How to email a large video: Gmail, Outlook and Yahoo limits
Email is the oldest way to send a video and still the strictest. Here are the real limits for each provider — and the reason a file that looks small enough sometimes isn't.
The limits, provider by provider
As of September 2026, according to each provider’s own help pages:
| Provider | Attachment limit | Over the limit |
|---|---|---|
| Gmail (personal) | 25 MB in total | Gmail swaps the attachment for a Google Drive link |
| Gmail (work or school) | Set by your administrator | — |
| Outlook.com on the web | 25 MB per file | Share from OneDrive instead, up to 2 GB |
| Outlook app with an Outlook.com or Gmail account | 20 MB per email, attachments and message together | — |
| Outlook app with a work (Exchange) account | 10 MB per email by default | Your administrator may set a different limit |
| Yahoo Mail | 25 MB in total, sending and receiving | — |
The Outlook row that catches people is the app: the same Outlook.com account allows a 25 MB file on the web but a 20 MB email in the desktop app, because the app counts the whole message.
Why a file under the limit can still bounce
Email was designed for text. To send a video, your mail app converts it into text characters for the journey, and that encoding makes it about a third larger in transit. Depending on where a provider measures, a 20 MB video can be treated as a much larger message.
That’s why people report files well under 25 MB still turning into Drive links in Gmail. If it matters that your video arrives as a real attachment, aim a few megabytes under the cap — around 18 MB for a 25 MB limit is a safe habit.
How much video fits?
| Bitrate | Fits in 18 MB | Fits in 25 MB |
|---|---|---|
| 1.5 Mbps | about 1:33 | about 2:09 |
| 2.5 Mbps | about 0:56 | about 1:18 |
| 4 Mbps | about 0:35 | about 0:48 |
Durations allow 3% for container overhead. For email, 720p at 1.5–2.5 Mbps is the sweet spot: it plays well in any mail client and leaves a useful length.
Three ways to send it
1. Compress it to fit
Best when the video should open straight from the email. In Ninja, the Gmail, Outlook and Yahoo Mail presets size the file for each provider’s cap, at a resolution that suits it. If your first send turns into a Drive link, choose Target size and type a few megabytes less.
2. Send a cloud link
Gmail does this for you above 25 MB; Outlook.com offers OneDrive links up to 2 GB. The recipient streams or downloads from the cloud. It avoids the limit entirely — but your video now lives on that service, under its terms, until you delete it.
3. Split it
A long video can go as two or three emails, each under the cap. Trim it into parts, then compress each part.
Frequently asked questions
What is the maximum video size I can email?
25 MB with Gmail or Yahoo Mail, 25 MB per file on Outlook.com’s website, 20 MB per message in the Outlook app for personal accounts, and often 10 MB on work accounts.
Why did Gmail turn my video into a Drive link?
Because the attachments came to more than Gmail’s 25 MB limit once they were prepared for sending. Compress the video a few megabytes under the limit and it’ll attach normally.
Does compressing a video for email ruin it?
Not if you choose the size well. At 720p and 1.5–2.5 Mbps, a phone video looks good in any mail client, and even a two-minute clip fits.
Sources
Every limit above was checked against these on 23 September 2026. Platforms change them; if one has moved, tell us.