diff --git a/discordbot/__init__.py b/discordbot/__init__.py
index c01b2f5..f52375f 100644
--- a/discordbot/__init__.py
+++ b/discordbot/__init__.py
@@ -6,9 +6,10 @@ import random
 from database import db
 from database.helpers import ConfigurationHelper
 from database.models import Configuration, Humeur, Commande
-from discord import Message, TextChannel
+from discord import Message, TextChannel, Member
 from discordbot.humblebundle import checkHumbleBundleAndNotify
 from discordbot.command import handle_warning_command, handle_remove_warning_command, handle_list_warnings_command, handle_ban_command, handle_kick_command, handle_unban_command
+from discordbot.welcome import sendWelcomeMessage, sendLeaveMessage, updateInviteCache
 from protondb import searhProtonDb
 
 class DiscordBot(discord.Client):
@@ -17,6 +18,9 @@ class DiscordBot(discord.Client):
 		for c in self.get_all_channels() :
 			logging.info(f'{c.id} {c.name}')
 		
+		for guild in self.guilds:
+			await updateInviteCache(guild)
+		
 		self.loop.create_task(self.updateStatus())
 		self.loop.create_task(self.updateHumbleBundle())
 	
@@ -54,6 +58,8 @@ class DiscordBot(discord.Client):
 
 intents = discord.Intents.default()
 intents.message_content = True
+intents.members = True
+intents.invites = True
 bot = DiscordBot(intents=intents)
 
