What are the best anti-spam bots for Telegram

Anti-spam bots are essential tools for protecting Telegram groups and channels from unwanted messages, scam links, and bot attacks. The best options in 2026 include Combot, Rose Bot, Group Help Bot, and Shieldy, each offering different strengths depending on your community size and moderation needs.

Why You Need an Anti-Spam Bot

Telegram's open nature makes groups vulnerable to spam attacks, especially as they grow beyond a few hundred members. Manual moderation becomes impractical when spammers use automated tools to flood groups with advertisements, phishing links, and scam messages. A well-configured anti-spam bot can handle thousands of spam attempts per day without human intervention.

Telegram introduced its own built-in Aggressive Anti-Spam feature for groups with 200+ members, but it catches only the most obvious spam. Dedicated bots provide far more granular control, custom filters, and advanced detection methods.

Top Anti-Spam Bots Ranked

1. Combot (@comaborbot)

Combot is the most comprehensive moderation solution available. It combines anti-spam with detailed analytics, making it ideal for large communities with 1,000+ members.

Key features:
- AI-powered spam detection with high accuracy
- CAS (Combot Anti-Spam) database — a shared blocklist of known spammers across 100,000+ groups
- Customizable welcome messages with CAPTCHA verification
- Detailed group analytics and member activity reports
- Automated warnings and progressive punishment system
- Multi-language support for international communities

Pricing: Free for basic features; premium plans start at around $10/month for groups over 5,000 members.

Best for: Large, active communities that need both moderation and analytics in one package.

2. Rose Bot (@MissRose_bot)

Rose (also known as Miss Rose) is one of the most popular and reliable moderation bots, trusted by tens of thousands of groups worldwide.

Key features:
- Extensive filter system with regex support
- Anti-flood protection (limits rapid message bursts)
- Blocklist and allowlist management
- Note system for storing group rules and FAQs
- Federation system — ban a user across multiple linked groups simultaneously
- Welcome messages with CAPTCHA buttons
- Warn/mute/ban escalation system

Pricing: Completely free.

Best for: Medium to large groups that want powerful moderation without any cost. Its federation feature is unmatched for admins managing multiple related groups.

3. Group Help Bot (@GroupHelpBot)

Group Help Bot offers a user-friendly interface and covers all essential anti-spam needs without overwhelming admins with options.

Key features:
- CAPTCHA verification for new members (math, button, or image-based)
- Automatic deletion of forwarded messages from channels
- Link and media filtering
- Anti-raid protection to detect mass join attacks
- Customizable rules and warnings
- Scheduled messages for recurring announcements

Pricing: Free with optional premium features.

Best for: Small to medium groups (under 2,000 members) where simplicity is valued.

4. Shieldy (@shaborbot)

Shieldy focuses on one thing and does it well — CAPTCHA verification for new members to block bot accounts.

Key features:
- Multiple CAPTCHA types: button press, equation solving, custom questions
- Configurable timeout (kick members who don't solve CAPTCHA in time)
- Automatic deletion of join/leave messages
- Minimal setup required — works out of the box
- Open-source codebase for transparency

Pricing: Free and open-source.

Best for: Groups that primarily need new-member verification without complex moderation features.

5. Protectron (@protectronbot)

Protectron is built specifically for high-traffic groups facing constant spam attacks.

Key features:
- Real-time message scanning for spam patterns
- Phone number and username-based filters
- Auto-ban for users sharing known scam links
- Configurable sensitivity levels
- Detailed moderation logs

Pricing: Free for basic use.

Best for: Crypto, trading, and tech communities that attract high volumes of targeted spam.

How to Set Up an Anti-Spam Bot

Step 1: Add the Bot to Your Group

Search for the bot by its username (e.g., @MissRose_bot) in Telegram, open the bot profile, and tap Add to Group. Select your group from the list.

Step 2: Grant Admin Permissions

The bot needs admin rights to function. Go to Group Settings → Administrators → select the bot → enable these permissions:
- Delete Messages — required for removing spam
- Ban Users — required for blocking spammers
- Pin Messages — optional, for welcome messages
- Invite Users via Link — optional, depending on bot features

Step 3: Configure Basic Settings

Most bots respond to commands in the group chat. Common setup commands:

  • /antispam on — enable spam detection
  • /setwelcome — configure the welcome message
  • /captcha on — enable CAPTCHA for new members
  • /setflood 10 — set the flood limit (messages per time window)
  • /filters — view and manage custom word filters

Step 4: Test the Configuration

Create a secondary Telegram account or ask a friend to join the group. Verify that the CAPTCHA appears, that filtered words are caught, and that the bot responds as expected.

