You hit "send" and the email bounces back: attachment too large. Every email provider caps attachment size, and the limits are smaller than most people expect. Here are the real numbers for 2026 — and what to do when your file is over the line.
Email was never designed to move files. Attachments are Base64-encoded, which inflates them by roughly 33%. A "25MB limit" often means your real file ceiling is closer to 18MB. Mail servers along the delivery path also enforce their own limits — even if your provider accepts a file, the recipient's server may reject it.
Instead of attaching the file, upload it once and paste a download link into your email. The email stays tiny, delivers instantly, and works regardless of the recipient's provider limits.
With fff files, this takes seconds: drag the file onto the page, copy the link, paste it into your email. No account, no software, files up to 250MB. The recipient clicks the link and downloads — no login required on their end either.
Emailed attachments live in the recipient's inbox forever. A link to a file that auto-deletes after its retention window means sensitive documents don't pile up in someone else's mailbox indefinitely.