Sending five separate attachments in one email is messy, and some email providers cap how many files you can attach at once. Zipping them into a single file solves both problems in one step.
When This Comes Up
- Sending a batch of invoices, receipts, or contracts to a client or accountant
- Uploading multiple files to a form that only accepts one attachment
- Archiving a project's files into one downloadable package
Example: How Much Space It Actually Saves
A folder of 12 scanned invoice PDFs at around 3.5 MB each totals roughly 42 MB. Compressed into a ZIP, text-heavy PDFs like these typically shrink by 20–35%, landing the archive around 28–33 MB — enough to matter if you're working against an email attachment limit.
How to Create a ZIP File Online
- Upload the files you want to combine to a free online ZIP tool.
- Select all the files that should go into the archive.
- Create the ZIP and download it as a single file.
- Rename it something clear before sending — "Invoices_September.zip" is more useful to the recipient than the tool's default filename.
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