for testing purposes and also for external users e. g. suppliers I want to create a account in openproject and use my own email address for these users.
But if I try to use my email address for more than one user I get the error message “Email has already been taken.”
Is it possible to use the same email address for more than one user?

Hi Claudio,

the trick is to add a suffix such as:

claudio.fischer+user1@gmail.org

Best
Niels

sorry, cant get this to work. Can you provide some details?

1) I created a user “testuser”.
2) gave the “testuser” a second email address of mine to verify email is working
=> got mail at changing task for testuser, so mail is working.
3) now where and how do I have to use the suffix? Is the suffix the name of the user?
I tried claudio.fischer+testuser@“mymail.com” => this didnt work

Hi Claudio,

you can do this:

1. Create user accounts for the external users / suppliers and fill out all the information (except for the email).
2. Then - before you click “Create” - add your own email address (in the email field) but modify it so that right before the “@” sign you add a “+” sign followed by some random characters.

Here is an example (let’s say your actual email is claudio.fischer@test.com):

User 1 (actual account):
User name: Claudio
Email: claudio.fischer@test.com

User 2 (test user):
User name: Supplier1
Email: claudio.fischer+test1@test.com

User 3 (test user)
User name: Supplier2
Email: claudio.fischer+test2@test.com

etc.

The key is that OpenProject accepts these suffixes as being different from your email address (in the example claudio.fischer@test.com) but your email provider ignores these and still sends emails to e.g. claudio.fischer+test1@test.com to claudio.fischer@test.com.

Best,
Robin

thanks Robin,

your explanation just describes what I have already tested.

The feature using the plus sign in email addresses is called sub-addressing or plus-addressing.
Would have helped if these words were used ;-)

But in my local installation of OpenProject this approach is still not working.
And guess why? Our IT is using a Microsoft exchange server.
And exchange server does not support this feature :-(