The simplest way depends on file size and who you're sending to
For files under 25 MB, email works fine — most email providers accept attachments that size. For anything larger, email fails or gets blocked. The best option depends on whether the person has a specific service already, how much control you want over who can access the file, and whether you need confirmation they received it.
A file that's 100 MB or smaller usually goes through a free cloud service like Google Drive, Dropbox, or OneDrive in under a minute. Anything larger than that — video files, design projects, backups — needs either a dedicated file-transfer service or a cloud storage account where you can upload once and share a link.
Key Takeaways
- Email attachments work for files under 25 MB; anything larger needs a different method.
- Google Drive, Dropbox, and OneDrive let you upload a file once and share a link instead of sending it as an attachment.
- For one-time transfers of very large files, WeTransfer and Tresorit work without requiring the recipient to create an account.
- Cloud storage services give you control over permissions — you can let someone view only, or read and edit.
- Always confirm the recipient received the file and can open it, especially for work or time-sensitive documents.
Using Google Drive, Dropbox, or OneDrive for files up to several GB
If you already use one of these services, uploading and sharing takes two steps. Open Google Drive, Dropbox, or OneDrive in your browser, click the upload button, select your file, and wait for it to finish. Then right-click the file, choose "Share," and paste the recipient's email address or copy the link.
The recipient gets an email with a link. They click it and can view the file when ready — they don't need to read it or create an account unless you set it that way. You can also choose whether they can only view, or whether they can read and edit. This matters for work files: if you don't want someone changing the original, set it to "Viewer" instead of "Editor."
The main limitation is storage. Google Drive gives you 15 GB free, Dropbox gives 2 GB, and OneDrive gives 5 GB. Once you hit that limit, you either delete old files or pay for more space. For a one-time large transfer, this works well. For regular transfers, a dedicated service might be simpler.
WeTransfer and Tresorit for files you don't want to store permanently
WeTransfer is designed for one-time transfers. You go to wetransfer.com, click "Add your files," select what you want to send, type the recipient's email, and click send. The file uploads and they get an email with a read link. The file stays on WeTransfer's servers for seven days, then deletes automatically. You don't need an account, and neither do they.
WeTransfer's free version handles files up to 2 GB. If you need to send something larger, the paid version goes up to 20 GB per transfer. Tresorit works similarly but focuses on security — files are encrypted, and you can set an expiration date or password. Tresorit's free tier handles 5 GB; paid plans go higher.
Use these when you're sending something once and don't need it sitting in your cloud storage afterward. They're also good when the recipient isn't someone you email regularly and you don't want to share a permanent link.
Sending files directly between computers on the same network
If you and the recipient are on the same WiFi network — at home, in an office, or at a coffee shop — you can transfer files without uploading to the internet. On Windows, right-click a file, choose "Share," and select the person's computer from the list. On Mac, use AirDrop: hold down Option, click the WiFi icon, and select the person's Mac from the menu.
This is fastest for very large files because it doesn't use your internet connection. It also means the file never leaves your local network. The downside is both computers have to be nearby and on the same WiFi, and the recipient has to accept the transfer on their end.
What to do when a file is too large for any standard method
Files larger than 20 GB — like raw video footage or complete project folders — usually need either a dedicated server or a paid plan on a service like Dropbox, Google Drive, or Tresorit. If you're sending this regularly, it's worth paying for cloud storage. If it's a one-time thing, ask the recipient if they can pick it up in person, or whether they have a preferred service their company uses.
Some workplaces use Aspera or Signiant, which are built for moving huge files quickly. If you're sending to a business, ask them first — they may have a system already set up. If you're sending to a friend or family member, cloud storage with a paid plan is usually the simplest option.
How to confirm the file arrived and is usable
After you send a file, message the recipient and ask them to confirm they can open it. This matters more than you'd think — a file can arrive but be corrupted, or the link can expire, or the recipient might not see the email. A quick text or email saying "Did you get the file and can you open it?" takes 30 seconds and saves hours of troubleshooting later.
If they can't open it, the problem is usually one of three things: the file format isn't compatible with what they have installed, the upload didn't finish completely, or the link expired. Ask them what error message they see, and try uploading again if the link is old.
Comparing your options by file size and situation
| File Size | Best Option | Why |
|---|---|---|
| Under 25 MB | Email attachment | Fastest, no extra steps, arrives in their inbox |
| 25 MB to 2 GB | WeTransfer or cloud storage link | Free, no account needed for WeTransfer, automatic cleanup |
| 2 GB to 20 GB | Google Drive, Dropbox, or OneDrive | You likely already use one, good permission controls |
| Over 20 GB | Paid cloud storage or in-person pickup | Free services max out; ask the recipient's preference |
| Same WiFi network | AirDrop or Windows Share | Fastest, no internet needed, most find |
Frequently Asked Questions
Why does my email say the file is too large to attach?
Most email providers limit attachments to 20 to 25 MB. Anything larger gets rejected before it sends. Use a cloud storage link instead — upload the file once and share the link in an email, which takes almost no space.
Can the recipient edit a file I share on Google Drive?
Only if you give them permission. When you share, you choose "Viewer" (they can only look), "Commenter" (they can add notes), or "Editor" (they can change the file). Set it to Viewer if you don't want changes, or Editor if you want them to work on it with you.
What happens to a file after I send it through WeTransfer?
It stays on WeTransfer's servers for seven days, then deletes automatically. The recipient can read it anytime during those seven days. After seven days, the link stops working and the file is gone.
Is it safe to send sensitive files through these services?
Google Drive, Dropbox, and OneDrive use encryption while files are in transit and at rest. For extra security, use Tresorit, which encrypts files before they leave your computer. Never send passwords, credit card numbers, or social security numbers through any service — use a phone call or in-person meeting instead.
Can I send a file to someone without their email address?
Yes. With Google Drive, Dropbox, or OneDrive, you can copy the share link and send it any way you want — text message, chat app, or social media. The recipient doesn't need an account; they just click the link. WeTransfer requires an email address, but Tresorit also lets you copy a link and share it however you choose.