diff --git a/bot.py b/bot.py
index 7aa120fdad..edc2e4b319 100644
--- a/bot.py
+++ b/bot.py
@@ -377,6 +377,10 @@ async def wait_for_connected(self) -> None:
     def snippets(self) -> typing.Dict[str, str]:
         return self.config["snippets"]
 
+    @property
+    def args(self) -> typing.Dict[str, str]:
+        return self.config["args"]
+
     @property
     def aliases(self) -> typing.Dict[str, str]:
         return self.config["aliases"]
diff --git a/cogs/modmail.py b/cogs/modmail.py
index cbab46bcb0..f23ad93332 100644
--- a/cogs/modmail.py
+++ b/cogs/modmail.py
@@ -25,6 +25,10 @@
 logger = getLogger(__name__)
 
 
+# Arg names reserved by formatreply commands (channel, recipient, author).
+RESERVED_ARG_NAMES = {"channel", "recipient", "author"}
+
+
 class Modmail(commands.Cog):
     """Commands directly related to Modmail functionality."""
 
@@ -209,7 +213,7 @@ async def snippet(self, ctx, *, name: str.lower = None):
 
         When `{prefix}snippet` is used by itself, this will retrieve
         a list of snippets that are currently set. `{prefix}snippet-name` will show what the
-        snippet point to.
+        snippet points to.
 
         To create a snippet:
         - `{prefix}snippet add snippet-name A pre-defined text.`
@@ -535,6 +539,214 @@ async def snippet_rename(self, ctx, name: str.lower, *, value):
             embed = create_not_found_embed(name, self.bot.snippets.keys(), "Snippet")
         await ctx.send(embed=embed)
 
