diff --git a/source/api/actions/member_project.ts b/source/api/actions/member_project.ts
index faafec8..99caab2 100644
--- a/source/api/actions/member_project.ts
+++ b/source/api/actions/member_project.ts
@@ -76,7 +76,7 @@ namespace _espe.api
 					}
 					else {
 						if (
-							(! _espe.conf.get().settings.facultative_membership_number)
+							(! _espe.conf.get().settings.misc.facultative_membership_number)
 							&&
 							(
 								(input.membership_number === null)
diff --git a/source/conf.ts b/source/conf.ts
index 3229d6c..87febc9 100644
--- a/source/conf.ts
+++ b/source/conf.ts
@@ -20,6 +20,7 @@ namespace _espe.conf
 	 */
 	export type type_conf = {
 		general : {
+			language : (null | string);
 			verbosity : (
 				"none"
 				|
@@ -94,22 +95,16 @@ namespace _espe.conf
 			lifetime : int;
 		};
 		settings : {
-			target_domain : string;
-			frontend_url_base : (null | string);
-			login_url : (null | string);
-			prefix_for_nominal_email_addresses : string;
-			facultative_membership_number : boolean;
+			organisation : {
+				name : string;
+				domain : string;
+			};
+			misc : {
+				prefix_for_veiled_email_addresses : string;
+				facultative_membership_number : boolean;
+			};
 			summon_email : {
-				subject : string;
-				body : string;
-			};
-			registration_email : {
-				subject : string;
-				body : string;
-			};
-			activation_email : {
-				subject : string;
-				body : string;
+				remark : string;
 			};
 			password_policy : {
 				minimum_length : (null | int);
@@ -120,19 +115,15 @@ namespace _espe.conf
 			};
 			password_change : {
 				cooldown_time : int;
-				initialization_email : {
-					subject : string;
-					body : string;
-				};
-				execution_email : {
-					subject : string;
-					body : string;
-				};
 			};
 			name_index : {
 				veil : boolean;
 				salt : (null | string);
 			};
+			connections : {
+				frontend_url_base : (null | string);
+				login_url : (null | string);
+			};
 		};
 		// TODO: evtl. in Datenbank verlagern
 		admins : Array<
@@ -162,6 +153,7 @@ namespace _espe.conf
 		_data = {
 			"general": (
 				((node_general) => ({
+					"language": (node_general["language"] ?? null),
 					"verbosity": (node_general["verbosity"] ?? "notice"),
 					"verification_secret": (node_general["verification_secret"] ?? null),
 				})) (conf_raw["general"] ?? {})
@@ -258,23 +250,21 @@ namespace _espe.conf
 			),
 			"settings": (
 				((node_settings) => ({
-					"target_domain": (node_settings["target_domain"] ?? "example.org"),
-					"frontend_url_base": (node_settings["frontend_url_base"] ?? null), // TODO: mandatory?
-					"login_url": (node_settings["login_url"] ?? null),
-					"prefix_for_nominal_email_addresses": (node_settings["prefix_for_nominal_email_addresses"] ?? "member-"),
-					"facultative_membership_number": (node_settings["facultative_membership_number"] ?? false),
-					"summon_email": {
-						"subject": ((node_settings["summon_email"] ?? {})["subject"] ?? "Please register"),
-						"body": ((node_settings["summon_email"] ?? {})["body"] ?? "URL: {{url}}"),
-					},
-					"registration_email": {
-						"subject": ((node_settings["registration_email"] ?? {})["subject"] ?? "Mmeber registered"),
-						"body": ((node_settings["registration_email"] ?? {})["body"] ?? "URL: {{url}}"),
-					},
-					"activation_email": {
-						"subject": ((node_settings["activation_email"] ?? {})["subject"] ?? "Account activated"),
-						"body": ((node_settings["activation_email"] ?? {})["body"] ?? "URL: {{url}}\n\nLogin name: {{name_login}}\n\n"),
+					"organisation": {
+						"name": ((node_settings["organisation"] ?? {})["name"] ?? "Example Orginsation"), // TODO: mandatory?
