Outlook
Buy Microsoft Outlook 2024, 2021, 2019 or 2016 as a genuine standalone product key for the classic desktop Outlook application on Windows. Each key is a perpetual, one-time purchase with the license type stated on the product page, and it is delivered by email within minutes of payment along with the official Microsoft download link.
Showing all 4 results
Showing all 4 results
Microsoft Outlook 2024 and earlier versions as standalone licenses
This category contains our single-app Outlook product keys: Microsoft Outlook 2024, Outlook 2021, Outlook 2019 and Outlook 2016. Every one of them licenses the classic desktop Outlook application for Windows, the full email, calendar, contacts and tasks program that businesses have run for decades. Each key is a perpetual license and a one-time purchase, so there is no subscription and no renewal.
It is worth being precise about what you are buying, because Microsoft now ships two different programs called Outlook. The new Outlook for Windows is a free, web-based app that comes with Windows 11 and replaces the old Mail app. Classic Outlook is the traditional desktop client with offline PST and OST data files, COM add-ins, rules that run on your machine, and full support for Exchange, Microsoft 365, Outlook.com, Gmail, IMAP and POP accounts. The keys on this page activate classic Outlook. If you searched for the latest Outlook version because the new app is missing something you rely on, Outlook 2024 is the current perpetual release of the classic client.
We are an independent reseller and not affiliated with Microsoft. You buy the license from us, download the installer from Microsoft's official servers, and activate with the 25-character key we email you.
Which Outlook version is right for you
All four versions share the same core: email accounts, folders, rules, signatures, calendar with meeting invitations, contacts, tasks and search. The differences are support status, Windows compatibility and a handful of features added over the years. The table sets them side by side.
| Version | Support status | Windows requirement | Notes | Best for |
|---|---|---|---|---|
| Outlook 2024 | Supported until October 9, 2029 | Windows 10 or 11 | Current perpetual release of classic Outlook | New installs on a current PC |
| Outlook 2021 | Mainstream support ends October 13, 2026 | Windows 10 or 11 | Matches Office 2021 suites | Matching an existing Office 2021 installation |
| Outlook 2019 | Extended support ended October 14, 2025 | Windows 10 or 11 | Matches Office 2019 suites | Replacing a lost 2019 key or matching a 2019 suite |
| Outlook 2016 | Extended support ended October 14, 2025 | Windows 7 SP1, 8.1, 10 or 11 | Last release that installs on Windows 7 and 8.1 | Older PCs and legacy environments |
Our honest recommendation for a primary work computer is Outlook 2024. It has the longest support runway and is the version Microsoft is actively maintaining. Outlook 2021 remains a sound choice when the rest of your Office installation is 2021 and you want the components to match. Outlook 2019 and Outlook 2016 still activate and still work, but Microsoft no longer publishes security updates for them, so we position them as legacy options for older hardware or for keeping an existing environment consistent rather than as first choices.
Why buy Outlook on its own
Plenty of people already have Word and Excel through an Office Home and Student suite, which does not include Outlook, or they use Google Docs for documents but need a real desktop mail client for a business mailbox. Others run a small office where every PC needs Outlook but only a few need the rest of Office. In each of those cases a standalone Outlook product key costs less than a full suite and avoids installing programs nobody will open.
What classic Outlook does that webmail does not
- Works offline. Mail, calendar and contacts are cached locally, so you can read, search and draft on a plane or during an outage, and everything syncs when you reconnect.
- Handles several accounts in one window. Combine a company Exchange mailbox, a Microsoft 365 account, an Outlook.com address and a Gmail account, each with its own folders and signatures.
- Keeps a local archive. PST files let you store years of mail on your own drive, back it up and move it to a new PC.
- Runs rules and add-ins on your machine. Sorting, flagging and forwarding rules, plus CRM, e-signature and meeting add-ins, run inside the desktop client.
- Integrates with the Office suite. Send a Word document or Excel workbook straight from the ribbon, and paste rich content between applications.
Which edition should I choose?
Use the list below to match the key to your situation. Each product page states the license type and the Windows versions it supports.
- Microsoft Outlook 2024: the current perpetual release of classic Outlook, supported until October 9, 2029. Our default recommendation for any Windows 10 or Windows 11 PC.
- Microsoft Outlook 2021: the right pick when your other Office apps are 2021 and you want a matching version, or when a company standard specifies 2021.
- Microsoft Outlook 2019: a legacy key for replacing or completing an Office 2019 installation on Windows 10 or 11. No longer receives security updates.
