Best Anti-Spam Bots for Telegram Groups (2026)

Managing a large Telegram group without anti-spam tools is a losing battle. Spam accounts, crypto scam promotions, unsolicited advertisements, bot floods, and ban evasion are constant threats in any group with more than a few hundred members. The right anti-spam bot handles the filtering automatically, enforcing rules 24/7 without manual admin involvement. This guide covers the best anti-spam bots for Telegram groups in 2026, how they work, and how to configure effective CAPTCHA protection for new members. Find more group management tools in the Group Management category and the Telegram Group Management Bots collection.

Best Anti-Spam Bots for Telegram Groups

1. @shieldy_bot — Lightweight CAPTCHA Protection

@shieldy_bot is one of the most popular anti-spam bots for Telegram, valued for being simple to configure while effective against the most common spam attack: bot floods and newly created accounts. Its core mechanism is a join CAPTCHA — every new member must pass a quick challenge before they can post.

How @shieldy_bot works:

A new user joins the group.
@shieldy_bot immediately restricts them — they cannot send messages.
The bot posts a CAPTCHA challenge (math question, button click, or image selection).
If the new member solves the CAPTCHA within the time limit (configurable, default 60 seconds), restrictions are lifted.
If they fail or ignore the challenge, @shieldy_bot kicks and optionally bans them.

CAPTCHA types available:

Button CAPTCHA: New member must tap a "I'm not a robot" button. Minimal friction for humans, effective against basic bots.
Math CAPTCHA: Solve a simple arithmetic problem. Harder for bots to pass automatically.
Image CAPTCHA: Select the correct image from a grid. The hardest for automated accounts to bypass.
Digits CAPTCHA: Type a specific number displayed in the challenge message.

Additional features:

Auto-delete join/leave service messages (reduces noise in active groups)
Restrict new members from sending media for a configurable period (e.g. 24 hours after joining)
Language restriction: require new members to respond in a specific language
Strike system: users get a configurable number of CAPTCHA attempts before being removed
Whitelist by-referral: users invited by existing trusted members skip the CAPTCHA

2. @combot — Full-Featured Group Management with Anti-Spam

@combot is the most comprehensive group management bot on Telegram, and its anti-spam capabilities are among its strongest features. Unlike @shieldy_bot, which focuses almost entirely on join protection, @combot provides ongoing message-level spam detection throughout the group's life.

Anti-spam features in @combot:

Message flood protection: Users who send more than N messages within a short period are automatically muted or kicked.
Link filtering: Block all external links, or whitelist specific domains, with automatic deletion of non-whitelisted URLs.
Forward filtering: Block forwarded messages from channels or users outside the group.
Arabic/Chinese text filter: Many spam campaigns use non-Latin scripts. Combot can restrict messages in specific character sets.
Sticker and GIF limits: Prevent sticker/GIF spam by limiting how many can be sent per user per hour.
Username filter: Block messages from users with no username (common in spam bot setups).
Warn system: Accumulate warns on users who violate rules; auto-kick or ban at a configurable warn threshold.

@combot also provides a web dashboard at combot.org where admins can see detailed group analytics, spam event logs, and configure all settings via a graphical interface rather than bot commands.

3. @SpamProtectionBot — Telegram's Own Anti-Spam Service

@SpamProtectionBot is Telegram's official bot for leveraging the platform's built-in spam database. When added to a group as admin, it automatically bans users who are in Telegram's global spam blacklist — accounts that have been confirmed as spam by multiple reports across many groups.

This is passive protection: no configuration required, no CAPTCHA friction for new members. It simply blocks accounts that are already known to be spam. The limitation is that it only catches accounts already on the blacklist — newly created spam accounts not yet reported are not blocked.

Best practice: use @SpamProtectionBot alongside @shieldy_bot or @combot. @SpamProtectionBot blocks known bad actors passively; @shieldy_bot catches new spam accounts via CAPTCHA verification.

4. @GroupHelpBot — Rules Enforcement and Anti-Spam Combined

@GroupHelpBot combines anti-spam filtering with a rules posting and enforcement system. New members automatically receive the group rules via private message and must acknowledge them before posting. Rules violations (tracked by keyword triggers, link detection, or admin manual warns) accumulate under a point system.

Its keyword filtering is particularly strong: admins define a list of banned words, phrases, and regex patterns. Messages matching these patterns are automatically deleted and the sender warned. This handles spam that evades join CAPTCHA — for example, legitimate-looking users who join cleanly but later post spam or promotional content.