 # https://discordpy.readthedocs.io/en/stable/quickstart.html
@@ -121,4 +127,20 @@ async def on_message(message: Message):
 			await message.channel.send(msg, suppress_embeds=True)
 		except Exception as e:
 			logging.error(f'Échec de l\'envoi du message ProtonDB : {e}')
-		
+
+@bot.event
+async def on_member_join(member: Member):
+	await sendWelcomeMessage(bot, member)
+
+@bot.event
+async def on_member_remove(member: Member):
+	await sendLeaveMessage(bot, member)
+
+@bot.event
+async def on_invite_create(invite):
+	await updateInviteCache(invite.guild)
+
+@bot.event
+async def on_invite_delete(invite):
+	await updateInviteCache(invite.guild)
+
diff --git a/discordbot/welcome.py b/discordbot/welcome.py
new file mode 100644
index 0000000..cc61f89
--- /dev/null
+++ b/discordbot/welcome.py
@@ -0,0 +1,147 @@
+import discord
+import logging
+from database.helpers import ConfigurationHelper
+from discord import Member, TextChannel
+from datetime import datetime, timezone
+
+invite_cache = {}
+
+async def updateInviteCache(guild):
+	try:
+		invites = await guild.invites()
+		invite_cache[guild.id] = {invite.code: invite.uses for invite in invites}
+	except:
+		pass
+
+async def getUsedInvite(guild) -> str:
+	try:
+		new_invites = await guild.invites()
+		for invite in new_invites:
+			old_uses = invite_cache.get(guild.id, {}).get(invite.code, 0)
+			if invite.uses > old_uses:
+				await updateInviteCache(guild)
+				inviter = f' (créée par {invite.inviter.name})' if invite.inviter else ''
+				return f'`{invite.code}`{inviter}'
+		await updateInviteCache(guild)
+	except:
+		pass
+	return 'Inconnue'
+
+async def sendWelcomeMessage(bot: discord.Client, member: Member):
+	config = ConfigurationHelper()
+	
+	if not config.getValue('welcome_enable'):
+		return
+	
+	channel_id = config.getIntValue('welcome_channel_id')
+	if not channel_id:
+		logging.warning('Canal de bienvenue non configuré')
+		return
+	
+	channel = bot.get_channel(channel_id)
+	if not channel or not isinstance(channel, TextChannel):
+		logging.error(f'Canal de bienvenue {channel_id} introuvable')
+		return
+	
+	welcome_message = config.getValue('welcome_message')
+	if not welcome_message:
+		welcome_message = 'Bienvenue sur le serveur !'
+	
+	invite_used = await getUsedInvite(member.guild)
+	
+	embed = discord.Embed(
+		title='🎉 Nouveau membre !',
+		description=welcome_message,
+		color=discord.Color.green()
+	)
+	
+	embed.set_thumbnail(url=member.display_avatar.url)
+	embed.add_field(name='Membre', value=member.mention, inline=True)
+	embed.add_field(name='Nombre de membres', value=str(member.guild.member_count), inline=True)
+	embed.add_field(name='Invitation utilisée', value=invite_used, inline=False)
+	embed.set_footer(text=f'ID: {member.id}')
+	
+	try:
+		await channel.send(embed=embed)
+		logging.info(f'Message de bienvenue envoyé pour {member.name}')
+	except Exception as e:
+		logging.error(f'Échec de l\'envoi du message de bienvenue : {e}')
+
+def formatDuration(seconds: int) -> str:
+	days = seconds // 86400
+	hours = (seconds % 86400) // 3600
+	minutes = (seconds % 3600) // 60
+	
+	parts = []
+	if days > 0:
+		parts.append(f'{days} jour{"s" if days > 1 else ""}')
+	if hours > 0:
+		parts.append(f'{hours} heure{"s" if hours > 1 else ""}')
+	if minutes > 0:
+		parts.append(f'{minutes} minute{"s" if minutes > 1 else ""}')
+	
+	if not parts:
+		return 'moins d\'une minute'
+	
+	return ' et '.join(parts)
+
+async def sendLeaveMessage(bot: discord.Client, member: Member):
+	config = ConfigurationHelper()
+	
+	if not config.getValue('leave_enable'):
+		return
+	
+	channel_id = config.getIntValue('leave_channel_id')
+	if not channel_id:
+		logging.warning('Canal de départ non configuré')
+		return
+	
+	channel = bot.get_channel(channel_id)
+	if not channel or not isinstance(channel, TextChannel):
+		logging.error(f'Canal de départ {channel_id} introuvable')
+		return
+	
+	leave_message = config.getValue('leave_message')
+	if not leave_message:
+		leave_message = 'Un membre a quitté le serveur.'
+	
+	now = datetime.now(timezone.utc)
+	duration_seconds = int((now - member.joined_at).total_seconds()) if member.joined_at else 0
+	duration_text = formatDuration(duration_seconds)
+	
+	reason = 'Départ volontaire'
+	try:
+		async for entry in member.guild.audit_logs(limit=5):
+			if entry.target and entry.target.id == member.id:
+				if entry.action == discord.AuditLogAction.kick:
+					reason = f'Expulsé par {entry.user.mention}'
+					if entry.reason:
+						reason += f' - Raison: {entry.reason}'
+					break
+				elif entry.action == discord.AuditLogAction.ban:
+					reason = f'Banni par {entry.user.mention}'
+					if entry.reason:
+						reason += f' - Raison: {entry.reason}'
+					break
+	except:
+		pass
+	
+	embed = discord.Embed(
+		title='👋 Membre parti',
+		description=leave_message,
+		color=discord.Color.red()
+	)
+	
+	embed.set_thumbnail(url=member.display_avatar.url)
+	embed.add_field(name='Membre', value=f'{member.mention} ({member.name})', inline=True)
+	embed.add_field(name='Nombre de membres', value=str(member.guild.member_count), inline=True)
+	embed.add_field(name='Temps sur le serveur', value=duration_text, inline=False)
+	embed.add_field(name='Raison', value=reason, inline=False)
+	embed.set_footer(text=f'ID: {member.id}')
+	
+	try:
+		await channel.send(embed=embed)
+		logging.info(f'Message de départ envoyé pour {member.name}')
+	except Exception as e:
+		logging.error(f'Échec de l\'envoi du message de départ : {e}')
+
diff --git a/webapp/configurations.py b/webapp/configurations.py
index fbe53d1..67ec524 100644
--- a/webapp/configurations.py
+++ b/webapp/configurations.py
@@ -23,6 +23,10 @@ def updateConfiguration():
 		ConfigurationHelper().createOrUpdate('moderation_ban_enable', False)
 	if (request.form.get("moderation_staff_role_id") != None and request.form.get("moderation_kick_enable") == None) :
 		ConfigurationHelper().createOrUpdate('moderation_kick_enable', False)
+	if (request.form.get("welcome_channel_id") != None and request.form.get("welcome_enable") == None) :
+		ConfigurationHelper().createOrUpdate('welcome_enable', False)
+	if (request.form.get("leave_channel_id") != None and request.form.get("leave_enable") == None) :
+		ConfigurationHelper().createOrUpdate('leave_enable', False)
 	db.session.commit()
 	return redirect(request.referrer)
 
diff --git a/webapp/templates/configurations.html b/webapp/templates/configurations.html
index 47a465c..f0690c2 100644
--- a/webapp/templates/configurations.html
+++ b/webapp/templates/configurations.html
@@ -4,7 +4,9 @@
 <h1>Configuration de Mamie</h1>
 <p>Configurez les tokens Discord, les notifications Humble Bundle et l'API ProtonDB pour la commande !protondb.</p>
 
-<h2>API Discord</h2>
+<h2>Discord</h2>
+
+<h3>API Discord</h3>
 <form action="{{ url_for('updateConfiguration') }}" method="POST">
 	<label for="discord_token">API Discord (cachée)</label>
 	<input name="discord_token" type="password" />
@@ -12,6 +14,72 @@
 	<p>Nécessite un redémarrage</p>
 </form>
 
