Instituto Superior Técnico

Serviços de Informática


The e-mail service is available to all the Técnico community. It can be used by anyone who has a Técnico ID, is built on dedicated infrastructure and is the only personal email service supported. The individual use of other email services is possible but the DSI will not provide support for those.

On first activating the mail service, in the self-service web page, you will have to choose a personal email address. By default the address will have the form “”, based on your name but with some freedom of choice to choose from. Alert: the address never uses the form “”.

Eash user’s mailbox is provided with 5 Gigabyte of initial quota space, anti-spam and anti-virus filters for your protection. Users are allowed to pick any favourite e-mail client (i.e. Webmail, Outlook, Thunderbird,, etc).

Important information about the e-mail service:

The email service at Técnico, like email systems at other institutions, implements several checks against spam, forged emails, and phishing attempts. These are checks that have gradually made more strict and may lead to the rejection of misconfigured emails. Therefore we strongly recommend our users to bear in mind the following alerts when configuring the service:

Using the email system:

There is a webmail service available, which is the simplest way to use the mail service. Authentication is done using the Técnico ID credentials in the Webmail page. It is possible to send and receive encrypted messages in webmail using the browser plugin Mailvelope.

Should you wish to use a dedicated email client software the generic configuration for receiving email is:

Server name
Connection security SSL/TLS
Port 993
Authentication method Password (normal)
Username (for authentication) istxxxxx (your Técnico ID)
Password your Técnico ID password
Email address

And for sending email:

Server name
Connection security SSL/TLS
Port 465
Authentication method Password (normal)
Username (for authentication) istxxxxx (your Técnico ID)
Password your Técnico ID password

In the FAQs article it is possible to know:

  • How can I get an IST e-mail account?
  • How to configure an absent auto-reply message using the Webmail service?
  • What is the maximum size of a message in IST’s mail service?
  • What types of files can be sent attachments in e-mail?
  • How can I mark an e-mail address as SPAM in Técnico’s webmail?
  • How can I get a mailing list for a unit, department, project, service or event?
  • What limits do I have on the number of emails I can send?

E-mail client configuration instructions: