diff --git a/backend/src/plugins/AutoReactions/AutoReactionsPlugin.ts b/backend/src/plugins/AutoReactions/AutoReactionsPlugin.ts
new file mode 100644
index 00000000..38116ed3
--- /dev/null
+++ b/backend/src/plugins/AutoReactions/AutoReactionsPlugin.ts
@@ -0,0 +1,45 @@
+import { zeppelinPlugin } from "../ZeppelinPluginBlueprint";
+import { ConfigSchema, AutoReactionsPluginType } from "./types";
+import { PluginOptions } from "knub";
+import { NewAutoReactionsCmd } from "./commands/NewAutoReactionsCmd";
+import { DisableAutoReactionsCmd } from "./commands/DisableAutoReactionsCmd";
+import { MessageCreateEvt } from "./events/MessageCreateEvt";
+import { GuildSavedMessages } from "src/data/GuildSavedMessages";
+import { GuildAutoReactions } from "src/data/GuildAutoReactions";
+
+const defaultOptions: PluginOptions<AutoReactionsPluginType> = {
+  config: {
+    can_manage: false,
+  },
+  overrides: [
+    {
+      level: ">=100",
+      config: {
+        can_manage: true,
+      },
+    },
+  ],
+};
+
+export const AutoReactionsPlugin = zeppelinPlugin<AutoReactionsPluginType>()("auto_reactions", {
+  configSchema: ConfigSchema,
+  defaultOptions,
+
+  // prettier-ignore
+  commands: [
+    NewAutoReactionsCmd,
+    DisableAutoReactionsCmd,
+  ],
+
+  // prettier-ignore
+  events: [
+    MessageCreateEvt,
+  ],
+
+  onLoad(pluginData) {
+    const { state, guild } = pluginData;
+
+    state.savedMessages = GuildSavedMessages.getGuildInstance(guild.id);
+    state.autoReactions = GuildAutoReactions.getGuildInstance(guild.id);
+  },
+});
diff --git a/backend/src/plugins/AutoReactions/commands/DisableAutoReactionsCmd.ts b/backend/src/plugins/AutoReactions/commands/DisableAutoReactionsCmd.ts
new file mode 100644
index 00000000..1d95e9ba
--- /dev/null
+++ b/backend/src/plugins/AutoReactions/commands/DisableAutoReactionsCmd.ts
@@ -0,0 +1,24 @@
+import { autoReactionsCmd } from "../types";
+import { commandTypeHelpers as ct } from "../../../commandTypes";
+import { sendErrorMessage, sendSuccessMessage } from "src/pluginUtils";
+
+export const DisableAutoReactionsCmd = autoReactionsCmd({
+  trigger: "auto_reactions disable",
+  permission: "can_manage",
+  usage: "!auto_reactions disable 629990160477585428",
+
+  signature: {
+    channelId: ct.channelId(),
+  },
+
+  async run({ message: msg, args, pluginData }) {
+    const autoReaction = await pluginData.state.autoReactions.getForChannel(args.channelId);
+    if (!autoReaction) {
+      sendErrorMessage(pluginData, msg.channel, `Auto-reactions aren't enabled in <#${args.channelId}>`);
+      return;
+    }
+
+    await pluginData.state.autoReactions.removeFromChannel(args.channelId);
+    sendSuccessMessage(pluginData, msg.channel, `Auto-reactions disabled in <#${args.channelId}>`);
+  },
+});
diff --git a/backend/src/plugins/AutoReactions/commands/NewAutoReactionsCmd.ts b/backend/src/plugins/AutoReactions/commands/NewAutoReactionsCmd.ts
new file mode 100644
index 00000000..d649a205
--- /dev/null
+++ b/backend/src/plugins/AutoReactions/commands/NewAutoReactionsCmd.ts
@@ -0,0 +1,47 @@
+import { autoReactionsCmd } from "../types";
+import { commandTypeHelpers as ct } from "../../../commandTypes";
+import { isEmoji, customEmojiRegex, canUseEmoji } from "src/utils";
+import { sendErrorMessage, sendSuccessMessage } from "src/pluginUtils";
+
+export const NewAutoReactionsCmd = autoReactionsCmd({
+  trigger: "auto_reactions",
+  permission: "can_manage",
+  usage: "!auto_reactions 629990160477585428 👍 👎",
+
+  signature: {
+    channelId: ct.channelId(),
+    reactions: ct.string({ rest: true }),
+  },
+
+  async run({ message: msg, args, pluginData }) {
+    const finalReactions = [];
+
+    for (const reaction of args.reactions) {
+      if (!isEmoji(reaction)) {
+        sendErrorMessage(pluginData, msg.channel, "One or more of the specified reactions were invalid!");
+        return;
+      }
+
+      let savedValue;
+
+      const customEmojiMatch = reaction.match(customEmojiRegex);
+      if (customEmojiMatch) {
+        // Custom emoji
+        if (!canUseEmoji(pluginData.client, customEmojiMatch[2])) {
+          sendErrorMessage(pluginData, msg.channel, "I can only use regular emojis and custom emojis from this server");
