The attachment limit is smaller than it looks
Email providers cap the total size of a message. A commonly seen limit is around 25 MB, but the exact number depends on the provider and on the recipient’s server, so check yours.
Attachments are also encoded for transport, which makes them roughly a third larger than the file on your disk. A file that looks comfortably under the limit can still be refused. Aim well below it: for a limit of 25 MB, a video of about 15 to 18 MB is a safer target. Use the Custom option for that.
Shrink the video
- Open the email video compressor and drop your file in. Nothing is uploaded.
- Choose Custom and enter a size a little under your limit, or pick the email preset if your limit is generous.
- Trim anything the recipient does not need to see.
- Compress, download the MP4, and attach it. MP4 with H.264 video plays in nearly every mail client and phone.
If the video is long
A one hour recording cannot be made small and sharp at the same time. In that case, share a link instead: upload the original to a cloud storage service you already use and send the link. For a middle path, cut the video into the parts the recipient really needs.
Tips for the recipient
- Name the file clearly so it is recognizable in a crowded inbox.
- Mention the length and what to look for in the email body.
- If you are sending to a company, ask whether they prefer a download link, because some mail systems strip or block video attachments.