+						"domain": ((node_settings["organisation"] ?? {})["domain"] ?? "example.org"), // TODO: mandatory?
 					},
+					"misc": (
+						((node_settings_misc) => ({
+							"prefix_for_veiled_email_addresses": (node_settings_misc["prefix_for_veiled_email_addresses"] ?? "member-"),
+							"facultative_membership_number": (node_settings_misc["facultative_membership_number"] ?? false),
+						})) (node_settings["misc"] ?? {})
+					),
+					"summon_email": (
+						((node_settings_summon_email) => ({
+							"remark": (node_settings_summon_email["remark"] ?? null),
+						})) (node_settings["summon_email"] ?? {})
+					),
 					"password_policy": (
 						((node_settings_password_policy) => ({
 							"minimum_length": (
@@ -295,14 +285,6 @@ namespace _espe.conf
 					"password_change": (
 						((node_settings_password_change) => ({
 							"cooldown_time": (node_settings_password_change["cooldown_time"] ?? 86400),
-							"initialization_email": {
-								"subject": ((node_settings_password_change["initialization_email"] ?? {})["subject"] ?? "Password change initialized"),
-								"body": ((node_settings_password_change["initialization_email"] ?? {})["body"] ?? "{{url}}"),
-							},
-							"execution_email": {
-								"subject": ((node_settings_password_change["execution_email"] ?? {})["subject"] ?? "Password changed"),
-								"body": ((node_settings_password_change["execution_email"] ?? {})["body"] ?? ""),
-							},
 						})) (node_settings["password_change"] ?? {})
 					),
 					"name_index": (
@@ -311,6 +293,12 @@ namespace _espe.conf
 							"salt": (node_settings_password_policy["salt"] ?? null),
 						})) (node_settings["name_index"] ?? {})
 					),
+					"connections": (
+						((node_settings_connections) => ({
+							"frontend_url_base": (node_settings_connections["frontend_url_base"] ?? null),
+							"login_url": (node_settings_connections["login_url"] ?? null),
+						})) (node_settings["connections"] ?? {})
+					),
 				})) (conf_raw["settings"] ?? {})
 			),
 			"admins": (conf_raw["admins"] ?? []),
diff --git a/source/data/localization/deu.loc.json b/source/data/localization/deu.loc.json
new file mode 100644
index 0000000..3508bd2
--- /dev/null
+++ b/source/data/localization/deu.loc.json
@@ -0,0 +1,26 @@
+{
+	"meta": {
+		"identifier": "deu"
+	},
+	"tree": {
+		"email.summon.subject": "Registrierung",
+		"email.summon.body": "Hi, {{name}}\n\n{{remark}}\n\nWenn du die Dienste nutzen möchtest, rufe bitte folgende Adresse auf:\n\n{{url}}",
+		"email.registration.subject": "Registrierung erfolgt",
+		"email.registration.body": "Das Mitglied '{{name_display}}' hat sich soeben registriert:\n\n{{url}}",
+		"email.activation.subject": "Freischaltung erfolgt",
+		"email.activation.body": "Hi, {{name_display}}\n\nDein Mitglieder-Konto wurde gerade freigeschalten. Du kannst dich nun anmelden:\n\nURL: {{url}}\nAnmelde-Name: {{name_login}}",
+		"email.password_change.initialization.subject": "Passwort-Änderung eingeleitet",
+		"email.password_change.initialization.body": "Hi, {{name}}\n\nDie Funktion zum Ändern deines Passwortes wurde aufgerufen. Wenn du dein Passwort ändern willst, rufe folgenden Link auf:\n\n{{url}}\n",
+		"email.password_change.execution.subject": "Passwort-Änderung abgeschlossen",
+		"email.password_change.execution.body": "Hi, {{name}}\n\nDein Passwort wurde soeben geändert.\n",
+		"help.args.action.description": "auszuführende Aktion; Auswahl",
+		"help.args.action.options.serve": "Server starten",
