diff --git a/config/config.exs b/config/config.exs
index 2c797a1a..9d943587 100644
--- a/config/config.exs
+++ b/config/config.exs
@@ -58,7 +58,6 @@ config :logger, :console,
 
 # Use Jason for JSON parsing in Phoenix
 config :phoenix, :json_library, Jason
-config :bamboo, :json_library, Jason
 
 # Import environment specific config. This must remain at the bottom
 # of this file so it overrides the configuration defined above.
diff --git a/config/runtime.exs b/config/runtime.exs
index 4257ed9e..935ba124 100644
--- a/config/runtime.exs
+++ b/config/runtime.exs
@@ -6,7 +6,6 @@ import Config
 # by calling `mix release`.
 #
 # See `mix help release` for more information.
-{:ok, _} = Application.ensure_all_started(:tls_certificate_check)
 
 config :bcrypt_elixir,
   log_rounds: String.to_integer(System.get_env("BCRYPT_ROUNDS", "12"))
@@ -118,17 +117,14 @@ end
 if config_env() == :prod do
   # Production mailer config
   config :philomena, Philomena.Mailer,
-    adapter: Bamboo.SMTPAdapter,
-    server: System.fetch_env!("SMTP_RELAY"),
-    hostname: System.fetch_env!("SMTP_DOMAIN"),
-    port: System.get_env("SMTP_PORT") || 587,
-    username: System.fetch_env!("SMTP_USERNAME"),
-    password: System.fetch_env!("SMTP_PASSWORD"),
-    tls: :always,
-    auth: :always,
-    tls_options:
-      [middlebox_comp_mode: false] ++
-        :tls_certificate_check.options(System.fetch_env!("SMTP_RELAY"))
+    adapter: Swoosh.Adapters.Mua,
+    relay: System.fetch_env!("SMTP_RELAY"),
+    port: String.to_integer(System.get_env("SMTP_PORT", "587")),
+    auth: [
+      username: System.fetch_env!("SMTP_USERNAME"),
+      password: System.fetch_env!("SMTP_PASSWORD")
+    ],
+    ssl: [middlebox_comp_mode: false]
 
   # Production endpoint config
   {:ok, ip} = :inet.parse_address(System.get_env("APP_IP", "127.0.0.1") |> String.to_charlist())
@@ -140,7 +136,7 @@ if config_env() == :prod do
     server: not is_nil(System.get_env("START_ENDPOINT"))
 else
   # Don't send email in development
-  config :philomena, Philomena.Mailer, adapter: Bamboo.LocalAdapter
+  config :philomena, Philomena.Mailer, adapter: Swoosh.Adapters.Local
 
   # Use this to debug slime templates
   # config :slime, :keep_lines, true
diff --git a/lib/philomena/application.ex b/lib/philomena/application.ex
index 28d7d645..4d1a7a4b 100644
--- a/lib/philomena/application.ex
+++ b/lib/philomena/application.ex
@@ -14,6 +14,9 @@ defmodule Philomena.Application do
       # Background queueing system
       Philomena.ExqSupervisor,
 
+      # Mailer
+      {Task.Supervisor, name: Philomena.AsyncEmailSupervisor},
+
       # Starts a worker by calling: Philomena.Worker.start_link(arg)
       # {Philomena.Worker, arg},
       {Redix, name: :redix, host: Application.get_env(:philomena, :redis_host)},
diff --git a/lib/philomena/mailer.ex b/lib/philomena/mailer.ex
index 93bed3ba..642f329e 100644
--- a/lib/philomena/mailer.ex
+++ b/lib/philomena/mailer.ex
@@ -1,3 +1,9 @@
 defmodule Philomena.Mailer do
-  use Bamboo.Mailer, otp_app: :philomena
+  use Swoosh.Mailer, otp_app: :philomena
+
+  @spec deliver_later(Swoosh.Email.t()) :: {:ok, Swoosh.Email.t()}
+  def deliver_later(mail) do
+    Task.Supervisor.start_child(Philomena.AsyncEmailSupervisor, fn -> deliver(mail) end)
+    {:ok, mail}
+  end
 end
diff --git a/lib/philomena/users/user_notifier.ex b/lib/philomena/users/user_notifier.ex
index bc8b71db..48083321 100644
--- a/lib/philomena/users/user_notifier.ex
+++ b/lib/philomena/users/user_notifier.ex
@@ -1,9 +1,9 @@
 defmodule Philomena.Users.UserNotifier do
-  alias Bamboo.Email
+  alias Swoosh.Email
   alias Philomena.Mailer
 
   defp deliver(to, subject, body) do
-    Email.new_email(
+    Email.new(
       to: to,
       from: mailer_address(),
       subject: subject,
diff --git a/mix.exs b/mix.exs
index 85d5c270..130f1ccc 100644
--- a/mix.exs
+++ b/mix.exs
@@ -62,7 +62,6 @@ defmodule Philomena.MixProject do
        github: "basho/erlang-pbkdf2", ref: "7e9bd5fcd3cc3062159e4c9214bb628aa6feb5ca"},
       {:qrcode, "~> 0.1"},
       {:redix, "~> 1.2"},
-      {:bamboo, "~> 2.2"},
       {:remote_ip, "~> 1.1"},
       {:briefly, "~> 0.4"},
       {:tesla, "~> 1.5"},
@@ -76,11 +75,9 @@ defmodule Philomena.MixProject do
       {:inet_cidr, "~> 1.0"},
 
