Configure mailer

config/settings.rb

@@ -31,6 +31,8 @@ module Adamantium
     setting :from_email, default: nil
     setting :dayone_email, default: nil
 
+    setting :smtp_password, default: nil
+    setting :smtp_username, default: nil
     # Micropub endpoints
     setting :micropub_media_endpoint, default: "", constructor: Types::Params::String
 

lib/adamantium/syndication/dayone.rb

@@ -6,6 +6,18 @@ module Adamantium
       include Deps["settings"]
 
       def call(name:, content:)
+        Mail.defaults do
+          delivery_method :smtp, {
+            address: "smtp.fastmail.com",
+            port: 465,
+            user_name: settings.smtp_username,
+            password: settings.smtp_password,
+            authentication: "plain",
+            tls: true,
+            openssl_verify_mode: "peer"
+          }
+        end
+
         Mail.deliver do
           to settings.dayone_email
           from settings.from_email