+<h3>Message de bienvenue Discord</h3>
+<form action="{{ url_for('updateConfiguration') }}" method="POST">
+	<label for="welcome_enable">Activer</label>
+	<input type="checkbox" name="welcome_enable" {% if configuration.getValue('welcome_enable') %}
+		checked="checked" {% endif %}>
+	<label>Activer le message de bienvenue pour les nouveaux membres</label>
+	<label for="welcome_channel_id">Canal de bienvenue</label>
+	<select name="welcome_channel_id">
+		{% for channel in channels %}
+		<option value="{{channel.id}}" {% if configuration.getIntValue('welcome_channel_id')==channel.id %}
+			selected="selected" {% endif %}>
+			{{channel.name}}</option>
+		{% endfor %}
+	</select>
+	<label for="welcome_message">Message personnalisé</label>
+	<textarea name="welcome_message" rows="4" placeholder="Bienvenue sur le serveur !">{{ configuration.getValue('welcome_message') }}</textarea>
+	<input type="Submit" value="Définir">
+</form>
+
+<h3>Message de départ Discord</h3>
+<form action="{{ url_for('updateConfiguration') }}" method="POST">
+	<label for="leave_enable">Activer</label>
+	<input type="checkbox" name="leave_enable" {% if configuration.getValue('leave_enable') %}
+		checked="checked" {% endif %}>
+	<label>Activer le message de départ quand un membre quitte le serveur</label>
+	<label for="leave_channel_id">Canal de départ</label>
+	<select name="leave_channel_id">
+		{% for channel in channels %}
+		<option value="{{channel.id}}" {% if configuration.getIntValue('leave_channel_id')==channel.id %}
+			selected="selected" {% endif %}>
+			{{channel.name}}</option>
+		{% endfor %}
+	</select>
+	<label for="leave_message">Message personnalisé</label>
+	<textarea name="leave_message" rows="4" placeholder="Un membre a quitté le serveur.">{{ configuration.getValue('leave_message') }}</textarea>
+	<input type="Submit" value="Définir">
+</form>
+
+<h3>Modération Discord</h3>
+<form action="{{ url_for('updateConfiguration') }}" method="POST">
+	<label for="moderation_enable">Activer les avertissements</label>
+	<input type="checkbox" name="moderation_enable" {% if configuration.getValue('moderation_enable') %}
+		checked="checked" {% endif %}>
+	<label>Activer les commandes d'avertissement (!averto, !delaverto, !listaverto)</label>
+	
+	<label for="moderation_ban_enable">Activer le ban</label>
+	<input type="checkbox" name="moderation_ban_enable" {% if configuration.getValue('moderation_ban_enable') %}
+		checked="checked" {% endif %}>
+	<label>Activer les commandes de bannissement (!ban, !unban)</label>
+	
+	<label for="moderation_kick_enable">Activer le kick</label>
+	<input type="checkbox" name="moderation_kick_enable" {% if configuration.getValue('moderation_kick_enable') %}
+		checked="checked" {% endif %}>
+	<label>Activer la commande d'expulsion (!kick)</label>
+	
+	<label for="moderation_staff_role_id">ID du rôle Staff</label>
+	<input name="moderation_staff_role_id" type="text" value="{{ configuration.getValue('moderation_staff_role_id') }}"
+		placeholder="581990740431732738" />
+	
+	<label for="moderation_embed_delete_delay">Délai de suppression des embeds (en secondes, 0 = ne pas supprimer)</label>
+	<input name="moderation_embed_delete_delay" type="number" value="{{ configuration.getValue('moderation_embed_delete_delay') or '0' }}"
+		placeholder="0" min="0" />
+	
+	<input type="Submit" value="Définir">
+</form>
+
 <h2>API Twitch</h2>
 <form action="{{ url_for('updateConfiguration') }}" method="POST">
 	<label for="twitch_client_id">Client ID</label>
@@ -55,32 +123,4 @@
 	</select>
 	<input type="Submit" value="Définir">
 </form>
-
-<h2>Modération Discord</h2>
-<form action="{{ url_for('updateConfiguration') }}" method="POST">
-	<label for="moderation_enable">Activer les avertissements</label>
-	<input type="checkbox" name="moderation_enable" {% if configuration.getValue('moderation_enable') %}
-		checked="checked" {% endif %}>
-	<label>Activer les commandes d'avertissement (!averto, !delaverto, !listaverto)</label>
-	
-	<label for="moderation_ban_enable">Activer le ban</label>
-	<input type="checkbox" name="moderation_ban_enable" {% if configuration.getValue('moderation_ban_enable') %}
-		checked="checked" {% endif %}>
-	<label>Activer les commandes de bannissement (!ban, !unban)</label>
-	
-	<label for="moderation_kick_enable">Activer le kick</label>
-	<input type="checkbox" name="moderation_kick_enable" {% if configuration.getValue('moderation_kick_enable') %}
-		checked="checked" {% endif %}>
-	<label>Activer la commande d'expulsion (!kick)</label>
-	
-	<label for="moderation_staff_role_id">ID du rôle Staff</label>
-	<input name="moderation_staff_role_id" type="text" value="{{ configuration.getValue('moderation_staff_role_id') }}"
-		placeholder="581990740431732738" />
-	
-	<label for="moderation_embed_delete_delay">Délai de suppression des embeds (en secondes, 0 = ne pas supprimer)</label>
-	<input name="moderation_embed_delete_delay" type="number" value="{{ configuration.getValue('moderation_embed_delete_delay') or '0' }}"
-		placeholder="0" min="0" />
-	
-	<input type="Submit" value="Définir">
-</form>
 {% endblock %}
\ No newline at end of file