Video Compressor & ResizerVideo Too Large to Email? Compress It on iPhone in One Minute
By Olga Klishevich · Updated
"Attachment size exceeds the allowable limit." Every email provider caps attachments — usually at 20–25 MB — while a single minute of iPhone 4K video weighs around 400 MB. Here's how to close that gap in about a minute, without cloud links your recipient may not open.
Email attachment limits in 2026
| Provider | Attachment limit |
|---|---|
| Gmail | 25 MB |
| Outlook / Hotmail | 20 MB |
| iCloud Mail | 20 MB (Mail Drop for larger) |
| Yahoo Mail | 25 MB |
| Corporate mail servers | Often just 10 MB |
Anything over the limit either bounces or gets silently converted into a link that expires. If you want the video to arrive in the email, it has to be small.
How to compress a video for email on iPhone
- Get the app. Download Video Compressor and Resizer — free, 5.7 MB, works offline.
- Select the video you want to send from your Photos library.
- Choose size-focused settings. For email, set Max Resolution to 720p and Output Quality to Good. The app shows the estimated output size — aim under 20 MB to clear every provider's limit.
- Compress, then attach. Tap Compress; the small copy is saved to Photos. Attach it in Mail, Gmail, or Outlook like any other video.
Need to send that video right now? Compress it in under a minute.
Download Free on the App StoreWhat about Mail Drop, iCloud links, or Google Drive?
Cloud links work, but they have real downsides: links expire (Mail Drop after 30 days), recipients on corporate networks often can't open file-sharing sites, and the recipient must download a huge file. A compressed video arrives directly in the inbox, plays instantly, and never expires with the link.
Will the recipient notice the quality drop?
On a phone or laptop screen, 720p at a sensible bitrate looks crisp. Email videos are watched in small windows — the extra pixels of 4K are wasted there. If quality is critical, use 1080p and split the message into two emails instead. More on this in compressing without losing quality.