fix several issues with new emails

app/controllers/members_controller.rb

@@ -6,7 +6,7 @@ class MembersController < ApplicationController
     toggle_active_posts
     @member.destroy
 
-    OrganizationNotifier.member_deleted(@member).deliver_later
+    OrganizationNotifier.member_deleted(@member.user.username, current_organization).deliver_later
 
     redirect_to request.referer.include?(organizations_path) ? organizations_path : manage_users_path
   end

app/jobs/membership_warning_job.rb

@@ -3,7 +3,7 @@ class MembershipWarningJob < ActiveJob::Base
 
   def perform
     User.without_memberships.find_each do |user|
-      if user.created_at < 15.days.ago && user.no_membership_warning?
+      if user.created_at.to_date == 15.days.ago.to_date && user.no_membership_warning?
         OrganizationNotifier.no_membership_warning(user).deliver_now
       end
     end

app/mailers/organization_notifier.rb

@@ -36,9 +36,8 @@ class OrganizationNotifier < ActionMailer::Base
     end
   end
 
-  def member_deleted(member)
-    @user = member.user
-    organization = member.organization
+  def member_deleted(username, organization)
+    @username = username
     org_managers = organization.all_managers
 
     I18n.with_locale(org_managers.first&.locale) do
@@ -53,6 +52,7 @@ class OrganizationNotifier < ActionMailer::Base
     I18n.with_locale(user.locale) do
       mail(
         subject: "Do not forget to join a Timebank",
+        to: user.email
       )
     end
   end

app/views/organization_notifier/member_deleted.html.erb

@@ -1 +1 @@
-<%= t("organization_notifier.member_deleted.body", user: @user.username) %>
+<%= t("organization_notifier.member_deleted.body", username: @username) %>

spec/jobs/membership_warning_job.rb

@@ -3,7 +3,7 @@ RSpec.describe MembershipWarningJob, type: :job do
   let!(:user) { Fabricate(:user) }
   let!(:member) { Fabricate(:member, organization: org, user: user) }
   let!(:user_with_no_memberships) { Fabricate(:user) }
-  let!(:user_with_no_memberships2) { Fabricate(:user, created_at: 16.days.ago) }
+  let!(:user_with_no_memberships2) { Fabricate(:user, created_at: 15.days.ago) }
 
   describe '#perform' do
     it "should send emails in user's locale" do