diff --git a/README.md b/README.md
index 51b2d70..b933080 100644
--- a/README.md
+++ b/README.md
@@ -64,11 +64,8 @@ yarn docs
 | POSTALCODE_COUNTRYCODE | String/CountryCode | N/A | The countrycode used to validate address's postal codes
 | PHONE_COUNTRYCODE | String/CountryCode | null (international) | The countrycode used to validate phone numers
 | SEED_TEST_DATA | Boolean | False | If you want the app to seed some example data set this to true
-| MAIL_SERVER | String | N/A | The smtp server's ip-address/fqdn
-| MAIL_PORT | String | N/A | The smtp server's port
-| MAIL_USER | String | N/A | The username for sending mails
-| MAIL_PASSWORD | String | N/A | The user's password for sending mails
-| MAIL_FROM | String | N/A | The from-address for sending mails
+| MAILER_URL | String(Url) | N/A | The mailer's base url (no trailing slash)
+| MAILER_KEY | String | N/A | The mailer's api key.
 | IMPRINT_URL | String(Url) | /imprint | The link to a imprint page for the system (Defaults to the frontend's imprint)
 | PRIVACY_URL | String(Url) | /privacy | The link to a privacy page for the system (Defaults to the frontend's privacy page)