Email Client Fragmentation
Email remains the most critical communication and marketing channel on the planet. Yet email clients (such as Microsoft Outlook, Apple Mail, Gmail, and Yahoo) rely on notoriously fragmented rendering engines.
Why Camera RAW Fails in Email
Attempting to send unprocessed camera raw files (such as Canon CR3, Nikon NEF, or Sony ARW) as email attachments will inevitably lead to frustration. Email clients cannot render proprietary RAW formats inline, and email providers enforce strict 20 MB to 25 MB attachment caps.
If your images were captured on Canon cameras, convert CR3 to JPG using Web quality (80) before attaching them. This ensures recipients on both desktop and mobile can view your photos instantly without special RAW viewer software.
Best Formats for Email Use
- JPEG: Best for photographs, headshots, and complex color images.
- PNG: Best for logos, text screenshots, and graphics requiring transparent backgrounds.
- GIF: Best for short, looped animated demonstrations where supported.
Attachment Size Guidelines
Keep individual attached images under 5 MB and total email payloads under 10 MB to prevent corporate firewalls and spam filters from rejecting delivery.