Combining Bots for Maximum Protection

Many experienced admins run two bots simultaneously — one for CAPTCHA verification and another for content filtering. A common combination:

  • Shieldy for new-member CAPTCHA verification
  • Rose Bot for message filtering, warnings, and ban management

This layered approach blocks automated bots at entry while catching spam that slips through from compromised legitimate accounts.

Telegram's Built-In Anti-Spam

Since 2022, Telegram offers a native Aggressive Anti-Spam mode for groups with 200+ members. To enable it:

  1. Open Group Settings
  2. Go to Administrators
  3. Find Aggressive Anti-Spam
  4. Toggle it on

This feature uses Telegram's own AI to detect and auto-delete spam. It works alongside third-party bots, so there is no reason not to enable it. However, it has limited customization — you cannot adjust sensitivity or add custom filters — which is why dedicated bots remain necessary.

Tips & Best Practices

  • Start with CAPTCHA: Enabling CAPTCHA verification alone eliminates 80-90% of automated spam in most groups. It is the single highest-impact action you can take.
  • Use progressive punishment: Configure your bot to warn first, then mute, then ban. This reduces false positives and gives legitimate members a chance to correct mistakes.
  • Review moderation logs weekly: Most bots provide logs of deleted messages and banned users. Check these to fine-tune your filters and catch false positives.
  • Restrict new members for the first 24 hours: Many bots allow you to limit new members' ability to send links, media, or forwarded messages until they have been in the group for a set period.
  • Keep your bot updated: Spam techniques evolve. Bots like Combot with cloud-based detection adapt automatically, while self-hosted solutions need manual updates.
  • Combine with channel web presence: If you also publish your channel content on platforms like tgchannel.space, having clean, spam-free discussions improves your community's reputation and discoverability.

Common Mistakes

Mistake 1: Giving the bot all admin permissions
Why it's wrong: Bots should follow the principle of least privilege. Giving unnecessary permissions like Add Admins or Change Group Info creates security risks if the bot is compromised.
How to avoid: Only enable Delete Messages and Ban Users — the two permissions essential for anti-spam.

Mistake 2: Setting filters too aggressively
Why it's wrong: Overly strict word filters delete legitimate messages, frustrating real members. Banning common words or short strings leads to high false-positive rates.
How to avoid: Start with obvious spam keywords and expand gradually. Monitor the bot's deletion log for false positives before tightening filters.

Mistake 3: Not configuring a CAPTCHA timeout
Why it's wrong: Without a timeout, unverified users remain in the group indefinitely, cluttering the member list with inactive bot accounts.
How to avoid: Set a 5-minute timeout. Users who don't solve the CAPTCHA within that window are automatically kicked and can rejoin to try again.

Mistake 4: Running too many bots at once
Why it's wrong: Three or four moderation bots can conflict with each other — multiple bots responding to the same spam message, issuing duplicate warnings, or contradicting each other's actions.
How to avoid: Use a maximum of two complementary bots with clearly separated responsibilities.

Mistake 5: Ignoring the CAS database
Why it's wrong: The Combot Anti-Spam (CAS) database contains hundreds of thousands of verified spammer accounts. Not using it means your bot only reacts to spam after it happens.
How to avoid: Enable CAS integration if your bot supports it (Rose Bot and Combot both do). This preemptively blocks known spammers on join.

Frequently Asked Questions

Do anti-spam bots work in Telegram channels?
Anti-spam bots primarily work in groups, not channels. Channels have comments sections (which are technically linked groups), and bots can moderate those. For the channel itself, only admins can post, so spam is not typically an issue.

Can a spam bot accidentally ban real users?
Yes, false positives can happen, especially with aggressive word filters. Use progressive punishment (warn → mute → ban) and review logs regularly to catch and reverse accidental actions.

Are anti-spam bots free?
Most are free for basic use. Rose Bot and Shieldy are entirely free. Combot and Group Help Bot offer premium tiers with advanced features for large groups, but their free versions are sufficient for communities under 5,000 members.

Can I build my own anti-spam bot?
Yes, using the Telegram Bot API and libraries like python-telegram-bot or telegram-bot-ruby. However, maintaining spam detection logic requires ongoing effort. For most admins, using an established bot is far more practical.

How do I report false positives to the bot?
Most bots have a /report command or an admin panel where you can unban users and whitelist messages. In Rose Bot, use /unban @username and add the flagged term to your allowlist with /addallow.