- Microsoft Outlook 2016: the last version that installs on Windows 7 SP1 and Windows 8.1, useful for older PCs that cannot run a newer release. Also out of support.
- Microsoft Office 2024 Home and Business for 1 PC or Mac: if you also need Word, Excel and PowerPoint, this suite includes Outlook 2024 and is available for Mac as well as Windows.
- Microsoft Office 2024 Professional Plus: the full Windows suite with Outlook, Word, Excel, PowerPoint, OneNote and Access for one PC.
How activation and delivery work
Once your payment is confirmed, we email your Outlook product key, usually within minutes, seven days a week. The message includes the 25-character key, the official Microsoft download link for the version you bought and a short installation guide. The key is also stored under My Account on our site for later reference.
- Sign in to a Microsoft account, or create one for free, and redeem the 25-character key. Microsoft attaches the Outlook license to that account.
- Download the installer from the link Microsoft provides and run it on your Windows PC.
- Open Outlook, sign in with the same Microsoft account, and the application activates.
- Add your email accounts. Outlook detects settings automatically for Microsoft 365, Exchange, Outlook.com and Gmail, and accepts manual IMAP or POP settings for anything else.
If Microsoft asks for telephone activation, which occasionally happens with older versions, our team handles the Installation ID and Confirmation ID exchange with you by email. Every key is covered by our 30-day money-back guarantee. If a key cannot be activated and our support team cannot resolve the problem, we replace the key or refund the order in full.
Retail, OEM or volume
Every product page in this category states its license type. Retail keys can be transferred to a replacement PC after Outlook is removed from the old one, which is what most individuals and small offices want. OEM keys are locked to the first computer they activate. Volume (MAK) keys carry a fixed number of activations and are designed for organizations that manage many machines. When you buy a single Outlook license for your own computer, a retail key is the type to look for, and the product page will confirm what you are getting before checkout.
Frequently asked questions
Is this the new Outlook app or classic Outlook?
These keys license classic Outlook, the traditional desktop application. The new Outlook for Windows is a separate, free app that Microsoft includes with Windows 11; it does not use a product key and does not support PST files, most COM add-ins or full offline work. Classic Outlook 2024 is the current perpetual version of the desktop client, and Microsoft has published a support timeline for it that runs until October 9, 2029. If the features you rely on are missing from the new app, classic Outlook is what you want.
Does Outlook 2024 work with Gmail and other non-Microsoft accounts?
Yes. Classic Outlook supports Microsoft 365, Exchange Server, Outlook.com, Gmail, and any IMAP or POP mailbox from another provider. Gmail and Outlook.com accounts are configured with your normal sign-in, and Outlook detects the server settings automatically. For a small business host or an ISP mailbox you enter the IMAP or POP server details manually. You can run several accounts of different types in the same window, each with its own inbox, sent folder and signature.
Can I use Outlook 2024 on a Mac?
The single-app Outlook keys in this category are for Windows. If you need Outlook on a Mac, the practical route is Microsoft Office 2024 Home and Business for 1 PC or Mac, which includes Outlook alongside Word, Excel, PowerPoint and OneNote and can be activated on one Mac. Please check the platform before ordering. If you have already bought a Windows Outlook key and need Mac instead, contact our support team before installing and we will help you sort it out.
Should I buy Outlook 2016 or 2019 to save money?
Only if you have a specific reason, such as an older PC running Windows 7 or 8.1 or an existing Office 2016 or 2019 installation you want to keep consistent. Microsoft's extended support for both versions ended on October 14, 2025, so they no longer receive security updates. They still install and activate, and we still guarantee them, but for a computer you use every day for business email we recommend Outlook 2024 or 2021, both of which remain under Microsoft support.
What happens if the key does not activate?
Contact us at support@softwareinstore.com with your order number and a description of the message Outlook shows. A person reads and answers support email seven days a week. Most activation problems are resolved by confirming the correct Microsoft account is signed in or by completing a phone activation, which we guide you through. If the key genuinely cannot be activated and we cannot fix it, we send a replacement or refund the order in full under our 30-day money-back guarantee.
A dependable desktop mail client, licensed once
Whether you need the current Outlook 2024 for a new PC or an Outlook 2016 key to match an older machine, each license here is genuine, perpetual and delivered by email within minutes. Read how it works for the full ordering and activation process, browse our Microsoft Word licenses if documents are next on your list, and visit our FAQs for more answers on licensing, delivery and support.