policy sets the outer limit: a single sign-in inside any two-year window keeps a Microsoft account active.

Open each Outlook.com mailbox once a year

The Microsoft Services Agreement, published July 30, 2025 and effective September 30, 2025, sets a shorter clock for mail and storage: “You must sign into your Outlook.com inbox and your OneDrive (separately) at least once in a one-year period, otherwise we will close your Outlook.com inbox and your OneDrive for you.”

The two halves are counted apart, so signing in to the account elsewhere is not the same as opening the mailbox. Put a yearly reminder against any spare Hotmail address. Once it closes, the address is unrecoverable.

That is one more argument for aliases on personal addresses: an alias has no clock of its own and lives as long as the account under it.

Which route fits: side business, role address or testing

A side business

Start with an alias. A sole trader who wants orders kept out of personal mail gets that for nothing: a distinct address on the invoices, one inbox to watch, one password to protect.

Move to a separate account when the address needs its own password and recovery route, such as a shop sign-in you want isolated from your personal identity.

Role addresses such as support@

Neither route suits an address a team shares. Aliases fail because the password is the whole account, and second consumer accounts fail because a shared sign-in has no owner and no audit trail.

The supported answer is your own domain on a Microsoft 365 business plan, where each person signs in as themselves and the shared mailbox has no password anyone uses: Microsoft says its account carries a system-generated password that is not known or intended for use, and that sign-in should stay blocked. The same guidance recommends a custom domain for sending and notes that adding or changing domains requires a Domain Name Administrator on a business or enterprise plan. While you set that up, plan the role and recovery addresses that survive staff turnover at the same time, because the recovery route is the part teams forget until someone leaves.

Separate test inboxes for sign-in and email QA

Testing is the one case where extra Microsoft mailboxes have to be separate accounts. Checking that a Microsoft sign-in works, that a confirmation mail renders in Outlook.com, or that a helpdesk opens a ticket from an outside sender all need a mailbox your product does not already know, which aliases on one account cannot supply.

Build those as your own accounts where you can. For external mailboxes, Hotmail account grades from $0.99 with orders from 10 and Outlook.com account grades from $1.25 with orders from 5 ship with sign-in and recovery information in the delivery file and a 7-day replacement window on any login that fails. Be clear-eyed: buying account access sits outside Microsoft’s terms and Microsoft can close any account at any time, so bought mailboxes belong in test plans, never in the recovery chain for anything that matters. Our guides to Outlook and Hotmail inboxes for Microsoft sign-in tests and external requester inboxes for helpdesk testing size such sets.

Whatever the mailbox, the code of conduct in the Microsoft Services Agreement bans spam and unsolicited bulk mail. Extra accounts are not a way around sending limits.

Where to start

For a personal side project, add an alias first. It costs nothing, keeps one password and one inbox, and carries no separate inactivity clock to forget. Open a second account when the address has to carry its own sign-in and its own recovery details, and remember the phone-number rule before you begin. If the address has to outlive one person or belong to a team, skip both and put it on a company domain where ownership is explicit.

Running a QA or support team that needs several independent Microsoft test inboxes? Message @nexkyc on Telegram with the count and grades you want, and we will price the set.