How to Send Encrypted Email Attachments Securely

You're about to email a signed contract to a client, a salary report to HR, or a patient record to a specialist. You know email isn't secure by default — but what's the alternative? Cloud links expire. Portals require accounts. And email is what everyone actually checks.

SendSplit delivers files up to 200MB as password-protected email attachments — no cloud storage, no shared links, no expiration dates. The file goes directly into the recipient's inbox. Only someone with the password can open it.

Why Regular Email Attachments Aren't Enough

Standard email is unencrypted in transit between servers, and once an attachment lands in an inbox, anyone with access to that account can open it. This creates real risk when sending:

• Legal documents — contracts, NDAs, litigation files, settlement agreements
• Financial records — payslips, tax documents, audit reports, bank statements
• Medical data — lab results, imaging reports, clinical notes, prescriptions
• HR files — performance reviews, termination letters, personal employee data
• Intellectual property — proprietary designs, source code, trade secrets

Sent items are stored on servers. Inboxes get forwarded. Accounts get compromised. The assumption that "email is private" is a risk you shouldn't take with sensitive files.

The Cloud Link Problem

The typical workaround — sharing a Google Drive or Dropbox link — introduces a different set of risks:

• Links can be forwarded to anyone, with no audit trail of who accessed the file
• Links don't expire unless you manually configure it — most people don't
• Files live on third-party servers, subject to that provider's data retention policies
• Recipients need accounts, or face confusing sign-in prompts before they can access the file
• No guaranteed delivery — cloud links get blocked by corporate firewalls or expire without notice

A password-protected email attachment avoids every one of these problems. The file is delivered directly. Only the recipient with the correct password can open it.

How SendSplit Sends Password-Protected Attachments

Encrypted Attachments vs. Cloud Links

The key advantage: the file itself is the protected unit. Even if the email is forwarded, even if the inbox is compromised, the file cannot be opened without the password.

Who Needs Encrypted Email Attachments?

• Lawyers and legal teams sending contracts, discovery packets, and privileged documents to clients or opposing counsel
• Accountants and finance professionals delivering tax returns, financial statements, and payroll reports
• HR departments emailing offer letters, performance reviews, and personal employee data
• Healthcare providers sharing lab results, radiology reports, and clinical files with referring physicians or patients
• Architects and engineers sending proprietary design files, building plans, and technical specifications
• Executives distributing board materials, M&A documents, and confidential strategy files

Best Practices for Sending Encrypted Attachments

• Never send the password in the same email — use a phone call, SMS, or a separate messaging channel. This ensures an intercepted email is useless without a second factor.
• Use a strong password — at least 12 characters, combining uppercase, lowercase, numbers, and symbols. Avoid names or dates.
• Choose the right split size — use 10MB or 20MB splits for recipients with strict corporate email limits, 25MB for general use.
• Confirm receipt — ask the recipient to acknowledge they received all parts and successfully extracted the file.
• Keep a log — for compliance purposes, note when you sent the file, to whom, what version, and what password policy was applied.

Stop sending sensitive files unprotected. Try SendSplit — deliver files up to 200MB as password-protected email attachments, directly into any inbox. No cloud links. No accounts required. Just secure, encrypted delivery.