Filter out emails that exceed a specific file size limit.
Steps
-
E-mail Manager → SPAM Filters
-
Block By: Select "Size"
-
Choose unit: KB or MB
-
Enter maximum size number
-
Click Block
Size Examples
| Setting | Blocks Emails Over | Good For |
|---|---|---|
| 1 MB | 1 megabyte | Text-only environments |
| 5 MB | 5 megabytes | Small attachments OK |
| 10 MB | 10 megabytes | Most business needs |
| 500 KB | 0.5 megabyte | Very restrictive |
Common Attachment Sizes
- Word document: 50-500 KB
- PDF file: 100 KB - 5 MB
- Photo (compressed): 200 KB - 2 MB
- Photo (original): 2-10 MB
- PowerPoint: 1-20 MB
When to Use
- Prevent mailbox quota issues
- Block suspicious large attachments
- Mobile data concerns
- Slow internet connections
Common Issues
Missing legitimate emails
- Check with senders about file sizes
- Increase limit or remove filter
- Use cloud storage links instead
Still receiving large emails
- Verify filter is active
- Size might be just under limit
- Email size includes headers and encoding (add 30% buffer)
