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diff --git a/lib/pleroma/workers/cron/digest_emails_worker.ex b/lib/pleroma/workers/cron/digest_emails_worker.ex
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+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Workers.Cron.DigestEmailsWorker do
+  @moduledoc """
+  The worker to send digest emails.
+  """
+
+  use Oban.Worker, queue: "digest_emails"
+
+  alias Pleroma.Config
+  alias Pleroma.Emails
+  alias Pleroma.Repo
+  alias Pleroma.User
+
+  import Ecto.Query
+
+  require Logger
+
+  @impl Oban.Worker
+  def perform(_opts, _job) do
+    config = Config.get([:email_notifications, :digest])
+
+    if config[:active] do
+      negative_interval = -Map.fetch!(config, :interval)
+      inactivity_threshold = Map.fetch!(config, :inactivity_threshold)
+      inactive_users_query = User.list_inactive_users_query(inactivity_threshold)
+
+      now = NaiveDateTime.truncate(NaiveDateTime.utc_now(), :second)
+
+      from(u in inactive_users_query,
+        where: fragment(~s(? ->'digest' @> 'true'), u.email_notifications),
+        where: u.last_digest_emailed_at < datetime_add(^now, ^negative_interval, "day"),
+        select: u
+      )
+      |> Repo.all()
+      |> send_emails
+    end
+  end
+
+  def send_emails(users) do
+    Enum.each(users, &send_email/1)
+  end
+
+  @doc """
+  Send digest email to the given user.
+  Updates `last_digest_emailed_at` field for the user and returns the updated user.
+  """
+  @spec send_email(User.t()) :: User.t()
+  def send_email(user) do
+    with %Swoosh.Email{} = email <- Emails.UserEmail.digest_email(user) do
+      Emails.Mailer.deliver_async(email)
+    end
+
+    User.touch_last_digest_emailed_at(user)
+  end
+end