       # SMTP
-      {:tls_certificate_check, "~> 1.21"},
-      {:bamboo_smtp, "~> 4.2",
-       github: "botsquad/bamboo_smtp",
-       ref: "c630ccde40070deffc7d78ee6e4a08c9199f145b",
-       override: true},
+      {:swoosh, "~> 1.16"},
+      {:mua, "~> 0.2.0"},
+      {:mail, "~> 0.3.0"},
 
       # Markdown
       {:rustler, "~> 0.27"},
diff --git a/mix.lock b/mix.lock
index 522e7676..73184f5a 100644
--- a/mix.lock
+++ b/mix.lock
@@ -1,6 +1,4 @@
 %{
-  "bamboo": {:hex, :bamboo, "2.2.0", "f10a406d2b7f5123eb1f02edfa043c259db04b47ab956041f279eaac776ef5ce", [:mix], [{:hackney, ">= 1.15.2", [hex: :hackney, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}, {:mime, "~> 1.4", [hex: :mime, repo: "hexpm", optional: false]}, {:plug, "~> 1.0", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm", "8c3b14ba7d2f40cb4be04128ed1e2aff06d91d9413d38bafb4afccffa3ade4fc"},
-  "bamboo_smtp": {:git, "https://github.com/botsquad/bamboo_smtp.git", "c630ccde40070deffc7d78ee6e4a08c9199f145b", [ref: "c630ccde40070deffc7d78ee6e4a08c9199f145b"]},
   "bcrypt_elixir": {:hex, :bcrypt_elixir, "3.1.0", "0b110a9a6c619b19a7f73fa3004aa11d6e719a67e672d1633dc36b6b2290a0f7", [:make, :mix], [{:comeonin, "~> 5.3", [hex: :comeonin, repo: "hexpm", optional: false]}, {:elixir_make, "~> 0.6", [hex: :elixir_make, repo: "hexpm", optional: false]}], "hexpm", "2ad2acb5a8bc049e8d5aa267802631912bb80d5f4110a178ae7999e69dca1bf7"},
   "briefly": {:hex, :briefly, "0.5.1", "ee10d48da7f79ed2aebdc3e536d5f9a0c3e36ff76c0ad0d4254653a152b13a8a", [:mix], [], "hexpm", "bd684aa92ad8b7b4e0d92c31200993c4bc1469fc68cd6d5f15144041bd15cb57"},
   "bunt": {:hex, :bunt, "1.0.0", "081c2c665f086849e6d57900292b3a161727ab40431219529f13c4ddcf3e7a44", [:mix], [], "hexpm", "dc5f86aa08a5f6fa6b8096f0735c4e76d54ae5c9fa2c143e5a1fc7c1cd9bb6b5"},
@@ -40,11 +38,13 @@
   "idna": {:hex, :idna, "6.1.1", "8a63070e9f7d0c62eb9d9fcb360a7de382448200fbbd1b106cc96d3d8099df8d", [:rebar3], [{:unicode_util_compat, "~> 0.7.0", [hex: :unicode_util_compat, repo: "hexpm", optional: false]}], "hexpm", "92376eb7894412ed19ac475e4a86f7b413c1b9fbb5bd16dccd57934157944cea"},
   "inet_cidr": {:hex, :inet_cidr, "1.0.8", "d26bb7bdbdf21ae401ead2092bf2bb4bf57fe44a62f5eaa5025280720ace8a40", [:mix], [], "hexpm", "d5b26da66603bb56c933c65214c72152f0de9a6ea53618b56d63302a68f6a90e"},
   "jason": {:hex, :jason, "1.4.1", "af1504e35f629ddcdd6addb3513c3853991f694921b1b9368b0bd32beb9f1b63", [:mix], [{:decimal, "~> 1.0 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm", "fbb01ecdfd565b56261302f7e1fcc27c4fb8f32d56eab74db621fc154604a7a1"},
+  "mail": {:hex, :mail, "0.3.1", "cb0a14e4ed8904e4e5a08214e686ccf6f9099346885db17d8c309381f865cc5c", [:mix], [], "hexpm", "1db701e89865c1d5fa296b2b57b1cd587587cca8d8a1a22892b35ef5a8e352a6"},
   "metrics": {:hex, :metrics, "1.0.1", "25f094dea2cda98213cecc3aeff09e940299d950904393b2a29d191c346a8486", [:rebar3], [], "hexpm", "69b09adddc4f74a40716ae54d140f93beb0fb8978d8636eaded0c31b6f099f16"},
