diff --git a/api/routes/accountRoute.js b/api/routes/accountRoute.js
index 494c5ff..e9da830 100644
--- a/api/routes/accountRoute.js
+++ b/api/routes/accountRoute.js
@@ -2,10 +2,12 @@ const express = require('express');
 const router = express.Router();
 const bcrypt = require('bcryptjs');
 
-const Account = require('../models/accountModel');
 const { saltingRounds } = require('../../config/config');
+const { authenticate } = require('../../middlewares/authMiddleware');
+const Account = require('../models/accountModel');
 
 router.post('/', async (req, res) => {
+	// TODO : remove if unused
 	const data = { ...req.body };
 	const hash = bcrypt.hashSync(data.password, saltingRounds);
 	data.password = hash;
@@ -18,16 +20,15 @@ router.post('/', async (req, res) => {
 	}
 });
 
-router.put('/:id', async (req, res) => {
+router.put('/:id', authenticate, async (req, res) => {
 	const data = { ...req.body };
 	const id = req.params.id;
 
-	if (data.password) {
-		const hash = bcrypt.hashSync(data.password, 10);
-		data.password = hash;
-	}
-
 	try {
+		if (data.password) {
+			const hash = bcrypt.hashSync(data.password, 10);
+			data.password = hash;
+		}
 		const account = await Account.updateAccount(data, id);
 		res.status(200).json(...account);
 	} catch (error) {
@@ -38,7 +39,7 @@ router.put('/:id', async (req, res) => {
 	}
 });
 
-router.delete('/:id', async (req, res) => {
+router.delete('/:id', authenticate, async (req, res) => {
 	const id = req.params.id;
 
 	try {
@@ -54,40 +55,41 @@ router.delete('/:id', async (req, res) => {
 	}
 });
 
-router.get('/:id/meetings', async (req, res) => {
+router.get('/:id/meetings', authenticate, async (req, res) => {
 	const { id } = req.params;
 
 	try {
 		const meetings = await Account.getMeetingsByAccountId(id);
-		res.status(200).json(meetings);
+		if (meetings.length == 0) {
+			res.status(200).json({
+				message: `There are no meetings for account with id ${id}.`,
+			});
+		} else {
+			res.status(200).json(meetings);
+		}
 	} catch (error) {
 		res.status(500).json({
-			message: `Couldn't get meetings for account with id ${id}.`,
+			message: `Failed to fetch meetings with account id ${id}.`,
 			error,
 		});
 	}
 });
 
-router.get('/:id', async (req, res) => {
+router.get('/:id', authenticate, async (req, res) => {
 	const id = req.params.id;
 
 	try {
 		const account = await Account.getAccountById(id);
-		res.status(200).json(account);
-	} catch (error) {
-		res.status(500).json({ message: "Account doesn't exist.", error });
-	}
-});
-
-router.get('/:email', async (req, res) => {
-	const email = req.params.email;
-
-	try {
-		const account = await Account.getAccountByEmail(email);
-		res.status(200).json(account);
+		if (typeof account == 'undefined') {
+			res.status(404).json({
+				message: `Account with id ${id} doesn't exist.`,
+			});
+		} else {
+			res.status(200).json(account);
+		}
 	} catch (error) {
 		res.status(500).json({
-			message: `Account with ${email} doesn't exist.`,
+			message: `Failed to fetch account with id ${id}.`,
 			error,
 		});
 	}
diff --git a/api/routes/authRoute.js b/api/routes/authRoute.js
index 10be4b2..645f3f3 100644
--- a/api/routes/authRoute.js
+++ b/api/routes/authRoute.js
@@ -4,7 +4,7 @@ const bcrypt = require('bcryptjs');
 
 const Account = require('../models/accountModel');
 const { saltingRounds } = require('../../config/config');
-const { generateToken } = require('../../helpers/authJwt');
+const { generateToken } = require('../../helpers/generateToken');
 
 router.post('/register', async (req, res) => {
 	const data = req.body;
@@ -40,7 +40,7 @@ router.post('/login', async (req, res) => {
 		}
 	} catch (error) {
 		res.status(401).json({
-			message: `Invalid Credentials`,
+			message: `Invalid credentials`,
 		});
 	}
 });
diff --git a/api/routes/availibilityRoute.js b/api/routes/availibilityRoute.js
index faa0086..17bc926 100644
--- a/api/routes/availibilityRoute.js
+++ b/api/routes/availibilityRoute.js
@@ -1,9 +1,10 @@
 const express = require('express');
 const router = express.Router();
 
+const { authenticate } = require('../../middlewares/authMiddleware');
 const Availibility = require('../models/availibilityModel');
 
-router.post('/', async (req, res) => {
+router.post('/', authenticate, async (req, res) => {
 	const data = { ...req.body };
 
 	try {
@@ -17,7 +18,7 @@ router.post('/', async (req, res) => {
 	}
 });
 