+		"help.args.action.options.api_doc": "API-Dokumentation gemäß OpenAPI-Spezifikation auf Standard-Ausgabe schreiben",
+		"help.args.action.options.expose_conf": "Vollständige Konfiguration ausgeben",
+		"help.args.action.options.password_image": "Passwort-Abbild errechnen und auf Standard-Ausgabe schreiben",
+		"help.args.action.options.export_authelia": "Export der Nutzer-Datenbank im Authelia-user-Datei-Format auf Standard-Ausgabe schreiben",
+		"help.args.action.options.help": "Diese Hilfe auf Standard-Ausgabe schreiben",
+		"help.args.conf_path.description": "Pfad zur Konfigurations-Datei",
+		"help.args.help.description": "Hilfe anzeigen"
+	}
+}
diff --git a/source/data/localization/eng.loc.json b/source/data/localization/eng.loc.json
new file mode 100644
index 0000000..b646b39
--- /dev/null
+++ b/source/data/localization/eng.loc.json
@@ -0,0 +1,26 @@
+{
+	"meta": {
+		"identifier": "eng"
+	},
+	"tree": {
+		"email.summon.subject": "Registration",
+		"email.summon.body": "Hi, {{name}}\n\n{{remark}}\n\nIn case you want to use online service, open the following link:\n\n{{url}}",
+		"email.registration.subject": "Registration received",
+		"email.registration.body": "The member '{{name_display}}' just registered:\n\n{{url}}",
+		"email.activation.subject": "Activated",
+		"email.activation.body": "Hi, {{name_display}}\n\nYour account has just been activated. You may login now:\n\nURL: {{url}}\nLogin name: {{name_login}}",
+		"email.password_change.initialization.subject": "Password change initialized",
+		"email.password_change.initialization.body": "Hi, {{name}}\n\nThe function for changing your password has been triggered. If you want to change your password, open the folloling link:\n\n{{url}}",
+		"email.password_change.execution.subject": "Password change concluded",
+		"email.password_change.execution.body": "Hi, {{name}}\n\nYour password has just been changed.\n",
+		"help.args.action.description": "action to executo; options",
+		"help.args.action.options.serve": "start server",
+		"help.args.action.options.api_doc": "write API documentation according to OpenAPI specification to stdout",
+		"help.args.action.options.expose_conf": "write complete configuration to stdout",
+		"help.args.action.options.password_image": "compute password image and write to stdout",
+		"help.args.action.options.export_authelia": "export user database in Authelia user file format and write to stdout",
+		"help.args.action.options.help": "write this help to stdout",
+		"help.args.conf_path.description": "path to configuration file",
+		"help.args.help.description": "show help"
+	}
+}
diff --git a/source/helpers.ts b/source/helpers.ts
index fd76e3a..4896501 100644
--- a/source/helpers.ts
+++ b/source/helpers.ts
@@ -274,9 +274,9 @@ namespace _espe.helpers
 	export function frontend_url_check(
 	) : void
 	{
-		const frontend_url_base : (null | string) = _espe.conf.get().settings.frontend_url_base;
+		const frontend_url_base : (null | string) = _espe.conf.get().settings.connections.frontend_url_base;
 		if (frontend_url_base === null) {
-			throw (new Error("no frontend url base set; add in conf as 'settings.frontend_url_base'!"));
+			throw (new Error("no frontend url base set; add in conf as 'settings.connections.frontend_url_base'!"));
 		}
 		else {
 			// do nothing
@@ -291,9 +291,9 @@ namespace _espe.helpers
 		arguments_ : Record<string, string>
 	) : (null | string)
 	{
-		const frontend_url_base : (null | string) = _espe.conf.get().settings.frontend_url_base;
+		const frontend_url_base : (null | string) = _espe.conf.get().settings.connections.frontend_url_base;
