Every major email service caps attachments at 20-25MB. A single minute of 4K video is 400MB+. Here's how to send any video file — any size — in seconds, wirelessly, for free.
No email provider will let you attach a large video. Their limits haven't meaningfully increased in years:
| Service | Attachment limit |
|---|---|
| Gmail | 25 MB |
| Outlook | 20 MB |
| Yahoo Mail | 25 MB |
| iCloud Mail | 20 MB |
| Seyfr | No limit |
For context: a 1-minute 4K video from an iPhone records at about 400MB. A single 4K YouTube export is typically 1–5GB. A 10-minute Android 4K video is 2–6GB. Email is simply not the right tool for video.
Seyfr transfers files directly between devices over Wi-Fi — no upload, no email, no cloud. A 4GB video that would take 30 minutes to upload to Google Drive and email as a link transfers in under 4 minutes over local Wi-Fi.
Install Seyfr (free) on your Android phone or iPhone. A QR code appears immediately.
On the receiving device (PC, Mac, another phone) — open any browser or camera app and scan the QR code. No app install needed on the receiving side.
Select the video file. It transfers directly at full Wi-Fi speed — no upload to any server. The video arrives at full quality, zero compression.
| Method | Size Limit | Quality | Speed | Cost |
|---|---|---|---|---|
| Seyfr (Wi-Fi) | No limit | Zero compression | Wi-Fi speed | Free |
| Gmail (Google Drive link) | 15 GB (Drive) | Full quality | slow Upload + download | Free (15GB) |
| 16 MB video | Compressed | Medium | Free | |
| Telegram | 2 GB | Full quality | Medium (upload) | Free |
| WeTransfer | 2 GB free / 200 GB paid | Full quality | slow Upload + download | Free / $12/mo |
| iCloud Drive link | 5 GB free | Full quality | slow Upload + download | $0.99/mo+ |
| AirDrop | No limit | Full quality | Wi-Fi speed | Apple only |
| USB cable | No limit | Full quality | Fast | Free but needs cable |
| Bluetooth | No practical limit | Full quality | slow Very slow | Free |
Android to Mac is the hardest combination — Android File Transfer doesn't support it reliably, and AirDrop only works with Apple devices. Seyfr solves this completely:
Transfer speed on a 300Mbps home Wi-Fi: about 1GB every 30 seconds, or 4GB in ~2 minutes.
iPhone records video in HEVC (H.265) which is very efficient — but 4K Cinematic Mode videos from iPhone 16 Pro still reach 3-6GB for a 3-minute clip. AirDrop is the native option but requires both devices. Seyfr is the best alternative:
iPhone to Windows is harder than iPhone to Mac because Windows has no AirDrop. iTunes is the traditional option but it's slow and cumbersome. Seyfr:
Works on Windows 10 and Windows 11 with any browser — Edge, Chrome, or Firefox.
Android to PC via USB requires drivers and MTP protocol which often fails. Seyfr does it wirelessly:
WhatsApp compresses videos to reduce file size before sending. A 4K video sent via WhatsApp arrives as a blurry 720p or 480p clip. The original file is destroyed. You'll also hit WhatsApp's 16MB video limit before you even get to full-length clips.
Seyfr sends the original file — byte for byte — with zero processing. What you recorded is what arrives.
No email limit. No cloud upload. No compression. Just Wi-Fi speed.
Gmail's attachment limit is 25MB. Files larger than 25MB are automatically converted to Google Drive links. However, Google Drive links require a Google account on both ends and use your Drive storage quota (15GB free). For large videos, use Seyfr instead — no account, no storage limit, no internet upload required.
Use Seyfr to transfer the video directly to the other person's device over Wi-Fi. If you need to share with someone far away (not on the same network), use Telegram (2GB limit, free) or Google Drive (15GB free storage). For local transfers, Seyfr is always the fastest option.
No. Seyfr sends files bit-for-bit identical. Your 4K ProRes video, your RAW footage, your lossless audio — all arrive at exactly the quality you recorded. Nothing is compressed, re-encoded, or reduced.
Transfer speed depends on your Wi-Fi network. On a typical 300Mbps home Wi-Fi, Seyfr transfers about 1GB every 30 seconds. On faster networks (Wi-Fi 6, 1Gbps), speeds are proportionally faster. A 10GB file transfers in about 5 minutes on a good network.
Yes. Seyfr transfers over your local Wi-Fi network. No internet connection is required for the file transfer itself. This also makes it faster — you're not limited by your upload/download speed to the internet.