+    @commands.group(invoke_without_command=True)
+    @checks.has_permissions(PermissionLevel.SUPPORTER)
+    async def args(self, ctx, *, name: str.lower = None):
+        """
+        Create dynamic args for use in replies.
+
+        When `{prefix}args` is used by itself, this will retrieve
+        a list of args that are currently set. `{prefix}args name` will show what the
+        arg points to.
+
+        To create an arg:
+        - `{prefix}args add arg-name A value.`
+
+        You can use your arg in a reply with `{arg-name}`.
+        """
+
+        if name is not None:
+            if name == "compact":
+                embeds = []
+
+                for i, names in enumerate(zip_longest(*(iter(sorted(self.bot.args)),) * 15)):
+                    description = format_description(i, names)
+                    embed = discord.Embed(color=self.bot.main_color, description=description)
+                    embed.set_author(name="Args", icon_url=self.bot.get_guild_icon(guild=ctx.guild, size=128))
+                    embeds.append(embed)
+
+                session = EmbedPaginatorSession(ctx, *embeds)
+                await session.run()
+                return
+
+            if name not in self.bot.args:
+                embed = create_not_found_embed(name, self.bot.args.keys(), "Arg")
+            else:
+                val = self.bot.args[name]
+                embed = discord.Embed(
+                    title=f'Arg - "{name}":',
+                    description=val,
+                    color=self.bot.main_color,
+                )
+            return await ctx.send(embed=embed)
+
+        if not self.bot.args:
+            embed = discord.Embed(
+                color=self.bot.error_color,
+                description="You dont have any args at the moment.",
+            )
+            embed.set_footer(text=f'Check "{self.bot.prefix}help args add" to add an arg.')
+            embed.set_author(
+                name="Args",
+                icon_url=self.bot.get_guild_icon(guild=ctx.guild, size=128),
+            )
+            return await ctx.send(embed=embed)
+
+        embeds = [discord.Embed(color=self.bot.main_color) for _ in range((len(self.bot.args) // 10) + 1)]
+        for embed in embeds:
+            embed.set_author(name="Args", icon_url=self.bot.get_guild_icon(guild=ctx.guild, size=128))
+
+        for i, arg in enumerate(sorted(self.bot.args.items())):
+            embeds[i // 10].add_field(name=arg[0], value=return_or_truncate(arg[1], 350), inline=False)
+
+        session = EmbedPaginatorSession(ctx, *embeds)
+        await session.run()
+
+    @args.command(name="raw")
+    @checks.has_permissions(PermissionLevel.SUPPORTER)
+    async def args_raw(self, ctx, *, name: str.lower):
+        """
+        View the raw content of an arg.
+        """
+        if name not in self.bot.args:
+            embed = create_not_found_embed(name, self.bot.args.keys(), "Arg")
+        else:
+            val = truncate(escape_code_block(self.bot.args[name]), 2048 - 7)
+            embed = discord.Embed(
+                title=f'Raw arg - "{name}":',
+                description=f"```\n{val}```",
+                color=self.bot.main_color,
+            )
+
+        return await ctx.send(embed=embed)
+
+    @args.command(name="add", aliases=["create", "make"])
+    @checks.has_permissions(PermissionLevel.SUPPORTER)
+    async def args_add(self, ctx, name: str.lower, *, value: commands.clean_content):
+        """
+        Add an arg.
+
+        Simply to add an arg, do: ```
+        {prefix}args add name value
+        ```
+        """
+        if name in self.bot.args:
+            embed = discord.Embed(
+                title="Error",
+                color=self.bot.error_color,
+                description=f"Arg `{name}` already exists.",
+            )
+            return await ctx.send(embed=embed)
+
+        if name in RESERVED_ARG_NAMES:
+            embed = discord.Embed(
+                title="Error",
+                color=self.bot.error_color,
+                description=f"Arg name `{name}` is reserved (used by formatreply commands). "
+                f"Reserved names: {', '.join(f'`{n}`' for n in sorted(RESERVED_ARG_NAMES))}.",
+            )
+            return await ctx.send(embed=embed)
+
+        if len(name) > 120:
+            embed = discord.Embed(
+                title="Error",
+                color=self.bot.error_color,
+                description="Arg names cannot be longer than 120 characters.",
+            )
+            return await ctx.send(embed=embed)
+
+        self.bot.args[name] = value
+        await self.bot.config.update()
+
+        embed = discord.Embed(
+            title="Added arg",
+            color=self.bot.main_color,
+            description="Successfully created arg.",
+        )
+        return await ctx.send(embed=embed)
+
+    @args.command(name="remove", aliases=["del", "delete"])
+    @checks.has_permissions(PermissionLevel.SUPPORTER)
+    async def args_remove(self, ctx, *, name: str.lower):
+        """Remove an arg."""
+        if name in self.bot.args:
+            self.bot.args.pop(name)
+            await self.bot.config.update()
+            embed = discord.Embed(
+                title="Removed arg",
+                color=self.bot.main_color,
+                description=f"Arg `{name}` is now deleted.",
+            )
+        else:
+            embed = create_not_found_embed(name, self.bot.args.keys(), "Arg")
+        await ctx.send(embed=embed)
+
+    @args.command(name="edit")
+    @checks.has_permissions(PermissionLevel.SUPPORTER)
+    async def args_edit(self, ctx, name: str.lower, *, value):
+        """
+        Edit an arg.
+        """
+        if name in self.bot.args:
+            self.bot.args[name] = value
+            await self.bot.config.update()
+
+            embed = discord.Embed(
+                title="Edited arg",
+                color=self.bot.main_color,
+                description=f'`{name}` will now be replaced with "{value}".',
+            )
+        else:
+            embed = create_not_found_embed(name, self.bot.args.keys(), "Arg")
+        await ctx.send(embed=embed)
+
+    @args.command(name="rename")
+    @checks.has_permissions(PermissionLevel.SUPPORTER)
+    async def args_rename(self, ctx, name: str.lower, *, value):
+        """
+        Rename an arg.
+        """
+        if name not in self.bot.args:
+            embed = create_not_found_embed(name, self.bot.args.keys(), "Arg")
+            return await ctx.send(embed=embed)