 		if (frontend_url_base === null) {
-			// throw (new Error("no frontend url base set; add in conf as 'settings.frontend_url_base'!"));
+			// throw (new Error("no frontend url base set; add in conf as 'settings.connections.frontend_url_base'!"));
 			return null;
 		}
 		else {
diff --git a/source/main.ts b/source/main.ts
index 9de2b8a..78a59e3 100644
--- a/source/main.ts
+++ b/source/main.ts
@@ -20,6 +20,19 @@ async function main(
 	args_raw : Array<string>
 ) : Promise<void>
 {
+	// init
+	await lib_plankton.translate.initialize(
+		{
+			"verbosity": 1,
+			"packages": [
+				JSON.parse(await lib_plankton.file.read("data/localization/deu.loc.json")),
+				JSON.parse(await lib_plankton.file.read("data/localization/eng.loc.json")),
+			],
+			"order": ["deu", "eng"],
+			"autopromote": false,
+		}
+	);
+	
 	// args
 	const arg_handler : lib_plankton.args.class_handler = new lib_plankton.args.class_handler({
 		"action": lib_plankton.args.class_argument.positional({
@@ -29,33 +42,34 @@ async function main(
 			"default": "serve",
 			"name": "action",
 			"info": lib_plankton.string.coin(
-				"auszuführende Aktion; Auswahl:\n{{selection}}\n\t\t",
+				"{{description}}:\n{{options}}\n\t\t",
 				{
-					"selection": (
+					"description": lib_plankton.translate.get("help.args.action.options.serve"),
+					"options": (
 						[
 							{
 								"name": "serve",
-								"description": "Server starten",
+								"description": lib_plankton.translate.get("help.args.action.options.serve"),
 							},
 							{
 								"name": "api-doc",
-								"description": "API-Dokumentation gemäß OpenAPI Specification auf Standard-Ausgabe schreiben"
+								"description": lib_plankton.translate.get("help.args.action.options.api_doc")
 							},
 							{
 								"name": "expose-conf",
-								"description": "Vollständige Konfiguration ausgeben"
+								"description": lib_plankton.translate.get("help.args.action.options.expose_conf")
 							},
 							{
 								"name": "password-image",
-								"description": "Passwort-Abbild errechnen und auf Standard-Ausgabe schreiben"
+								"description": lib_plankton.translate.get("help.args.action.options.password_image")
 							},
 							{
 								"name": "export-authelia",
-								"description": "Export der Nutzer-Datenbank im Authelia-user-Datei-Format auf Standard-Ausgabe schreiben"
+								"description": lib_plankton.translate.get("help.args.action.options.export_authelia")
 							},
 							{
 								"name": "help",
-								"description": "Diese Hilfe auf Standard-Ausgabe schreiben"
+								"description": lib_plankton.translate.get("help.args.action.options.help")
 							},
 						]
 						.map(
@@ -96,7 +110,7 @@ async function main(
 			"type": lib_plankton.args.enum_type.string,
 			"mode": lib_plankton.args.enum_mode.replace,
 			"default": "conf.json",
-			"info": "Pfad zur Konfigurations-Datei",
+			"info": lib_plankton.translate.get("help.args.conf_path.description"),
 			"name": "conf-path",
 		}),
 		"help": lib_plankton.args.class_argument.volatile({
@@ -105,14 +119,38 @@ async function main(
 			"type": lib_plankton.args.enum_type.boolean,
 			"mode": lib_plankton.args.enum_mode.replace,
 			"default": false,
-			"info": "Hilfe anzeigen",
+			"info": lib_plankton.translate.get("help.args.help.description"),
 			"name": "help",
 		}),
 	});
 	const args : Record<string, any> = arg_handler.read(lib_plankton.args.enum_environment.cli, args_raw.join(" "));	
 	
+	// init
