diff --git a/app/models/export.rb b/app/models/export.rb
index 9bf866d3587beb..b35632c60ffec2 100644
--- a/app/models/export.rb
+++ b/app/models/export.rb
@@ -14,7 +14,11 @@ def to_blocked_accounts_csv
   end
 
   def to_muted_accounts_csv
-    to_csv account.muting.select(:username, :domain)
+    CSV.generate(headers: ['Account address', 'Hide notifications'], write_headers: true) do |csv|
+      account.mute_relationships.includes(:target_account).reorder(id: :desc).each do |mute|
+        csv << [acct(mute.target_account), mute.hide_notifications]
+      end
+    end
   end
 
   def to_following_accounts_csv
diff --git a/app/services/import_service.rb b/app/services/import_service.rb
index 3f558626e6f49a..c1c88e0dde7fc6 100644
--- a/app/services/import_service.rb
+++ b/app/services/import_service.rb
@@ -8,7 +8,6 @@ class ImportService < BaseService
   def call(import)
     @import  = import
     @account = @import.account
-    @data    = CSV.new(import_data).reject(&:blank?)
 
     case @import.type
     when 'following'
@@ -25,19 +24,23 @@ def call(import)
   private
 
   def import_follows!
+    parse_import_data!(['Account address'])
     import_relationships!('follow', 'unfollow', @account.following, follow_limit)
   end
 
   def import_blocks!
+    parse_import_data!(['Account address'])
     import_relationships!('block', 'unblock', @account.blocking, ROWS_PROCESSING_LIMIT)
   end
 
   def import_mutes!
+    parse_import_data!(['Account address'])
     import_relationships!('mute', 'unmute', @account.muting, ROWS_PROCESSING_LIMIT)
   end
 
   def import_domain_blocks!
-    items = @data.take(ROWS_PROCESSING_LIMIT).map { |row| row.first.strip }
+    parse_import_data!(['#domain'])
+    items = @data.take(ROWS_PROCESSING_LIMIT).map { |row| row['#domain'].strip }
 
     if @import.overwrite?
       presence_hash = items.each_with_object({}) { |id, mapping| mapping[id] = true }
@@ -61,25 +64,33 @@ def import_domain_blocks!
   end
 
   def import_relationships!(action, undo_action, overwrite_scope, limit)
-    items = @data.take(limit).map { |row| row.first.strip }
+    items = @data.take(limit).map { |row| [row['Account address']&.strip, row['Hide notifications']&.strip] }.reject { |(id, _)| id.blank? }
 
     if @import.overwrite?
-      presence_hash = items.each_with_object({}) { |id, mapping| mapping[id] = true }
+      presence_hash = items.each_with_object({}) { |(id, extra), mapping| mapping[id] = [true, extra] }
 
       overwrite_scope.find_each do |target_account|
         if presence_hash[target_account.acct]
           items.delete(target_account.acct)
+          extra = presence_hash[target_account.acct][1]
+          Import::RelationshipWorker.perform_async(@account.id, target_account.acct, action, ActiveModel::Type::Boolean.new.cast(extra))
         else
           Import::RelationshipWorker.perform_async(@account.id, target_account.acct, undo_action)
         end
       end
     end
 
-    Import::RelationshipWorker.push_bulk(items) do |acct|
-      [@account.id, acct, action]
+    Import::RelationshipWorker.push_bulk(items) do |acct, extra|
+      [@account.id, acct, action, ActiveModel::Type::Boolean.new.cast(extra)]
     end
   end
 
+  def parse_import_data!(default_headers)
+    data = CSV.parse(import_data, headers: true)
+    data = CSV.parse(import_data, headers: default_headers) unless data.headers&.first&.strip&.include?(' ')
+    @data = data.reject(&:blank?)
+  end
+
   def import_data
     Paperclip.io_adapters.for(@import.data).read
   end
diff --git a/app/workers/import/relationship_worker.rb b/app/workers/import/relationship_worker.rb
index e9db20a463f44e..43ec09ea2e29bc 100644
--- a/app/workers/import/relationship_worker.rb
+++ b/app/workers/import/relationship_worker.rb
@@ -5,7 +5,7 @@ class Import::RelationshipWorker
 
   sidekiq_options queue: 'pull', retry: 8, dead: false
 
-  def perform(account_id, target_account_uri, relationship)
+  def perform(account_id, target_account_uri, relationship, extra = nil)
     from_account   = Account.find(account_id)
     target_account = ResolveAccountService.new.call(target_account_uri)
 
@@ -21,7 +21,7 @@ def perform(account_id, target_account_uri, relationship)
     when 'unblock'
       UnblockService.new.call(from_account, target_account)
     when 'mute'
-      MuteService.new.call(from_account, target_account)
+      MuteService.new.call(from_account, target_account, notifications: extra)
     when 'unmute'
       UnmuteService.new.call(from_account, target_account)
     end
diff --git a/spec/controllers/settings/exports/muted_accounts_controller_spec.rb b/spec/controllers/settings/exports/muted_accounts_controller_spec.rb
index f42d7881ed95bb..642f0a9b8f0ae0 100644
--- a/spec/controllers/settings/exports/muted_accounts_controller_spec.rb
+++ b/spec/controllers/settings/exports/muted_accounts_controller_spec.rb
@@ -11,7 +11,7 @@
       sign_in user, scope: :user
       get :index, format: :csv
 
