MVP

.formatter.exs

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+# Used by "mix format"
+[
+  inputs: ["{mix,.formatter}.exs", "{config,lib,test}/**/*.{ex,exs}"]
+]

.gitignore

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+# Created by https://www.toptal.com/developers/gitignore/api/elixir
+# Edit at https://www.toptal.com/developers/gitignore?templates=elixir
+
+### Elixir ###
+/_build
+/cover
+/deps
+/doc
+/.fetch
+erl_crash.dump
+*.ez
+*.beam
+/config/*.secret.exs
+.elixir_ls/
+
+### Elixir Patch ###
+
+# End of https://www.toptal.com/developers/gitignore/api/elixir

README.md

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+# Swoosh Mailinator
+
+This project is an adapter for swoosh that relais any email to the Mailinator.com SMTP server, no mater the internet domain of the recipient.
+
+This service provide no encryption in transit (SSL/TLS) nor authentication.
+
+This service provide public access to mailboxes.
+
+Don't use this adapter for confidential information.
+
+Use for tests only.
+
+## Installation
+
+This module can be installed by adding `swoosh_mailinator` to your list of dependencies in `mix.exs`:
+
+```elixir
+def deps do
+  [
+    {:swoosh_mailinator, "~> 0.1.0", git: "https://git.zoocoop.com/setop/swoosh_mailinator"}
+  ]
+end
+```
+
+
+## Usage
+
+```elixir
+# config/config.exs
+config :sample, Sample.Mailer,
+  adapter: Swoosh.Adapters.Mailinator
+
+# lib/sample/mailer.ex
+defmodule Sample.Mailer do
+  use Swoosh.Mailer, otp_app: :sample
+end
+```
+
+see also [test/swoosh_mlntr.exs](test/swoosh_mlntr.exs)

lib/swoosh_mailinator.ex

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+defmodule Swoosh.Adapters.Mailinator do
+
+  @moduledoc ~S"""
+  An adapter that sends email to Mailinator.com service using the SMTP protocol.
+
+  Underneath this adapter uses the
+  [gen_smtp](https://github.com/gen-smtp/gen_smtp) library, add it to your mix.exs file.
+
+  ## Example
+
+      # mix.exs
+      def deps do
+        [
+         {:swoosh, "~> 1.3"},
+         {:gen_smtp, "~> 1.1"}
+        ]
+      end
+
+      # config/config.exs
+      config :sample, Sample.Mailer,
+        adapter: Swoosh.Adapters.Mailinator
+
+      # lib/sample/mailer.ex
+      defmodule Sample.Mailer do
+        use Swoosh.Mailer, otp_app: :sample
+      end
+
+  ## Note
+
+  This adatper relay the email to the Mailinator.com SMTP server, no mater the internet domain of the recipient.
+
+  This service provide no encryption in transit (SSL/TLS) nor authentication.
+
+  This service provide public access to mailboxes.
+
+  Don't use this adapter for confidential information.
+
+  Use for tests only.
+
+  TODO: allow to choose from Text or HTML :prefer_html, :prefer_text
+  """
+
+  use Swoosh.Adapter, required_config: []
+
+  alias Swoosh.Email
+  alias Swoosh.Mailer
+
+  def deliver(%Email{} = email, _) do
+    email
+    |> Map.put(:text_body, nil)
+    |> Mailer.deliver([
+      adapter: Swoosh.Adapters.SMTP,
+      relay: "mail.mailinator.com",
+      port: 25,
+      tls: :never,
+      auth: :never,
+      retries: 1,
+      no_mx_lookups: true
+    ])
+  end
+end

mix.exs

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+defmodule SwooshMailinator.MixProject do
+  use Mix.Project
+
+  def project do
+    [
+      version: "0.1.0",
+      deps: [
+          {:swoosh, "~> 1.7"},
+        ]
+    ]
+  end
+
+end

mix.lock

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+%{
+  "jason": {:hex, :jason, "1.4.1", "af1504e35f629ddcdd6addb3513c3853991f694921b1b9368b0bd32beb9f1b63", [:mix], [{:decimal, "~> 1.0 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm", "fbb01ecdfd565b56261302f7e1fcc27c4fb8f32d56eab74db621fc154604a7a1"},
+  "mime": {:hex, :mime, "2.0.5", "dc34c8efd439abe6ae0343edbb8556f4d63f178594894720607772a041b04b02", [:mix], [], "hexpm", "da0d64a365c45bc9935cc5c8a7fc5e49a0e0f9932a761c55d6c52b142780a05c"},
+  "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"},
+}

test/swoosh_mlntr.exs

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+Mix.install(
+  [
+    {:swoosh, "~> 1.7"},
+    {:gen_smtp, "~> 1.1"},
+    {:hackney, "~> 1.8"},
+    {:swoosh_mailinator, path: "."}, #app: false }
+  ]
+)
+
+defmodule Main do
+  import Swoosh.Email
+  import Swoosh.Mailer
+
+  def main do
+    mess = """
+Compose, deliver and test your emails easily in Elixir.
+
+Swoosh comes with many adapters, including SendGrid, Mandrill, Mailgun, Postmark and SMTP. See the full list of adapters below.
+
+The complete documentation for Swoosh is available online at HexDocs.
+"""
+    new()
+    |> to("mlkjhg@kiujygtrfedc.com")
+    |> from({"Who Knows", "who.knows@nonexisting.tld"})
+    |> subject("Hello, Swoosh!")
+    |> html_body("<h1>Hello World</h1><p>"<>mess<>"</p>")
+    |> text_body(mess)
+    |> IO.inspect()
+    |> deliver([
+      adapter: Swoosh.Adapters.Mailinator
+    ])
+  end
+end
+
+Main.main() |> IO.inspect()