Why every mail provider stops at 25 MB
Gmail, Outlook.com and iCloud Mail all set their attachment ceiling around 25 MB. Corporate Exchange, Office 365 and Google Workspace default to the same value (though your IT team can raise it, which is rare in practice). The limit isn't arbitrary — email was never designed to carry heavy binary payloads. Every server between you and your recipient has to store, scan, virus-check and forward the whole attachment; a 200 MB video multiplied by a mailing list quickly becomes a real infrastructure cost. That's why providers uniformly cap at 25 MB, and why hitting « send » on a 40 MB video attachment gives you an instant rejection message — sometimes with a « send via Google Drive » or « OneDrive » link that helpfully pushes your video to a cloud you may not want to use. Vidzipo does the other thing: it compresses the file down to 24 MB (with a 1 MB buffer under the ceiling), keeps it as a regular MP4 attachment, and lets your recipient download it directly from the email as they always have.
Stays a real attachment, not a cloud link
Sending a Drive or OneDrive link solves the size problem but creates two new ones. First, the recipient has to click, wait for a preview to load, potentially sign in — a barrier that some people (grandparents, distant colleagues, non-technical contacts) will simply refuse. Second, the video is now hosted in a place with its own retention policy, access log and shareable-URL surface. A relative who forwards the email accidentally forwards the link too. A compressed MP4 attached to the email doesn't have that problem: it lives in the recipient's inbox, gets archived with the message, and never spawns unexpected shares. It's the traditional way to send a video and — with a bit of compression — still the simplest for everyone involved.
Your file never touches our servers
The whole compression runs in your browser via a WebAssembly build of FFmpeg. When you drop a video onto Vidzipo, nothing is uploaded — the file stays on your device from start to finish. No cache, no temporary storage, no server-side log that references your content. That matters for work emails (a screen recording that shows internal information, a client demo, a HR video) and for personal ones (a private moment, a health-related clip, a legal document). It also matters for regulatory reasons: sending a video via a cloud converter typically counts as sharing it with a third-party processor, which some organisations forbid outright. Vidzipo dodges the question — nothing is shared with anyone but the browser you already trust.
What happens when the video is 20 minutes long
The 25 MB ceiling forces trade-offs on long clips. A 20-minute recording can only fit at reasonable quality if the resolution drops sharply — Vidzipo will typically encode a long clip at 480p or 360p to make 25 MB work. That's fine for content where the story matters more than the pixel-for-pixel detail (a lecture, a family reunion, a training video), but noticeably softer than a phone can display. If your clip is longer than ten minutes and you want to keep 720p, the honest answer is that email might not be the right channel — a proper file transfer (or a document management system) will treat the content better. In those cases, use the « Reduce MP4 file size » preset instead: it targets a comfortable compromise without pushing the resolution down as aggressively.