mail gems having trouble

Gemfile

@@ -53,7 +53,6 @@ gem "image_processing", "~> 1.2"
 
 gem "brakeman"
 gem "bundler-audit"
-gem "net-smtp"
 gem "rubocop-rails"
 
 group :development, :test do

Gemfile.lock

@@ -114,7 +114,6 @@ GEM
       irb (>= 1.3.6)
       reline (>= 0.2.7)
     diff-lcs (1.5.0)
-    digest (3.1.0)
     erubi (1.10.0)
     ffi (1.15.4)
     globalid (1.0.0)
@@ -128,7 +127,6 @@ GEM
       actionpack (>= 6.0.0)
       railties (>= 6.0.0)
     io-console (0.5.10)
-    io-wait (0.2.1)
     irb (1.4.1)
       reline (>= 0.3.0)
     jbuilder (2.11.5)
@@ -147,13 +145,6 @@ GEM
     mini_portile2 (2.6.1)
     minitest (5.15.0)
     msgpack (1.4.2)
-    net-protocol (0.1.2)
-      io-wait
-      timeout
-    net-smtp (0.3.1)
-      digest
-      net-protocol
-      timeout
     nio4r (2.5.8)
     nokogiri (1.12.5)
       mini_portile2 (~> 2.6.1)
@@ -235,7 +226,6 @@ GEM
     stimulus-rails (1.0.2)
       railties (>= 6.0.0)
     thor (1.1.0)
-    timeout (0.2.0)
     turbo-rails (1.0.0)
       actionpack (>= 6.0.0)
       railties (>= 6.0.0)
@@ -273,7 +263,6 @@ DEPENDENCIES
   image_processing (~> 1.2)
   importmap-rails
   jbuilder
-  net-smtp
   pg (~> 1.1)
   puma (~> 5.0)
   rack-mini-profiler

config/application.rb

@@ -10,7 +10,7 @@ require 'active_record/railtie'
 require 'active_storage/engine'
 require 'action_controller/railtie'
 require 'action_mailer/railtie'
-require 'action_mailbox/engine'
+# require 'action_mailbox/engine'
 require 'action_text/engine'
 require 'action_view/railtie'
 require 'action_cable/engine'