diff --git a/_posts/2022/2022-07-29-hifis-rsd.md b/_posts/2022/2022-07-29-hifis-rsd.md
index b49ed3867d55a25fba355ae66698cd99f330638d..7f792eb7ce86ff02202af815d9af40e4cba0fe92 100644
--- a/_posts/2022/2022-07-29-hifis-rsd.md
+++ b/_posts/2022/2022-07-29-hifis-rsd.md
@@ -37,7 +37,7 @@ For the beginning of the test phase, we have added the [Software Spotlights]({{
 
 In the upcoming months, the Software Spotlights will be entirely moved to the RSD, and we will enable login for all members of the Helmholtz association.
 It is envisioned to add the service to the [Helmholtz Cloud](https://helmholtz.cloud/services). Features and enhancements are planned to be added as well.
-Currently only test users are be able to login to the RSD. **Are you interested to participate in the test phase?** [Send us a message](mailto:support@hifis.net), and we will come back to you shortly.
+Currently only test users are be able to login to the RSD. **Are you interested to participate in the test phase?** [Send us a message](mailto:{{ site.contact_mail }}?subject=[RSD]), and we will come back to you shortly.
 
 ### Cooperation
 
diff --git a/_posts/2023/2023-02-17-rsd-open.md b/_posts/2023/2023-02-17-rsd-open.md
index 439bfb4e26f28daa1a2dafc76b4c37dc6c94cb49..691e9783bb3faf584bfd0078ce8930c152bb1764 100644
--- a/_posts/2023/2023-02-17-rsd-open.md
+++ b/_posts/2023/2023-02-17-rsd-open.md
@@ -41,7 +41,7 @@ The Helmholtz RSD is **tailored to Research Software Engineers and Researchers**
 
 ### Future plans
 
-The Helmholtz RSD is not yet finished and we just started our journey. We are constantly evaluating and further developing the platform. Please contact us via [support@hifis.net](mailto:{{ site.contact_mail }}) or open an issue in our [GitHub repository](https://github.com/hifis-net/RSD-as-a-service/issues) if you have suggestions, critics or anything else you would like to tell us.
+The Helmholtz RSD is not yet finished and we just started our journey. We are constantly evaluating and further developing the platform. Please contact us via [support@hifis.net](mailto:{{ site.contact_mail }}?subject=[RSD]) or open an issue in our [GitHub repository](https://github.com/hifis-net/RSD-as-a-service/issues) if you have suggestions, critics or anything else you would like to tell us.
 
 ### Cooperation