The following tables list permitted or non-permitted e-mail programs for accessing your university e-mail account (in accordance with §5(d) of our user rules of the IT departments of Trier University of Applied Sciences). In particular, applications in which your personal login name and password are stored on the servers of third parties are not permitted. The following lists do not claim to be complete or up to date. If there is no information on your desired e-mail program, please ask in case of doubt: help@hochschule-trier.de.
| Application | Operating system | Protocol |
| Outlook (as part of Microsoft-Office) | Windows 10 / 11 | Exchange, IMAP |
| exchange.hochschule-trier.de (ehemals OWA) | All (Browser application) | Exchange |
| exchange.umwelt-campus.de | All (Browser application) | Exchange |
| Webmail Hochschule Trier | All (Browser application) | IMAP |
| Application | Operating System | Protocol |
| Mail App (Switch "The new Outlook" not activated!) | Windows 10 | Exchange, IMAP |
| Gmail App | Android | Exchange, IMAP |
| Apple Mail | iOS / macOS | Exchange, IMAP |
| Thunderbird | Windows / macOS / Linux | IMAP |
| KMail | Windows / Linux | Exchange, IMAP |
| Evolution | Linux | Exchange, IMAP |
| K-9 Mail | Android | IMAP |
| Samsung Mail | Android | Exchange, IMAP |
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