How do I stop bots from joining my Telegram group?

The most effective way to stop bots from joining your Telegram group is to use a knowledge gate instead of sharing a static invite link. A knowledge gate requires anyone who wants to join to answer a question from your content first. Bots cannot watch your videos or read your posts, so they cannot answer correctly. Verifan automates this — creators set one question, and every correct answer generates a unique, single-use Telegram invite link automatically via the Telegram Bot API.

What is a single-use Telegram invite link?

A single-use Telegram invite link is a link that can only be used to join a Telegram group once. After one person clicks it and joins, the link expires permanently. This prevents link sharing — even if someone forwards the invite to a friend, the link is already dead. Verifan generates a new single-use invite link for every fan who passes the knowledge gate, using the Telegram Bot API createChatInviteLink method with member_limit set to 1.

What is a knowledge gate for Telegram?

A knowledge gate is a checkpoint between your bio link and your private Telegram group. Instead of sharing the group invite link directly, you share a gate link. Anyone who clicks it must answer a question correctly before receiving an invite. For content creators, the question is something from their actual content — a detail from a video, post, or story. Real fans know the answer. Bots do not. Verifan provides knowledge gates with automatic single-use invite generation.

Why do bots keep joining my Telegram group?

Bots join Telegram groups by scraping static invite links from public sources — Instagram bios, TikTok profiles, Twitter posts, and websites. Once a bot finds an active invite link, it joins automatically without any human interaction. Rotating the link manually only provides temporary protection as bots find new links quickly. The permanent fix is to never expose a static invite link publicly — instead use a knowledge gate that generates a unique, single-use invite only after a human correctly answers a content question.

Is Verifan free to use?

Yes. Verifan has a free tier that includes one knowledge gate, 50 fan attempts per month, and single-use Telegram invite generation. No credit card is required. The free tier includes a Powered by Verifan watermark on the gate page. Creator Pro at $12 per month removes the watermark, allows unlimited gates, 10000 attempts per month, and fan email capture.

How do I filter fake accounts from my Telegram group?

Telegram has built-in spam filters, but they work after bots have already joined. The better approach is to prevent bots from ever receiving an invite in the first place. Use a knowledge gate that requires a correct answer before issuing an invite. Bots cannot answer questions about your content, so they never get the invite.

What is the difference between reactive and preventive filtering?

Reactive filtering (like Telegram's built-in filters) detects and removes bots after they've joined. This is inefficient and leaves spam in your chat temporarily. Preventive filtering (like knowledge gates) stops bots at the entry point — they never receive an invite and never join at all.

How to Filter Fake Accounts From Your Telegram Group — Verifan

To filter fake accounts from your Telegram group, replace your public static invite link with a knowledge gate. A knowledge gate requires each visitor to answer a question from your content before receiving a unique, single-use invite. Bots and fake accounts cannot answer content questions, so they never receive an invite.

Telegram's Built-In Filters Aren't Enough

Telegram has spam filters that admins can enable, but they work retroactively — after the bot has already joined and sent messages. According to Telegram's own documentation, these filters detect spam based on message content and frequency, but by then the damage is done: your group has been polluted, other members see the spam, and you have to spend time cleaning up.

Moreover, advanced bots are designed to evade automated detection. They use legitimate-looking usernames, post content that passes initial filters, or use sophisticated techniques to avoid being flagged. Reactive filtering is a constant arms race between Telegram's filters and bot developers — one that bot developers are winning.

The Better Approach: Preventive Filtering

Instead of trying to detect and remove bots after they join, prevent them from ever receiving an invite. This is called preventive filtering, and it's far more effective.

The mechanism is simple: instead of sharing a static invite link publicly, use a knowledge gate. A knowledge gate requires anyone who wants to join to answer a question from your content first. Bots cannot watch your videos, read your posts, or study your content — so they cannot answer correctly. Only real humans who are actually familiar with your work will know the answer.

The result: bots never get an invite. They never join. Your group stays clean from the start.

How to Set Up a Knowledge Gate in 5 Steps

Create a question based on your content — something only real fans would know (e.g., “What year did I upload my first video?”).
Set the correct answer in Verifan. The platform supports fuzzy matching, so minor spelling variations still pass.
Add @VerifanBot as an admin to your Telegram group so it can generate single-use invite links.
Replace your public static invite link with your Verifan gate URL in your Instagram bio, TikTok profile, and other social links.
Test the flow. Open your gate URL in an incognito browser, answer correctly, and confirm you receive a unique invite link. Then test with a wrong answer to confirm bots are blocked.

Why This Works

Knowledge gates work because they exploit the fundamental difference between bots and real humans: bots can't consume and understand content at human level. A bot scraper might be able to extract your post text, but it can't watch a 10-minute video and remember a detail from it. It can't read a 2,000-word article and know what year you mentioned something.

This creates an impossible barrier for bots while remaining trivial for real fans. It's the perfect filter.

Create your free gate at Verifan →