diff --git a/backend/pom.xml b/backend/pom.xml
index 9299d2d..e1e2154 100644
--- a/backend/pom.xml
+++ b/backend/pom.xml
@@ -122,7 +122,7 @@
         <dependency>
             <groupId>org.simplejavamail</groupId>
             <artifactId>simple-java-mail</artifactId>
-            <version>5.2.0</version>
+            <version>6.0.3</version>
         </dependency>
         <dependency>
             <groupId>org.jetbrains.kotlinx</groupId>
diff --git a/backend/src/main/kotlin/uk/co/neviyn/observationdatabase/Email.kt b/backend/src/main/kotlin/uk/co/neviyn/observationdatabase/Email.kt
index a719b0a..96ab505 100644
--- a/backend/src/main/kotlin/uk/co/neviyn/observationdatabase/Email.kt
+++ b/backend/src/main/kotlin/uk/co/neviyn/observationdatabase/Email.kt
@@ -1,8 +1,9 @@
 package uk.co.neviyn.observationdatabase
 
 import org.joda.time.DateTime
+import org.simplejavamail.api.mailer.Mailer
+import org.simplejavamail.api.mailer.config.TransportStrategy
 import org.simplejavamail.email.EmailBuilder
-import org.simplejavamail.mailer.Mailer
 import org.simplejavamail.mailer.MailerBuilder
 import org.slf4j.Logger
 import org.slf4j.LoggerFactory
@@ -47,5 +48,5 @@ class Email {
 
     private fun createMailer(): Mailer = MailerBuilder.withSMTPServer(environment.getProperty("smtp.host"),
         environment.getProperty("smtp.port")!!.toInt(), environment.getProperty("smtp.username"),
-        environment.getProperty("smtp.password")).buildMailer()
+        environment.getProperty("smtp.password")).withTransportStrategy(TransportStrategy.SMTP_TLS).buildMailer()
 }
\ No newline at end of file
diff --git a/backend/src/main/kotlin/uk/co/neviyn/observationdatabase/controller/ObservationsController.kt b/backend/src/main/kotlin/uk/co/neviyn/observationdatabase/controller/ObservationsController.kt
index fd1f539..5947153 100644
--- a/backend/src/main/kotlin/uk/co/neviyn/observationdatabase/controller/ObservationsController.kt
+++ b/backend/src/main/kotlin/uk/co/neviyn/observationdatabase/controller/ObservationsController.kt
@@ -132,8 +132,8 @@ class ObservationsController {
             logger.info("Attempted to add Observation without a tutor")
             throw ResponseStatusException(HttpStatus.BAD_REQUEST, "Observation requires at least one Tutor")
         }
-        for(scenario in newObservation.scenarios){
-            if(!scenario.ratingsAllValid()){
+        for (scenario in newObservation.scenarios) {
+            if (!scenario.ratingsAllValid()) {
                 logger.info("Attempted to submit scenario with invalid score, $scenario")
                 throw ResponseStatusException(HttpStatus.BAD_REQUEST, "Scenario scores must be between 1 and 5")
             }