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Email Encryption

Avoid compliance issues and send confidential data with confidence. Get CipherPost Pro™ from AppRiver and experience true user-to-user encryption with just one click.

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Email that keeps you in control.

Email can travel a long way before it hits your inbox. With CipherPost Pro™ from AppRiver, you'll avoid prying eyes along the way. With one click, CipherPost Pro encrypts your message when it leaves your mailbox. Only the authorized recipient - with the proper password - can read the message.

Other services protect your message only from one server to another. Access to the server means access to your private information. CipherPost Pro gives you true mailbox-to-mailbox security, no matter where your email goes in between. That keeps your confidential information safe and helps your business remain compliant.

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Features & Benefits

Encrypt your mail with just one click.

CipherPost Pro is genuine end-to-end email encryption from AppRiver, protecting your message from outbox to inbox and all points in between.

Features of CipherPost Pro™

  • Secure, fast and easy to use
  • Protects confidential information and helps ensure regulatory compliance
  • Provides delivery slip and registered mail options
  • Features centralized management and reporting
  • Enables large file attachment encryption and delivery
  • Includes Outlook plug-in, Windows and Mac desktop agents, browser plug-ins
  • Full-featured functionality for mobile devices including iPhones, iPads, BlackBerry, Windows Phone, Android and more
  • Includes Phenomenal Care™ from our US-based team, 24 hours a day, every day

AppRiver's Phenomenal Sales advisors can provide information on which features are available with each CipherPost Pro service. Contact sales@appriver.com for more information.

How Does It Work?


CipherPost Pro™ protects your messages even when a secure connection like TLS isn't available. If you do have TLS, AppRiver's CipherPost Products provide an additional layer of security with true mailbox-to-mailbox encryption.

CipherPost Pro Guides


Some Questions We've Heard

Can I send a secure message to anybody?

Yes, if you are a CipherPost Pro subscriber. When you send a secure message outside of your organization each recipient will be able to login to the Secure Messaging center to read, reply, and in some cases create new messages to CipherPost Pro subscribers who have communicated with you before.

Can I attach files to secure messages?

Yes. File attachments are transferred via HTTPS through the use of your Secure Messaging Platform instead of across regular SMTP connections, unreliable FTP or unsecure third party websites, which are very limited in security, speed and size limit.

Using the Secure Messaging Platform to exchange file attachments is safer, allows for up to 5GB size file transfer, is trackable and auditable, and so it becomes easier to manage each file attachment, directly in the Secure Message Center's Attachment Library, or directly in MS Outlook.

Can I continue to use my existing Email Address?

Yes. CipherPost Pro allows you to continue using your existing email address, email address aliases, email client, and server infrastructure. You can even integrate CipherPost Pro seamlessly in Outlook using the Secure MS Outlook Toolbar.

If you use a different email program, you have full access to all of your secure messages by using the Secure Message Center (Webmail).

Do all our email accounts need to be enabled to get started?

No, only the employees that need to communicate securely need to be enabled.

Will email be automatically encrypted if we send out secure information, or must we manually encrypt it?

Yes. With data-leak prevention (DLP) rules enabled, CipherPost Pro can automatically encrypt information like Social Security, credit card or account numbers.

If the recipient forwards an encrypted message, will it remain encrypted?

Yes. Once an email has been encrypted, the entire thread will continue to be encrypted.

Is there a limit to the number of encrypted emails I can send per month?


Is there a way to set it to encrypt all emails to certain recipients?

Currently, no.

Can you encrypt imbedded images in your emails?

No, images must be attached.

If I encounter an issue or have any feedback who should I contact?

You can reach our support team anytime at 866-223-4645 or you can create a ticket by submitting an email to encryption@appriver.com, or you can use our web form.

Get Started

Let's Talk

Call Us 7am-7pm (CST) Mon - Fri

  • Phone: 850-932-5338
  • Toll-free: 866-223-4645

Let Us Call You! We just need some basic information, then we'll give you a call after the weekend to start your free trial.

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Personal information provided by individuals will remain confidential to AppRiver. Any personal data collected will be used in accordance to our Privacy Policy.
This means we won’t sell your information.