Macao Post and Telecommunications eSignTrust Certification Services is now under user supervision according to Performance Pledge

Holiday Notice of eSignTrust Registration Authority of Division of Electronic Certification Services

CTT Macau launches the Appointment Booking Service for “Online Reservation for Registration of...

Notice on Suspension of Western Union Money Transfer Service through CTT eSignTrust

Thematic Pack – “Environmental Protection”

New Stamps – “Chinese White Dolphin”

New Stamps – “Thangka – Seven Buddhas of the Past”

“Macao Post” is renamed “Macao Post and Telecommunications Bureau”

Suggestions on Framework for the Mutual Recognition of E-Certificates Issued by Macau & Guangdong

eSignTrust offers a promotion on VeriSign SSL Certificates and VeriSign Code Signing Certificates

Notice - Restoration of Service at Registration Office

Macao Post eSignTrust is now launching Performance Pledge

Offer to Macao Residents

Since 23/01/2006
Secure E-mail Certificate

An eSignTrust Secure E-Mail Certificate allows you to secure your e-mail communications by digitally signing and/or encrypting your e-mails. By securing your personal e-mail with this certificate, you ensure the safety of all your outbound e-mail communication and those communicating with you will be able to verify that mail coming from your e-mail address is in fact from your e-mail address.

Benefits of the Secure E-Mail Certificate

  • Sign your e-mail communications so that people know the mail came from your e-mail address;
  • Encrypt your e-mail communications to prevent unauthorized people from reading them;
  • Authenticate your identity to some web servers;
  • Easy to enroll and obtain a certificates.

Pricing and Assurance / Liability Limits


Pricing (MOP)


Assurance / Liability Limits (MOP)


Secure Email Certificate




Above amount is subject to change without any notice.

How to apply a Personal E-Mail Certificate

Secure E-Mail Certificate Application procedures are conveniently performed online, following the instructions shown below:

  • For this type of Certificates, there is no need to present any proof of identification;
  • The customer first, needs to obtain an eSignTrust Secure E-Mail proof-of-purchase voucher at our Registration Authority (RA) Office or any Macao Post and Telecommunications Branch Offices;
  • Using the special code on the voucher, the customer will apply (enroll) for the Certificate online, at this site.
  • After submitting the application, the customer will receive an e-mail with instructions on how to get and install the Certificate on his/her personal computer.

To get additional information about applying for the Certificate please phone or go directly to our Registration Authority (RA) Office located in the address shown below:

eSignTrust Registration Authority
Division of Electronic Certification Services
Macao Post and Telecommunications Bureau
Avenida da Praia Grande no. 789, R/C

Tel: +853 2833 0338
Fax: +853 8299 5515


Business Hours:
Monday to Thursday:
9:00am - 7:00pm
9:00am - 6:00pm

Certificate Policy and Certification Practice Statement

A clear and concise description of the applicability of eSignTrust Certificates is provided in the Macao Post and Telecommunications eSignTrust Certificate Policy. To know more about our practices in issuing Certificates, please read our Certification Practice Statement (CPS).

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