Your Shield Against Email Threats

Email Security (S/MIME) Certificates

VCANTech offers S/MIME certificates that provide secure email encryption and digital signatures to ensure confidentiality, integrity, and authenticity of email communications. These certificates encrypt messages using the recipient’s public key, allowing only the intended recipient to decrypt them. S/MIME certificates are compatible with major email applications like Microsoft Outlook, Apple Mail, and popular mobile operating systems. They cater to individuals, startups, small businesses, and enterprises, offering easy-to-use, multi-year plans to save time and money while securing emails.

How S/MIME Certificates Work


The message is encrypted using the recipient’s public key.Only the intended recipient’s private key can decrypt the message, guaranteeing that only they can read it.

Digital Signatures

A digital signature authenticates the sender and verifies that the email content or attachments haven’t been tampered with after it was signed.
Expert Solutions for Unmatched Email Protection

Features of Email Security (S/MIME) Certificates?

Choosing Email Security (S/MIME) Certificates is a crucial step in protecting sensitive information and maintaining the integrity of your communications. S/MIME certificates provide robust encryption, ensuring that your emails remain confidential and secure from unauthorized access.

End-to-end email encryption

End-to-end email encryption is an essential security measure designed to protect the contents of email messages throughout their entire journey from sender to recipient.

Digital signatures to prevent fraud

Digital signatures are a powerful tool in the fight against fraud, providing a reliable method for verifying the authenticity and integrity of electronic documents and communications.

Support for various email clients

In a diverse digital landscape, users and organizations often employ a variety of email clients such as Outlook, Gmail, Apple Mail, and Thunderbird, each with its own unique interface and set of functionalities.

Microsoft Office file signing capabilities

Microsoft Office offers robust file signing capabilities, allowing users to digitally sign documents for authentication and security purposes. Through digital signatures, users can verify the integrity and origin of a document, ensuring that it has not been tampered with and originates from a trusted source.

Expert Solutions for Unmatched Email Protection

Benefits of S/MIME Certificates

Choosing Email Security (S/MIME) Certificates is a crucial step in protecting sensitive information and maintaining the integrity of your communications. S/MIME certificates provide robust encryption, ensuring that your emails remain confidential and secure from unauthorized access.

Verify Email Authenticity

Confirm emails and signed messages originated from the intended sender.

Protect Against Attacks

Shield your business from phishing, malware,and Business Email Compromise (BEC) attacks.

Widespread Compatibility

S/MIME certificates work with all major email providers and applications,including Microsoft Outlook (web and desktop versions), Exchange,Gmail,popular mobile operating systems, and more.

Requirements and Issuance with Additional Information

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What is S/MIME?

S/MIME stands for Secure/Multipurpose Internet Mail Extensions. It's a standard for securely sending and receiving emails using digital signatures and encryption.

What is an S/MIME certificate?
An S/MIME certificate is a digital certificate used to authenticate the identity of an email sender and encrypt email content. It contains information such as the email address of the user, their public key, and information about the Certificate Authority (CA) that issued the certificate.
How does S/MIME work?
S/MIME works by using asymmetric encryption techniques. The sender's email client uses the recipient's public key to encrypt the email message. The recipient's email client then uses their private key to decrypt the message. Digital signatures are created using the sender's private key and can be verified using their public key.
Where can I get an S/MIME certificate?
S/MIME certificates can be obtained from trusted Certificate Authorities (CAs) or through internal certificate authorities within an organization. Many CAs offer S/MIME certificates for purchase, and some may provide them as part of a broader certificate package.
How long is an S/MIME certificate valid?
The validity period of an S/MIME certificate can vary depending on the issuing Certificate Authority and the certificate type. Typically, S/MIME certificates are valid for one to three years, after which they need to be renewed.
Do both the sender and recipient need S/MIME certificates?
While it's not strictly necessary for both the sender and recipient to have S/MIME certificates, the full benefits of S/MIME encryption and digital signatures are realized when both parties have certificates. However, even if the recipient doesn't have an S/MIME certificate, the sender can still digitally sign the email for authenticity.
Can S/MIME certificates be used for document signing?
While S/MIME certificates are primarily used for securing email communications, they can also be used for digitally signing documents, including Microsoft Office files and PDFs. This allows users to verify the authenticity and integrity of electronically signed documents.
Are S/MIME certificates compatible with all email clients?
Most modern email clients support S/MIME encryption and digital signatures, including Outlook, Thunderbird, Apple Mail, and various mobile email apps. However, compatibility may vary, and some clients may require additional configuration to work with S/MIME certificates.
Can S/MIME certificates be revoked?
Yes, S/MIME certificates can be revoked if they are compromised or if the user's email address changes. Certificate Authorities maintain Certificate Revocation Lists (CRLs) or use Online Certificate Status Protocol (OCSP) to revoke certificates before their expiration date if necessary.