Get your video attachments under the Yahoo Mail limit

Yahoo's limit is about the whole message, not about a single file. Three attachments that are each small can add up to a refusal, and the same limit applies to mail you receive, so a big attachment can fail on the way in as well as on the way out. This page is about getting the total down, not just one file.

Why Yahoo Mail has this limit

Yahoo's help page states the limit but not the reasoning: the sum of all attached files in a single message, incoming and outgoing, must not exceed it. As with every email provider, attachments travel encoded and become larger in transit, which is why FitSize aims below the number on the page.

Our reasoning, from help.yahoo.com , proton.me

What FitSize does with your file

Yahoo adds up every attachment in the message, so FitSize's target is for the total, not per file: if you are sending several files, compress them to a shared budget rather than one at a time. The target leaves room for encoding, and the page shows you the real usable size.

Best fit for a 30-second clip at 18.1 MB: 720p at Balanced quality (that resolution holds up to 59 s). Best fit for a 2-minute clip at 18.1 MB: 480p at Balanced quality (that resolution holds up to 2 min 05 s).

Your file never leaves your device. It is read and compressed by your browser, and nothing is uploaded to a server.

Three things to watch on Yahoo Mail