+	await _espe.conf.load(args["conf_path"]);
+	if (_espe.conf.get().general.language === null) {
+		// do nothing
+	}
+	else {
+		lib_plankton.translate.promote(_espe.conf.get().general.language);
+	}
+	lib_plankton.log.conf_push(
+		[
+			new lib_plankton.log.class_channel_minlevel(
+				new lib_plankton.log.class_channel_stdout(),
+				{
+					"none": lib_plankton.log.enum_level.error,
+					"error": lib_plankton.log.enum_level.error,
+					"warning": lib_plankton.log.enum_level.warning,
+					"notice": lib_plankton.log.enum_level.notice,
+					"info": lib_plankton.log.enum_level.info,
+					"debug":lib_plankton.log.enum_level.debug,
+				}[_espe.conf.get().general.verbosity]
+			),
+		]
+	);
+	
 	// exec
-	if (args["help"] || (args["action"] == "help")) {
+	if (args["help"] || (args["action"] === "help")) {
 		process.stdout.write(
 			arg_handler.generate_help(
 				{
@@ -126,26 +164,6 @@ async function main(
 		);
 	}
 	else {
-		// conf
-		await _espe.conf.load(args["conf_path"]);
-		
-		// setup
-		lib_plankton.log.conf_push(
-			[
-				new lib_plankton.log.class_channel_minlevel(
-					new lib_plankton.log.class_channel_stdout(),
-					{
-						"none": lib_plankton.log.enum_level.error,
-						"error": lib_plankton.log.enum_level.error,
-						"warning": lib_plankton.log.enum_level.warning,
-						"notice": lib_plankton.log.enum_level.notice,
-						"info": lib_plankton.log.enum_level.info,
-						"debug":lib_plankton.log.enum_level.debug,
-					}[_espe.conf.get().general.verbosity]
-				),
-			]
-		);
-		
 		switch (args["action"]) {
 			default: {
 				process.stderr.write("invalid action: " + args["action"] + "\n");
diff --git a/source/services/member.ts b/source/services/member.ts
index bfdf03f..d2824a3 100644
--- a/source/services/member.ts
+++ b/source/services/member.ts
@@ -188,9 +188,9 @@ namespace _espe.service.member
 			: lib_plankton.string.coin(
 				"{{prefix}}{{membership_number}}@{{domain}}",
 				{
-					"prefix": _espe.conf.get().settings.prefix_for_nominal_email_addresses,
+					"prefix": _espe.conf.get().settings.misc.prefix_for_veiled_email_addresses,
 					"membership_number": object.membership_number,
-					"domain": _espe.conf.get().settings.target_domain,
+					"domain": _espe.conf.get().settings.organisation.domain,
 				}
 			)
 		);
@@ -208,7 +208,7 @@ namespace _espe.service.member
 			"{{user}}@{{domain}}",
 			{
 				"user": name_login(object),
-				"domain": _espe.conf.get().settings.target_domain,
+				"domain": _espe.conf.get().settings.organisation.domain,
 			}
 		);
 	}
@@ -270,13 +270,19 @@ namespace _espe.service.member
 					[
 						member_object.email_address_private,
 					],
-					_espe.conf.get().settings.activation_email.subject,
 					lib_plankton.string.coin(
-						_espe.conf.get().settings.activation_email.body,
+						"{{head}} | {{core}}",
+						{
+							"head": _espe.conf.get().settings.organisation.name,
+							"core": lib_plankton.translate.get("email.activation.subject"),
+						}
+					),
+					lib_plankton.string.coin(
+						lib_plankton.translate.get("email.activation.body"),
 						{
 							"name_display": name_display(member_object),
 							"name_login": name_login(member_object),
-							"url": (_espe.conf.get().settings.login_url ?? "--"),
+							"url": (_espe.conf.get().settings.connections.login_url ?? "--"),
 						}
 					)
 				);
@@ -397,12 +403,23 @@ namespace _espe.service.member
 					[
 						member_object.email_address_private,
 					],
-					_espe.conf.get().settings.summon_email.subject,
 					lib_plankton.string.coin(