+          return;
+        }
+
+        savedValue = `${customEmojiMatch[1]}:${customEmojiMatch[2]}`;
+      } else {
+        // Unicode emoji
+        savedValue = reaction;
+      }
+
+      finalReactions.push(savedValue);
+    }
+
+    await pluginData.state.autoReactions.set(args.channelId, finalReactions);
+    sendSuccessMessage(pluginData, msg.channel, `Auto-reactions set for <#${args.channelId}>`);
+  },
+});
diff --git a/backend/src/plugins/AutoReactions/events/MessageCreateEvt.ts b/backend/src/plugins/AutoReactions/events/MessageCreateEvt.ts
new file mode 100644
index 00000000..ff1bb756
--- /dev/null
+++ b/backend/src/plugins/AutoReactions/events/MessageCreateEvt.ts
@@ -0,0 +1,43 @@
+import { autoReactionsEvt } from "../types";
+import { isDiscordRESTError } from "src/utils";
+import { logger } from "knub";
+import { LogType } from "src/data/LogType";
+
+export const MessageCreateEvt = autoReactionsEvt({
+  event: "messageCreate",
+  allowOutsideOfGuild: false,
+
+  async listener(meta) {
+    const pluginData = meta.pluginData;
+    const msg = meta.args.message;
+
+    const autoReaction = await pluginData.state.autoReactions.getForChannel(msg.channel.id);
+    if (!autoReaction) return;
+
+    for (const reaction of autoReaction.reactions) {
+      try {
+        await msg.addReaction(reaction);
+      } catch (e) {
+        if (isDiscordRESTError(e)) {
+          logger.warn(
+            `Could not apply auto-reaction to ${msg.channel.id}/${msg.id} in guild ${pluginData.guild.name} (${pluginData.guild.id}) (error code ${e.code})`,
+          );
+
+          if (e.code === 10008) {
+            pluginData.state.logs.log(LogType.BOT_ALERT, {
+              body: `Could not apply auto-reactions in <#${msg.channel.id}> for message \`${msg.id}\`. Make sure nothing is deleting the message before the reactions are applied.`,
+            });
+          } else {
+            pluginData.state.logs.log(LogType.BOT_ALERT, {
+              body: `Could not apply auto-reactions in <#${msg.channel.id}> for message \`${msg.id}\`. Error code ${e.code}.`,
+            });
+          }
+
+          return;
+        } else {
+          throw e;
+        }
+      }
+    }
+  },
+});
diff --git a/backend/src/plugins/AutoReactions/types.ts b/backend/src/plugins/AutoReactions/types.ts
new file mode 100644
index 00000000..0f50993e
--- /dev/null
+++ b/backend/src/plugins/AutoReactions/types.ts
@@ -0,0 +1,22 @@
+import * as t from "io-ts";
+import { BasePluginType, command, eventListener } from "knub";
+import { GuildLogs } from "src/data/GuildLogs";
+import { GuildSavedMessages } from "src/data/GuildSavedMessages";
+import { GuildAutoReactions } from "src/data/GuildAutoReactions";
+
+export const ConfigSchema = t.type({
+  can_manage: t.boolean,
+});
+export type TConfigSchema = t.TypeOf<typeof ConfigSchema>;
+
+export interface AutoReactionsPluginType extends BasePluginType {
+  config: TConfigSchema;
+  state: {
+    logs: GuildLogs;
+    savedMessages: GuildSavedMessages;
+    autoReactions: GuildAutoReactions;
+  };
+}
+
+export const autoReactionsCmd = command<AutoReactionsPluginType>();
+export const autoReactionsEvt = eventListener<AutoReactionsPluginType>();
diff --git a/backend/src/plugins/availablePlugins.ts b/backend/src/plugins/availablePlugins.ts
index 14376e34..14794d80 100644
--- a/backend/src/plugins/availablePlugins.ts
+++ b/backend/src/plugins/availablePlugins.ts
@@ -1,12 +1,14 @@
 import { UtilityPlugin } from "./Utility/UtilityPlugin";
 import { LocateUserPlugin } from "./LocateUser/LocateUserPlugin";
 import { ZeppelinPluginBlueprint } from "./ZeppelinPluginBlueprint";
+import { AutoReactionsPlugin } from "./AutoReactions/AutoReactionsPlugin";
 import { RemindersPlugin } from "./Reminders/RemindersPlugin";
 import { UsernameSaverPlugin } from "./UsernameSaver/UsernameSaverPlugin";
 import { WelcomeMessagePlugin } from "./WelcomeMessage/WelcomeMessagePlugin";
 
 // prettier-ignore
 export const guildPlugins: Array<ZeppelinPluginBlueprint<any>> = [
+  AutoReactionsPlugin,
   LocateUserPlugin,
   RemindersPlugin,
   UsernameSaverPlugin,