Digital Signatures and Strong Encryption for Emails
S/MIME (Secure Multipurpose Internet Mail Extensions) is a standard for public key encryption and signing of MIME data.Through encryption and the use of digital signatures, S/MIME helps to protect users from email-related threats and increase email security. Digitally signed emails help against spoofing and phishing attacks – the sender’s identity is clearly visible to the recipients to protect them from any fake emails.
Secure your business communication today with a trusted S/MIME email certificate!






Certum Email ID Individual
From AU$23/yr
for a 3-year certificate
S/MIME EMail Certificate
for Individuals- 1 year: AU$28
- 2 years: AU$26/yr
- 3 years: AU$23/yr
- Class 1 S/MIME EMail Certificate
- Sign & Encrypt Emails
- Validation of EMail Address
- Issued instantly
- 15 day Refund Policy
Certum EMail ID Business
From AU$65/yr
for a 3-year certificate
S/MIME EMail Certificate
for Professionals- 1 year: AU$85
- 2 years: AU$75/yr
- 3 years: AU$65/yr
- Class 2 S/MIME EMail Certificate
- Sign & Encrypt Emails
- Validation of EMail Address
- + First Name & Family Name
- Paperwork required
- 15 day Refund Policy
Certum EMail ID Enterprise
From AU$85/yr
for a 3-year certificate
S/MIME EMail Certificate
for Organizations- 1 year: AU$99
- 2 years: AU$94/yr
- 3 years: AU$85/yr
- Class 3 S/MIME EMail Certificate
- Sign & Encrypt Emails
- Validation of EMail Address
- + First Name & Family Name
- + Full Business Validation
- Paperwork required
- 15 day Refund Policy
DigiCert S/MIME Basic
From AU$25/yr
for a 3-year certificate
S/MIME EMail Certificate
for Individuals- 1 year: AU$29
- 2 years: AU$27/yr
- 3 years: AU$25/yr
- Class 1 S/MIME EMail Certificate
- Sign & Encrypt Emails
- Validation of EMail Address
- Issued instantly
- 15 day Refund Policy
DigiCert S/MIME Business
From AU$99/yr
for a 3-year certificate
S/MIME EMail Certificate
for Organizations- 1 year: AU$119
- 2 years: AU$109/yr
- 3 years: AU$99/yr
- Class 3 S/MIME EMail Certificate
- Sign & Encrypt Emails
- Validation of EMail Address
- + First Name & Family Name
- + Full Business Validation
- Paperwork required
- 15 day Refund Policy