Encrypt outgoing emails when possible

app/mailers/notification_mailer.rb

@@ -3,7 +3,7 @@ class NotificationMailer < ApplicationMailer
     @user = params[:user]
     @amount_sats = params[:amount_sats]
     @subject = "Sats received"
-    mail to: @user.email, subject: @subject
+    send_mail
   end
 
   def remotestorage_auth_created
@@ -15,19 +15,19 @@ class NotificationMailer < ApplicationMailer
       "#{access} #{directory}"
     end
     @subject = "New app connected to your storage"
-    mail to: @user.email, subject: @subject
+    send_mail
   end
 
   def new_invitations_available
     @user = params[:user]
     @subject = "New invitations added to your account"
-    mail to: @user.email, subject: @subject
+    send_mail
   end
 
   def bitcoin_donation_confirmed
     @user = params[:user]
     @donation = params[:donation]
     @subject = "Donation confirmed"
-    mail to: @user.email, subject: @subject
+    send_mail
   end
 end