-router.delete('/:id', async (req, res) => {
+router.delete('/:id', authenticate, async (req, res) => {
 	const id = req.params.id;
 
 	try {
diff --git a/api/routes/meetingRoute.js b/api/routes/meetingRoute.js
index a42a778..801b2d8 100644
--- a/api/routes/meetingRoute.js
+++ b/api/routes/meetingRoute.js
@@ -3,9 +3,10 @@ const router = express.Router();
 const bcrypt = require('bcryptjs');
 const { v4: uuidv4 } = require('uuid');
 
+const { authenticate } = require('../../middlewares/authMiddleware');
 const Meeting = require('../models/meetingModel');
 
-router.post('/', async (req, res) => {
+router.post('/', authenticate, async (req, res) => {
 	id = uuidv4();
 	data = { id, ...req.body };
 
@@ -18,11 +19,11 @@ router.post('/', async (req, res) => {
 		const [meeting] = await Meeting.addMeeting(data);
 		res.status(201).json(meeting);
 	} catch (error) {
-		res.status(500).json({ message: 'Failed to add meeting.', error });
+		res.status(500).json({ message: 'Failed to add new meeting.', error });
 	}
 });
 
-router.put('/:id', async (req, res) => {
+router.put('/:id', authenticate, async (req, res) => {
 	const data = { ...req.body };
 	const id = req.params.id;
 
@@ -42,7 +43,7 @@ router.put('/:id', async (req, res) => {
 	}
 });
 
-router.delete('/:id', async (req, res) => {
+router.delete('/:id', authenticate, async (req, res) => {
 	const id = req.params.id;
 
 	try {
@@ -58,47 +59,104 @@ router.delete('/:id', async (req, res) => {
 	}
 });
 
-router.get('/:id', async (req, res) => {
+router.get('/:id', authenticate, async (req, res) => {
 	const id = req.params.id;
 
 	try {
 		const meeting = await Meeting.getMeetingById(id);
-		res.status(200).json(meeting);
+		if (typeof meeting == 'undefined') {
+			res.status(404).json({
+				message: `Meeting with id ${id} could not be found.`,
+			});
+		} else {
+			res.status(200).json(meeting);
+		}
 	} catch (error) {
-		res.status(500).json({ message: "Meeting doesn't exist.", error });
+		res.status(500).json({
+			message: `Failed to fetch meeting with id ${id}`,
+			error,
+		});
 	}
 });
 
-router.get('/:id/participants', async (req, res) => {
+router.get('/:id/participants', authenticate, async (req, res) => {
 	const id = req.params.id;
 
 	try {
-		const meeting = await Meeting.getParticipantsByMeetingId(id);
-		res.status(200).json(meeting);
+		const meeting = await Meeting.getMeetingById(id);
+		if (typeof meeting == 'undefined') {
+			res.status(404).json({
+				message: `Meeting with id ${id} could not be found.`,
+			});
+		} else {
+			const participants = await Meeting.getParticipantsByMeetingId(id);
+			if (participants.length == 0) {
+				res.status(200).json({
+					message: `There are no participants for meeting with id ${id}.`,
+				});
+			} else {
+				res.status(200).json(participants);
+			}
+		}
 	} catch (error) {
-		res.status(500).json({ message: "Meeting doesn't exist.", error });
+		res.status(500).json({
+			message: `Failed to fetch participants for meeting with id ${id}.`,
+			error,
+		});
 	}
 });
 
-router.get('/:id/possible-dates', async (req, res) => {
+router.get('/:id/possible-dates', authenticate, async (req, res) => {
 	const id = req.params.id;
 
 	try {
-		const meeting = await Meeting.getPossibleDatesByMeetingId(id);
-		res.status(200).json(meeting);
+		const meeting = await Meeting.getMeetingById(id);
+		if (typeof meeting == 'undefined') {
+			res.status(404).json({
+				message: `Meeting with id ${id} could not be found.`,
+			});
+		} else {
+			const possibleDates = await Meeting.getPossibleDatesByMeetingId(id);
+			if (possibleDates.length == 0) {
+				res.status(200).json({
+					message: `There are no possibles dates for meeting with id ${id}.`,
+				});
+			} else {
+				res.status(200).json(possibleDates);
+			}
+		}
 	} catch (error) {
-		res.status(500).json({ message: "Meeting doesn't exist.", error });
+		res.status(500).json({
+			message: `Failed to fetch possible dates for meeting with id ${id}`,
+			error,
+		});
 	}
 });
 