+
+        if value in self.bot.args:
+            embed = discord.Embed(
+                title="Error",
+                color=self.bot.error_color,
+                description=f"Arg `{value}` already exists.",
+            )
+            return await ctx.send(embed=embed)
+
+        if value in RESERVED_ARG_NAMES:
+            embed = discord.Embed(
+                title="Error",
+                color=self.bot.error_color,
+                description=f"Arg name `{value}` is reserved (used by formatreply commands). "
+                f"Reserved names: {', '.join(f'`{n}`' for n in sorted(RESERVED_ARG_NAMES))}.",
+            )
+            return await ctx.send(embed=embed)
+
+        if len(value) > 120:
+            embed = discord.Embed(
+                title="Error",
+                color=self.bot.error_color,
+                description="Arg names cannot be longer than 120 characters.",
+            )
+            return await ctx.send(embed=embed)
+
+        old_arg_value = self.bot.args[name]
+        self.bot.args.pop(name)
+        self.bot.args[value] = old_arg_value
+        await self.bot.config.update()
+
+        embed = discord.Embed(
+            title="Renamed arg",
+            color=self.bot.main_color,
+            description=f'`{name}` has been renamed to "{value}".',
+        )
+        await ctx.send(embed=embed)
+
     @commands.command(usage="<category> [options]")
     @checks.has_permissions(PermissionLevel.MODERATOR)
     @checks.thread_only()
@@ -1510,6 +1722,19 @@ async def reply(self, ctx, *, msg: str = ""):
         automatically embedding image URLs.
         """
 
+        if self.bot.args:
+            msg = self.bot.formatter.format(msg, **self.bot.args)
+
+        if len(msg) > 4096:
+            return await ctx.send(
+                embed=discord.Embed(
+                    title="Error",
+                    color=self.bot.error_color,
+                    description="The resulting message is too long to fit in an embed description "
+                    f"({len(msg)}/4096 characters). Please shorten your message or args.",
+                )
+            )
+
         # Ensure logs record only the reply text, not the command.
         ctx.message.content = msg
         async with safe_typing(ctx):
@@ -1532,10 +1757,22 @@ async def freply(self, ctx, *, msg: str = ""):
         """
         msg = self.bot.formatter.format(
             msg,
+            **self.bot.args,
             channel=ctx.channel,
             recipient=ctx.thread.recipient,
             author=ctx.message.author,
         )
+
+        if len(msg) > 4096:
+            return await ctx.send(
+                embed=discord.Embed(
+                    title="Error",
+                    color=self.bot.error_color,
+                    description="The resulting message is too long to fit in an embed description "
+                    f"({len(msg)}/4096 characters). Please shorten your message or args.",
+                )
+            )
+
         # Ensure logs record only the reply text, not the command.
         ctx.message.content = msg
         async with safe_typing(ctx):
@@ -1558,10 +1795,22 @@ async def fareply(self, ctx, *, msg: str = ""):
         """
         msg = self.bot.formatter.format(
             msg,
+            **self.bot.args,
             channel=ctx.channel,
             recipient=ctx.thread.recipient,
             author=ctx.message.author,
         )
+
+        if len(msg) > 4096:
+            return await ctx.send(
+                embed=discord.Embed(
+                    title="Error",
+                    color=self.bot.error_color,
+                    description="The resulting message is too long to fit in an embed description "
+                    f"({len(msg)}/4096 characters). Please shorten your message or args.",
+                )
+            )
+
         # Ensure logs record only the reply text, not the command.
         ctx.message.content = msg
         async with safe_typing(ctx):
@@ -1584,10 +1833,22 @@ async def fpreply(self, ctx, *, msg: str = ""):
         """
         msg = self.bot.formatter.format(
             msg,
+            **self.bot.args,
             channel=ctx.channel,
             recipient=ctx.thread.recipient,
             author=ctx.message.author,
         )
+
+        if len(msg) > 4096:
+            return await ctx.send(
+                embed=discord.Embed(
+                    title="Error",
+                    color=self.bot.error_color,
+                    description="The resulting message is too long to fit in an embed description "
+                    f"({len(msg)}/4096 characters). Please shorten your message or args.",
+                )
+            )
+
         # Ensure logs record only the reply text, not the command.
         ctx.message.content = msg
         async with safe_typing(ctx):
@@ -1610,10 +1871,22 @@ async def fpareply(self, ctx, *, msg: str = ""):
         """
         msg = self.bot.formatter.format(
             msg,
+            **self.bot.args,
             channel=ctx.channel,
             recipient=ctx.thread.recipient,
             author=ctx.message.author,
         )
+
+        if len(msg) > 4096:
+            return await ctx.send(
+                embed=discord.Embed(
+                    title="Error",
+                    color=self.bot.error_color,
+                    description="The resulting message is too long to fit in an embed description "
+                    f"({len(msg)}/4096 characters). Please shorten your message or args.",
+                )
+            )
+
         # Ensure logs record only the reply text, not the command.
         ctx.message.content = msg
         async with safe_typing(ctx):
diff --git a/cogs/utility.py b/cogs/utility.py
index bc863a6f45..283823d39c 100644
--- a/cogs/utility.py
+++ b/cogs/utility.py
@@ -1048,7 +1048,7 @@ async def alias(self, ctx, *, name: str.lower = None):
 
         When `{prefix}alias` is used by itself, this will retrieve
         a list of alias that are currently set. `{prefix}alias-name` will show what the
-        alias point to.
+        alias points to.
 
         To use alias:
 
diff --git a/core/config.py b/core/config.py
index 0e45b00175..113e7f17e6 100644
--- a/core/config.py
+++ b/core/config.py
@@ -182,6 +182,7 @@ class ConfigManager:
         "override_command_level": {},
         # threads
         "snippets": {},
+        "args": {},
         "notification_squad": {},
         "subscriptions": {},
         "closures": {},