Secure S/MIME Email Certificates

Provides end-to-end encryption of emailsDigitally sign emails to prevent email fraudSupported by Microsoft Outlook, Apple Mail and other popular email clientsEnables digitally signing Microsoft Office documents (docx, pptx, xlsx, etc.) Validates only email addressesFree online, phone, email and chat support

Digitally Sign and Encrypt Emails

Secure your email by digitally signing and encrypting communications with our Email certificates, also called Personal ID certificates

Plans & Pricing

Sectigo S/MIME Email Encryption
Personal Authentication



Sectigo S/MIME Email Encryption
Personal Authentication Pro



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Secure Email Encryption Solutions

Security, confidentiality, and integrity are ensured through the use of encryption and digital signatures. Encrypting the message with the S/MIME certificate uses the recipient's public key, and decrypting it with the intended recipient's private key is possible only with the recipient's private key. In this way, the sender can be sure that the signed email message will only be read by the intended recipient, and the recipient can verify the integrity and claimed origin of the message.

Secure email communications and message integrity are essential for both businesses and individuals. Our S/MIME email certificate options can be customized to suit the needs of any individual, startup, small business, or enterprise.

The requirements and issuance of certificates

Using S/MIME email certificates, enterprises are able to protect their email users and infrastructure from many of today's attacks. When ordering and receiving your Sectigo S/MIME certificate, there are certain steps to follow in order to enable this authentication process.

System requirements

A desktop or laptop computer is recommended for collecting your email signing certificate (as opposed to a mobile phone or tablet).

Certificates can be ordered using any modern browser, such as Firefox, Edge, Chrome, Opera, or Safari.

Use the same system for ordering and collecting the certificate in pkcs12 format. The private key is stored in the Crypto store of the machine from which the order was placed. The PKCS 12 file is protected using a password and can be transferred securely to other systems.


When ordering a Sectigo secure email certificate, you must submit a Certificate Signing Request (CSR).

A CSR (PKCS#10) is a standardized way to request signed certificates from a certificate authority. A CSR is a file that contains the public key of the subject of the certificate along with other certificate attributes like Subject Name, Public Key Algorithm, etc.

You can submit a CSR that you created yourself, or it can be generated for you on the Sectigo website during the order process.

Order Overview

The process for ordering and collecting your certificate has four stages:

Once the order is submitted, it is validated by Sectigo. While it is being validated, the order status is Pending.

An order confirmation email will be sent to your registered email address, where you can use the Validation Manager button to check the status of your order.

Once the order has been approved, its status will change to Active. You can proceed to create the certificate request.


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