   "mime": {:hex, :mime, "1.6.0", "dabde576a497cef4bbdd60aceee8160e02a6c89250d6c0b29e56c0dfb00db3d2", [:mix], [], "hexpm", "31a1a8613f8321143dde1dafc36006a17d28d02bdfecb9e95a880fa7aabd19a7"},
   "mimerl": {:hex, :mimerl, "1.2.0", "67e2d3f571088d5cfd3e550c383094b47159f3eee8ffa08e64106cdf5e981be3", [:rebar3], [], "hexpm", "f278585650aa581986264638ebf698f8bb19df297f66ad91b18910dfc6e19323"},
   "mint": {:hex, :mint, "1.5.2", "4805e059f96028948870d23d7783613b7e6b0e2fb4e98d720383852a760067fd", [:mix], [{:castore, "~> 0.1.0 or ~> 1.0", [hex: :castore, repo: "hexpm", optional: true]}, {:hpax, "~> 0.1.1", [hex: :hpax, repo: "hexpm", optional: false]}], "hexpm", "d77d9e9ce4eb35941907f1d3df38d8f750c357865353e21d335bdcdf6d892a02"},
   "mix_audit": {:hex, :mix_audit, "2.1.2", "6cd5c5e2edbc9298629c85347b39fb3210656e541153826efd0b2a63767f3395", [:make, :mix], [{:jason, "~> 1.1", [hex: :jason, repo: "hexpm", optional: false]}, {:yaml_elixir, "~> 2.9", [hex: :yaml_elixir, repo: "hexpm", optional: false]}], "hexpm", "68d2f06f96b9c445a23434c9d5f09682866a5b4e90f631829db1c64f140e795b"},
+  "mua": {:hex, :mua, "0.2.1", "7f1c20dbe7266d514a07bf5b7a3946413d70150be41cb5475b5a95bb517a378f", [:mix], [{:castore, "~> 0.1.0 or ~> 1.0", [hex: :castore, repo: "hexpm", optional: true]}], "hexpm", "0bc556803a1d09dfb69bfebecb838cf33a2d123de84f700c41b6b8134027c11f"},
   "neotoma": {:hex, :neotoma, "1.7.3", "d8bd5404b73273989946e4f4f6d529e5c2088f5fa1ca790b4dbe81f4be408e61", [:rebar], [], "hexpm", "2da322b9b1567ffa0706a7f30f6bbbde70835ae44a1050615f4b4a3d436e0f28"},
   "nimble_options": {:hex, :nimble_options, "1.1.0", "3b31a57ede9cb1502071fade751ab0c7b8dbe75a9a4c2b5bbb0943a690b63172", [:mix], [], "hexpm", "8bbbb3941af3ca9acc7835f5655ea062111c9c27bcac53e004460dfd19008a99"},
   "nimble_parsec": {:hex, :nimble_parsec, "1.4.0", "51f9b613ea62cfa97b25ccc2c1b4216e81df970acd8e16e8d1bdc58fef21370d", [:mix], [], "hexpm", "9c565862810fb383e9838c1dd2d7d2c437b3d13b267414ba6af33e50d2d1cf28"},
@@ -78,9 +78,9 @@
   "sobelow": {:hex, :sobelow, "0.13.0", "218afe9075904793f5c64b8837cc356e493d88fddde126a463839351870b8d1e", [:mix], [{:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "cd6e9026b85fc35d7529da14f95e85a078d9dd1907a9097b3ba6ac7ebbe34a0d"},
   "ssl_verify_fun": {:hex, :ssl_verify_fun, "1.1.7", "354c321cf377240c7b8716899e182ce4890c5938111a1296add3ec74cf1715df", [:make, :mix, :rebar3], [], "hexpm", "fe4c190e8f37401d30167c8c405eda19469f34577987c76dde613e838bbc67f8"},
   "sweet_xml": {:hex, :sweet_xml, "0.7.4", "a8b7e1ce7ecd775c7e8a65d501bc2cd933bff3a9c41ab763f5105688ef485d08", [:mix], [], "hexpm", "e7c4b0bdbf460c928234951def54fe87edf1a170f6896675443279e2dbeba167"},