5. @Rose — Advanced Ban and Warn Management

@Rose (sometimes referred to as @MissRose) is a full-featured group management bot with sophisticated ban and warn handling. Its anti-spam relevance lies in its ban list federation feature: groups managed by the same admin network can share ban lists. A user banned from one group for spam is automatically banned from all linked groups.

This federation model is highly effective for multi-group operations — community owners who run multiple related groups (regional chapters, topic-specific subgroups, etc.) can ensure spam actors banned in one venue are blocked across the entire network.

How Anti-Spam Bots Work

Understanding the mechanisms helps you choose the right bot and configure it effectively:

Join-Time Protection

The most common spam vector is joining and immediately posting. Join-time protection (CAPTCHA bots like @shieldy_bot) addresses this by restricting new members until they prove they are human. This stops automated join-and-spam attacks but has no effect on human spammers who pass the CAPTCHA.

Content Filtering

Message-level filtering analyzes the content of every message and deletes those matching spam patterns. This catches human spammers who pass the join CAPTCHA but then post advertisements, phishing links, or other unwanted content. @combot and @GroupHelpBot both offer robust content filtering.

Behavior-Based Detection

Flood detection watches how quickly a user sends messages. Legitimate humans rarely send 10 messages in 30 seconds; bots and determined spammers often do. Behavior-based detection mutes or bans high-frequency senders regardless of message content.

Global Blacklist Checking

Cross-referencing new members against known spam databases (like Telegram's official blacklist accessed via @SpamProtectionBot) is the most passive and frictionless approach. It requires no interaction from legitimate users but only catches previously identified spam accounts.

Setting Up CAPTCHA for New Members

CAPTCHA for new Telegram group members is the single most effective measure against bot flood attacks. Here is a step-by-step setup using @shieldy_bot:

Add @shieldy_bot to your group and grant it admin permissions: Delete messages, Ban users, Restrict users.
Send /settings in the group. @shieldy_bot responds with an interactive settings menu.
Enable CAPTCHA. Toggle "CAPTCHA" to ON.
Select CAPTCHA type. For most groups: Button CAPTCHA (low friction, effective against basic bots). For high-risk groups: Math or Image CAPTCHA.
Set the timeout. 60–120 seconds is standard. Very short timeouts (under 30 seconds) cause false positives for users who join on slow connections.
Enable "Delete join messages" to reduce the noise of CAPTCHA challenge messages for members who are not going through the process themselves.
Set "Restrict new members media" to a duration (e.g. 24 hours) to prevent newly joined accounts from posting links or media immediately after passing CAPTCHA.
Test the setup by joining the group with a secondary account and verifying the CAPTCHA challenge appears and functions correctly.

FAQ

Will anti-spam bots affect legitimate new members?

CAPTCHA bots add a brief step for legitimate new members (a button tap or simple math problem). This is minimal friction for humans. The trade-off is essentially zero — one extra tap versus stopping thousands of spam accounts. Most users are accustomed to CAPTCHA verification and do not find it intrusive.

Can spammers bypass anti-spam bots?

Determined human spammers can pass CAPTCHA challenges. No automated filter stops a human operator manually spamming a group. Anti-spam bots stop automated attacks effectively; for persistent human spammers, manual admin action (ban + reporting to Telegram) is required. Content filtering and keyword rules help catch human spammers after they join.

Do anti-spam bots need admin rights?

Yes. All anti-spam bots require admin permissions to delete messages and ban/restrict users. Without these permissions they can only detect spam but cannot act on it. Grant only the permissions the bot specifically requires — Delete messages, Ban users, Restrict users are typically sufficient.

Can I use multiple anti-spam bots at the same time?

Yes, and it is recommended. Use @SpamProtectionBot for passive blacklist-based protection alongside @shieldy_bot for join CAPTCHA and @combot for ongoing content filtering. Each layer addresses a different attack vector. Ensure no two bots have conflicting rules (e.g. both trying to manage the same warns counter).

What should I do if @shieldy_bot is accidentally banning real users?

Lower the CAPTCHA difficulty or switch from Image CAPTCHA to Button CAPTCHA. Also check the timeout — if legitimate users are being kicked, 60 seconds may be too short for your audience. The whitelist feature (users invited by existing trusted members skip CAPTCHA) helps if specific communities of legitimate users are affected.