-      expect(response.body).to eq "username@domain\n"
+      expect(response.body).to eq "Account address,Hide notifications\nusername@domain,true\n"
     end
   end
 end
diff --git a/spec/fixtures/files/mute-imports.txt b/spec/fixtures/files/mute-imports.txt
new file mode 100644
index 00000000000000..125cbd384b1b97
--- /dev/null
+++ b/spec/fixtures/files/mute-imports.txt
@@ -0,0 +1,4 @@
+bob
+
+eve@example.com
+
diff --git a/spec/fixtures/files/new-mute-imports.txt b/spec/fixtures/files/new-mute-imports.txt
new file mode 100644
index 00000000000000..c1c9bca9bfdafb
--- /dev/null
+++ b/spec/fixtures/files/new-mute-imports.txt
@@ -0,0 +1,4 @@
+Account address,Hide notifications
+bob,true
+eve@example.com,false
+
diff --git a/spec/models/export_spec.rb b/spec/models/export_spec.rb
index 277dcc52649885..0553f4098b769c 100644
--- a/spec/models/export_spec.rb
+++ b/spec/models/export_spec.rb
@@ -21,10 +21,11 @@
       target_accounts.each(&account.method(:mute!))
 
       export = Export.new(account).to_muted_accounts_csv
-      results = export.strip.split
+      results = export.strip.split("\n")
 
-      expect(results.size).to eq 2
-      expect(results.first).to eq 'one@local.host'
+      expect(results.size).to eq 3
+      expect(results.first).to eq 'Account address,Hide notifications'
+      expect(results.second).to eq 'one@local.host,true'
     end
 
     it 'returns a csv of the following accounts' do
diff --git a/spec/services/import_service_spec.rb b/spec/services/import_service_spec.rb
new file mode 100644
index 00000000000000..bd23781ce663d3
--- /dev/null
+++ b/spec/services/import_service_spec.rb
@@ -0,0 +1,84 @@
+require 'rails_helper'
+
+RSpec.describe ImportService, type: :service do
+  let!(:account) { Fabricate(:account) }
+  let!(:bob)     { Fabricate(:account, username: 'bob') }
+  let!(:eve)     { Fabricate(:account, username: 'eve', domain: 'example.com') }
+
+  context 'import old-style list of muted users' do
+    subject { ImportService.new }
+
+    let(:csv) { attachment_fixture('mute-imports.txt') }
+
+    describe 'when no accounts are muted' do
+      let(:import) { Import.create(account: account, type: 'muting', data: csv) }
+      it 'mutes the listed accounts, including notifications' do
+        subject.call(import)
+        expect(account.muting.count).to eq 2
+        expect(Mute.find_by(account: account, target_account: bob).hide_notifications).to be true
+      end
+    end
+
+    describe 'when some accounts are muted and overwrite is not set' do
+      let(:import) { Import.create(account: account, type: 'muting', data: csv) }
+
+      it 'mutes the listed accounts, including notifications' do
+        account.mute!(bob, notifications: false)
+        subject.call(import)
+        expect(account.muting.count).to eq 2
+        expect(Mute.find_by(account: account, target_account: bob).hide_notifications).to be true
+      end
+    end
+
+    describe 'when some accounts are muted and overwrite is set' do
+      let(:import) { Import.create(account: account, type: 'muting', data: csv, overwrite: true) }
+
+      it 'mutes the listed accounts, including notifications' do
+        account.mute!(bob, notifications: false)
+        subject.call(import)
+        expect(account.muting.count).to eq 2
+        expect(Mute.find_by(account: account, target_account: bob).hide_notifications).to be true
+      end
+    end
+  end
+
+  context 'import new-style list of muted users' do
+    subject { ImportService.new }
+
+    let(:csv) { attachment_fixture('new-mute-imports.txt') }
+
+    describe 'when no accounts are muted' do
+      let(:import) { Import.create(account: account, type: 'muting', data: csv) }
+      it 'mutes the listed accounts, respecting notifications' do
+        subject.call(import)
+        expect(account.muting.count).to eq 2
+        expect(Mute.find_by(account: account, target_account: bob).hide_notifications).to be true
+        expect(Mute.find_by(account: account, target_account: eve).hide_notifications).to be false
+      end
+    end
+
+    describe 'when some accounts are muted and overwrite is not set' do
+      let(:import) { Import.create(account: account, type: 'muting', data: csv) }
+
+      it 'mutes the listed accounts, respecting notifications' do
+        account.mute!(bob, notifications: true)
+        subject.call(import)
+        expect(account.muting.count).to eq 2
+        expect(Mute.find_by(account: account, target_account: bob).hide_notifications).to be true
+        expect(Mute.find_by(account: account, target_account: eve).hide_notifications).to be false
+      end
+    end
+
+    describe 'when some accounts are muted and overwrite is set' do
+      let(:import) { Import.create(account: account, type: 'muting', data: csv, overwrite: true) }
+
+      it 'mutes the listed accounts, respecting notifications' do
+        account.mute!(bob, notifications: true)
+        subject.call(import)
+        expect(account.muting.count).to eq 2
+        expect(Mute.find_by(account: account, target_account: bob).hide_notifications).to be true
+        expect(Mute.find_by(account: account, target_account: eve).hide_notifications).to be false
+      end
+    end
+  end
+end