+  "swoosh": {:hex, :swoosh, "1.16.9", "20c6a32ea49136a4c19f538e27739bb5070558c0fa76b8a95f4d5d5ca7d319a1", [:mix], [{:bandit, ">= 1.0.0", [hex: :bandit, repo: "hexpm", optional: true]}, {:cowboy, "~> 1.1 or ~> 2.4", [hex: :cowboy, repo: "hexpm", optional: true]}, {:ex_aws, "~> 2.1", [hex: :ex_aws, repo: "hexpm", optional: true]}, {:finch, "~> 0.6", [hex: :finch, repo: "hexpm", optional: true]}, {:gen_smtp, "~> 0.13 or ~> 1.0", [hex: :gen_smtp, repo: "hexpm", optional: true]}, {:hackney, "~> 1.9", [hex: :hackney, repo: "hexpm", optional: true]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}, {:mail, "~> 0.2", [hex: :mail, repo: "hexpm", optional: true]}, {:mime, "~> 1.1 or ~> 2.0", [hex: :mime, repo: "hexpm", optional: false]}, {:mua, "~> 0.2.0", [hex: :mua, repo: "hexpm", optional: true]}, {:multipart, "~> 0.4", [hex: :multipart, repo: "hexpm", optional: true]}, {:plug, "~> 1.9", [hex: :plug, repo: "hexpm", optional: true]}, {:plug_cowboy, ">= 1.0.0", [hex: :plug_cowboy, repo: "hexpm", optional: true]}, {:req, "~> 0.5 or ~> 1.0", [hex: :req, repo: "hexpm", optional: true]}, {:telemetry, "~> 0.4.2 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "878b1a7a6c10ebbf725a3349363f48f79c5e3d792eb621643b0d276a38acc0a6"},
   "telemetry": {:hex, :telemetry, "1.2.1", "68fdfe8d8f05a8428483a97d7aab2f268aaff24b49e0f599faa091f1d4e7f61c", [:rebar3], [], "hexpm", "dad9ce9d8effc621708f99eac538ef1cbe05d6a874dd741de2e689c47feafed5"},
   "tesla": {:hex, :tesla, "1.8.0", "d511a4f5c5e42538d97eef7c40ec4f3e44effdc5068206f42ed859e09e51d1fd", [:mix], [{:castore, "~> 0.1 or ~> 1.0", [hex: :castore, repo: "hexpm", optional: true]}, {:exjsx, ">= 3.0.0", [hex: :exjsx, repo: "hexpm", optional: true]}, {:finch, "~> 0.13", [hex: :finch, repo: "hexpm", optional: true]}, {:fuse, "~> 2.4", [hex: :fuse, repo: "hexpm", optional: true]}, {:gun, ">= 1.0.0", [hex: :gun, repo: "hexpm", optional: true]}, {:hackney, "~> 1.6", [hex: :hackney, repo: "hexpm", optional: true]}, {:ibrowse, "4.4.2", [hex: :ibrowse, repo: "hexpm", optional: true]}, {:jason, ">= 1.0.0", [hex: :jason, repo: "hexpm", optional: true]}, {:mime, "~> 1.0 or ~> 2.0", [hex: :mime, repo: "hexpm", optional: false]}, {:mint, "~> 1.0", [hex: :mint, repo: "hexpm", optional: true]}, {:msgpax, "~> 2.3", [hex: :msgpax, repo: "hexpm", optional: true]}, {:poison, ">= 1.0.0", [hex: :poison, repo: "hexpm", optional: true]}, {:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: true]}], "hexpm", "10501f360cd926a309501287470372af1a6e1cbed0f43949203a4c13300bc79f"},
-  "tls_certificate_check": {:hex, :tls_certificate_check, "1.21.0", "042ab2c0c860652bc5cf69c94e3a31f96676d14682e22ec7813bd173ceff1788", [:rebar3], [{:ssl_verify_fun, "~> 1.1", [hex: :ssl_verify_fun, repo: "hexpm", optional: false]}], "hexpm", "6cee6cffc35a390840d48d463541d50746a7b0e421acaadb833cfc7961e490e7"},
   "toml": {:hex, :toml, "0.7.0", "fbcd773caa937d0c7a02c301a1feea25612720ac3fa1ccb8bfd9d30d822911de", [:mix], [], "hexpm", "0690246a2478c1defd100b0c9b89b4ea280a22be9a7b313a8a058a2408a2fa70"},
   "unicode_util_compat": {:hex, :unicode_util_compat, "0.7.0", "bc84380c9ab48177092f43ac89e4dfa2c6d62b40b8bd132b1059ecc7232f9a78", [:rebar3], [], "hexpm", "25eee6d67df61960cf6a794239566599b09e17e668d3700247bc498638152521"},
   "websock": {:hex, :websock, "0.5.3", "2f69a6ebe810328555b6fe5c831a851f485e303a7c8ce6c5f675abeb20ebdadc", [:mix], [], "hexpm", "6105453d7fac22c712ad66fab1d45abdf049868f253cf719b625151460b8b453"},