-						_espe.conf.get().settings.summon_email.body,
+						"{{head}} | {{core}}",
+						{
+							"head": _espe.conf.get().settings.organisation.name,
+							"core": lib_plankton.translate.get("email.summon.subject"),
+						}
+					),
+					lib_plankton.string.coin(
+						lib_plankton.translate.get("email.summon.body"),
 						{
 							"name": name_display(member_object),
 							"url": url,
+							"remark": (
+								(_espe.conf.get().settings.summon_email.remark === null)
+								? ""
+								: (_espe.conf.get().settings.summon_email.remark + "\n\n")
+							),
 						}
 					)
 				);
@@ -529,9 +546,15 @@ namespace _espe.service.member
 				}
 				else {
 					/*await*/ _espe.helpers.notify_admins(
-						_espe.conf.get().settings.registration_email.subject,
 						lib_plankton.string.coin(
-							_espe.conf.get().settings.registration_email.body,
+							"{{head}} | {{core}}",
+							{
+								"head": _espe.conf.get().settings.organisation.name,
+								"core": lib_plankton.translate.get("email.registration.subject"),
+							}
+						),
+						lib_plankton.string.coin(
+							lib_plankton.translate.get("email.registration.body"),
 							{
 								"name_display": name_display(member_object),
 								"url": url,
@@ -680,9 +703,15 @@ namespace _espe.service.member
 							[
 								member_object_old.email_address_private,
 							],
-							_espe.conf.get().settings.password_change.initialization_email.subject,
 							lib_plankton.string.coin(
-								_espe.conf.get().settings.password_change.initialization_email.body,
+								"{{head}} | {{core}}",
+								{
+									"head": _espe.conf.get().settings.organisation.name,
+									"core": lib_plankton.translate.get("email.password_change.initialization.subject"),
+								}
+							),
+							lib_plankton.string.coin(
+								lib_plankton.translate.get("email.password_change.initialization.body"),
 								{
 									"name": name_display(member_object_old),
 									"url": url,
@@ -757,9 +786,15 @@ namespace _espe.service.member
 						[
 							member_object_old.email_address_private,
 						],
-						_espe.conf.get().settings.password_change.execution_email.subject,
 						lib_plankton.string.coin(
-							_espe.conf.get().settings.password_change.execution_email.body,
+							"{{head}} | {{core}}",
+							{
+								"head": _espe.conf.get().settings.organisation.name,
+								"core": lib_plankton.translate.get("email.password_change.execution.subject"),
+							}
+						),
+						lib_plankton.string.coin(
+							lib_plankton.translate.get("email.password_change.execution.body"),
 							{
 								"name": name_display(member_object_old),
 							}
diff --git a/todo.md b/todo.md
deleted file mode 100644
index e0653eb..0000000
--- a/todo.md
+++ /dev/null
@@ -1,4 +0,0 @@
-# ToDo
-
-- Übersetzungen
-
diff --git a/tools/makefile b/tools/makefile
index 671b6e1..38f63a2 100644
--- a/tools/makefile
+++ b/tools/makefile
@@ -71,7 +71,7 @@ ${dir_temp}/espe-core.js ${dir_temp}/espe-core.d.ts: \
 	@ tsc --lib es2020 --strict $^ --outFile ${dir_temp}/espe-core.js --declaration
 
 .PHONY: main
-main: core ${dir_build}/espe
+main: core ${dir_build}/espe data
 
 ${dir_temp}/espe-main-raw.js: \
 		${dir_lib}/plankton/plankton.d.ts \
@@ -118,3 +118,9 @@ ${dir_build}/espe-test.mocha.js: \
 	@ ${cmd_mkdir} $(dir $@)
 	@ ${cmd_cat} $^ > $@
 	@ ${cmd_chmod} +x $@
+
+.PHONY: data
+data:
+	@ ${cmd_log} "data …"
+	@ ${cmd_mkdir} ${dir_build}/data
+	@ ${cmd_cp} -r -u -v ${dir_source}/data/* ${dir_build}/data/