Yes, electronic documents and electronic signatures have legal validity in Mexico under the Electronic Signature Law and the Federal Civil Code. As long as they meet basic standards of authenticity and integrity, they are valid evidence.

Robust evidence includes multiple verification elements: identity validation, certified time stamps, GPS location, photographs, and integrity protection against modification. Adequate evidence might include some but not all of these elements. The more elements you have, the harder it is to challenge your evidence.

For commercial operations, we recommend minimum 5 years, which covers most commercial prescription periods in Mexico. For high-value transactions or industries with specific regulations, longer retention may be necessary. Your cloud storage provider should offer indefinite retention with proper backup systems.

No. Evidence must be created at the time of the event. You cannot create valid evidence for something that happened in the past. This is why implementing documentation systems now is critical for future protection.

Every business should have documented evidence for: deliveries of goods or services, receipts of equipment from suppliers, acceptance of work by clients, approvals of quotes or estimates, and any agreement that involves money or valuable consideration. If money changes hands or responsibility transfers, you need evidence.