-router.get('/:id/availibility', async (req, res) => {
+router.get('/:id/availibility', authenticate, async (req, res) => {
 	const id = req.params.id;
 
 	try {
-		const meeting = await Meeting.getAvailibilityByMeetingId(id);
-		res.status(200).json(meeting);
+		const meeting = await Meeting.getMeetingById(id);
+		if (typeof meeting == 'undefined') {
+			res.status(404).json({
+				message: `Meeting with id ${id} could not be found.`,
+			});
+		} else {
+			const availibility = await Meeting.getAvailibilityByMeetingId(id);
+			if (availibility.length == 0) {
+				res.status(200).json({
+					message: `There are no possibles dates for meeting with id ${id}.`,
+				});
+			} else {
+				res.status(200).json(availibility);
+			}
+		}
 	} catch (error) {
-		res.status(500).json({ message: "Meeting doesn't exist.", error });
+		res.status(500).json({
+			message: `Failed to fetch availibility for meeting with id ${id}`,
+			error,
+		});
 	}
 });
 
diff --git a/api/routes/participantRoute.js b/api/routes/participantRoute.js
index 3ea7429..5c38cea 100644
--- a/api/routes/participantRoute.js
+++ b/api/routes/participantRoute.js
@@ -1,9 +1,10 @@
 const express = require('express');
 const router = express.Router();
 
+const { authenticate } = require('../../middlewares/authMiddleware');
 const Participant = require('../models/participantModel');
 
-router.post('/', async (req, res) => {
+router.post('/', authenticate, async (req, res) => {
 	const data = { ...req.body };
 
 	try {
@@ -17,7 +18,7 @@ router.post('/', async (req, res) => {
 	}
 });
 
-router.put('/:account_id-:meeting_id', async (req, res) => {
+router.put('/:account_id-:meeting_id', authenticate, async (req, res) => {
 	const data = { ...req.body };
 	const { account_id, meeting_id } = req.params;
 
@@ -36,7 +37,7 @@ router.put('/:account_id-:meeting_id', async (req, res) => {
 	}
 });
 
-router.delete('/:account_id-:meeting_id', async (req, res) => {
+router.delete('/:account_id-:meeting_id', authenticate, async (req, res) => {
 	const { account_id, meeting_id } = req.params;
 
 	try {
@@ -49,13 +50,13 @@ router.delete('/:account_id-:meeting_id', async (req, res) => {
 		});
 	} catch (error) {
 		res.status(500).json({
-			message: 'Failed to delete participant.',
+			message: `Failed to delete participant with id ${account_id}-${meeting_id}.`,
 			error,
 		});
 	}
 });
 
-router.get('/:account_id-:meeting_id', async (req, res) => {
+router.get('/:account_id-:meeting_id', authenticate, async (req, res) => {
 	const { account_id, meeting_id } = req.params;
 
 	try {
@@ -66,7 +67,7 @@ router.get('/:account_id-:meeting_id', async (req, res) => {
 		res.status(200).json(participant);
 	} catch (error) {
 		res.status(500).json({
-			message: `Participant with id ${account_id}-${meeting_id} doesn't exist.`,
+			message: `Failed to get participant with id ${account_id}-${meeting_id}.`,
 			error,
 		});
 	}
diff --git a/api/routes/possibleDateRoute.js b/api/routes/possibleDateRoute.js
index b140eb8..8802f59 100644
--- a/api/routes/possibleDateRoute.js
+++ b/api/routes/possibleDateRoute.js
@@ -1,9 +1,10 @@
 const express = require('express');
 const router = express.Router();
 
+const { authenticate } = require('../../middlewares/authMiddleware');
 const PossibleDate = require('../models/possibleDateModel');
 
-router.post('/', async (req, res) => {
+router.post('/', authenticate, async (req, res) => {
 	const data = { ...req.body };
 
 	try {
@@ -17,7 +18,7 @@ router.post('/', async (req, res) => {
 	}
 });
 
-router.delete('/:id', async (req, res) => {
+router.delete('/:id', authenticate, async (req, res) => {
 	const id = req.params.id;
 
 	try {
diff --git a/helpers/generateToken.js b/helpers/generateToken.js
new file mode 100644
index 0000000..8745adc
--- /dev/null
+++ b/helpers/generateToken.js
@@ -0,0 +1,17 @@
+const jwt = require('jsonwebtoken');
+const { jwt_secret } = require('../config/config');
+
+function generateToken(user) {
+	const payload = {
+		username: user.username,
+		email: user.email,
+	};
+
+	const options = {
+		expiresIn: '30d',
+	};
+
+	return jwt.sign(payload, jwt_secret, options);
+}
+
+exports.generateToken = generateToken;
diff --git a/helpers/authJwt.js b/middlewares/authMiddleware.js
similarity index 64%
rename from helpers/authJwt.js
rename to middlewares/authMiddleware.js
index a6c12dd..9cd4f4e 100644
--- a/helpers/authJwt.js
+++ b/middlewares/authMiddleware.js
@@ -1,24 +1,6 @@
 const jwt = require('jsonwebtoken');
 const { jwt_secret } = require('../config/config');
 
-module.exports = {
-	authenticate,
-	generateToken,
-};
-
-function generateToken(user) {
-	const payload = {
-		username: user.username,
-		email: user.email
-	};
-
-	const options = {
-		expiresIn: '30d',
-	};
-
-	return jwt.sign(payload, jwt_secret, options);
-}
-
 function authenticate(req, res, next) {
 	const token = req.get('Authorization');
 
@@ -34,3 +16,5 @@ function authenticate(req, res, next) {
 		});
 	}
 }
+
+exports.authenticate = authenticate;