Videos recorded on iOS device are far too large to be attached to emails, Gmail, Hotmail, Yahoo mail or else. Compressing a video for an email has always been a challenge for iPhone iPad users. If you want to trim a few seconds from a longer video clip o iPhone, you can perform the edit of video length directly in your Camera Roll. This method can’t transcode the video at lower resolution and/or lower bit rates. You just split the long video into short ones without compression or quality loss. When attaching a video to email, the Mail app on iOS device will automatically compress video by reducing lower resolution and lower bit rates, just like how you can resize or compress photos on iPhone iPad. This however will limit the video length under 60 seconds. If you have a video clip more than a minute, it will error out:
Video Too Long to Send
Please select a smaller clip from this video.
How to compress videos for email on iPhone and bypass the iPhone video email limit, please read on.
Shrink iPhone iPad video to email using Video Compress
To compress a large video file efficiently to email in attachment, you need a professional video editor. Video Compress is a free video compressor for iPhone.
It is very intuitive and straightforward to reduce video size. Just add your video to the app, specify the target size, and compress.

Then save the compressed video to your Camera Roll, send it through email, share it in your social networks or any app you love.