How to Send a Large PDF by Email
Email providers have attachment size limits — and PDF files from scans, Canva exports, or presentations can easily exceed them. This guide covers the limits for every major provider, how to compress your PDF to fit, and what to do when even a compressed file is still too large to attach directly.
Email Attachment Limits by Provider
| Email Provider | Attachment Limit | Recommended PDF Size |
|---|---|---|
| Gmail | 25MB | Under 15MB |
| Outlook / Hotmail | 20MB | Under 12MB |
| Yahoo Mail | 25MB | Under 15MB |
| Apple Mail (iCloud) | 20MB | Under 12MB |
| Corporate email (Exchange) | 10MB–20MB (set by IT) | Under 8MB |
| Government / institutional email | 5MB–10MB | Under 4MB |
Even if your Gmail allows 25MB outgoing, the recipient's mail server may only accept 10MB. Corporate and government email servers commonly have lower limits. For important emails, aim for under 10MB to ensure reliable delivery.
Step 1 — Compress the PDF First
Before trying any workaround, compress the PDF. Most PDFs compress to 20–80% of their original size, which is often enough to fit within email limits.
Open ShrinkPDF
Go to shrinkpdf.fyi on your phone or computer.
Upload and Compress
Upload your PDF. Choose Balanced for documents with important images. Choose Maximum for scanned documents or text-heavy files. Download the compressed PDF.
Check the New File Size
Right-click the downloaded file → Properties (Windows) or Get Info (Mac) to see the new size. If it's now under 10MB, attach it to your email and send normally.
Step 2 — Still Too Large? Share a Link Instead
If the PDF is still too large after compression — typically large portfolios, multi-chapter reports, or high-resolution brochures — share it via a cloud link instead of attaching it directly.
Google Drive (recommended for Gmail users)
- Upload the PDF to Google Drive (drive.google.com)
- Right-click the file → Share → Get link
- Set access to Anyone with the link
- Copy the link and paste it into your email body
Gmail even detects large attachments automatically and offers to upload to Drive and insert a link — you'll see a prompt when you try to attach a file over 25MB.
Outlook OneDrive (for Outlook users)
- When attaching in Outlook, click the paperclip → Browse cloud locations → OneDrive
- Upload the PDF to OneDrive first, then select it
- Outlook inserts a sharing link automatically
Dropbox / WeTransfer
Upload to Dropbox and share a link, or use WeTransfer (wetransfer.com) for a simple link-based transfer without needing a cloud account. WeTransfer free tier allows up to 2GB per transfer.
Step 3 — Split Into Parts
If the recipient specifically needs the PDF as a file attachment (not a link), and it's still too large after compression, split it into smaller parts using ShrinkPDF's Split tool. Send each part as a separate email with clear labelling (e.g. "Report Q1 2026 — Part 1 of 3").
✓ Compress Your PDF Before Sending
Most PDFs compress to under 5MB — small enough to attach to any email.
🗜️ Compress My PDF Now