YouTube Comments for Brands: What the Spam Policy Allows

As of 2026-10-16, YouTube lets a brand comment on videos, reply to viewers and even include links. What it does not allow is comments that are high-volume, repetitive or deceptive, comments that fake engagement, and comments that pretend to come from someone else. The rules live mainly in YouTube's Spam Policy, with the fake engagement, external links and impersonation policies filling in the details. Comments are named explicitly. The Spam Policy applies to:

“all types of content on YouTube, including unlisted and private content, comments, links, posts and thumbnails”

What the Spam Policy says about comments

Near the top, the policy has a sentence that sums up the brand risk:

“We also prohibit misleading viewers to boost content engagement or to flood community spaces with inorganic promotion.”

Its definition of comment spam is specific about what crosses the line:

“Using high-volume, repetitive, or deceptive comments, live chats, or other messages to drive traffic to or engagement with content.”

YouTube's own example is posting identical or similar "check out my channel" messages across hundreds of videos. Promotion as such is not the problem. The same page says YouTube recognises that creators use a variety of strategies to promote their channels and reach new audiences. The problem is volume, repetition and deception.

Two other items on the page matter if you use software. "Automated or synthetic mass-production" covers using automated tools or AI to churn out high volumes of similar content with minimal changes. And the policy reaches "coordinated networks of channels". A template rewritten by an AI tool into hundreds of near-identical replies sits close to both descriptions.

The YouTube Terms of Service add a broader line: you may not use the service "to distribute unsolicited promotional or commercial content or other unwanted or mass solicitations".

Links in comments

Links in comments are not banned. The External links policy bans links to content that breaks the Community Guidelines, such as malware, phishing or pornography, and it applies to comments and pinned comments. It also counts obfuscated links, such as writing "dot com" instead of ".com", so spelling a URL out does not get around it. On affiliate links the page says:

“Affiliate content doesn't violate YouTube’s Terms of Use. Excessively posting affiliate content in dedicated accounts may violate our policies around spam.”

The Spam Policy also lists "off-platform diversion": content created solely to drive users off YouTube to external sites. A comment whose only job is to push a link is the pattern to avoid. The links page adds that if YouTube can't verify that a link you post is safe, it may remove the link.

Channel owners have their own filter. According to YouTube's comment settings page, a channel can hold comments that contain URLs for review, and the Basic moderation setting holds comments "that may be spam, self-promotion, gibberish, or potentially inappropriate". Held comments are not public unless the owner approves them. So a link you drop under someone else's video may simply never appear.

Engagement, incentives and who does the work

The Fake engagement policy covers comments as a metric:

“YouTube doesn’t allow anything that artificially increases the number of views, likes, comments, or other metrics either by using automatic systems or serving up videos to unsuspecting viewers.”

Asking is fine. The Spam Policy says "It's okay to ask viewers to like, comment, or subscribe." Paying for it is not: the policy names offering rewards in exchange for likes, views or subscribers, and coordinated "sub-for-sub" schemes. The Terms of Service separately forbid paying people or giving them incentives to increase views, likes or subscribers.

Outsourcing does not move the responsibility. The fake engagement page warns:

“If you hire someone to promote your channel, their decisions may impact your channel.”

If comments are posted through software that uses the YouTube API, the YouTube API Services Developer Policies apply too. They say you must not "automate or trigger views, uploads, comments, likes, dislikes, or other actions without the user's prior specific and express consent". They also list deceiving, misleading or spamming anyone among the things an API client must not do.

Comment as yourself and say who you are

The Impersonation policy lists, among content that is not allowed:

“Posting comments that make people falsely think you are another person or entity.”

That rules out the classic shortcut of a second account posing as a happy customer. Comment from the brand's channel, or from a staff member's own account that says plainly where they work.

If your audience includes the US, the FTC's Endorsement Guides point the same way. Under 16 CFR 255.5, a connection between an endorser and the seller that the audience does not expect "must be disclosed clearly and conspicuously", and material connections "can include a business, family, or personal relationship". The FTC's Endorsement Guides FAQ tells employees who mention their company's products to disclose the relationship, and adds: "Listing your employer on your profile page isn’t enough." In a comment, that means a short "I work at Acme" in the comment itself.

What a brand can legitimately do

Put together, the primary sources leave plenty of room for honest participation:

• Comment from the brand's own channel, or from a named staff account that discloses the connection in the comment.
• Reply to viewers on your own videos. The owner controls holding, approving and removing comments there.
• On other people's videos, answer the specific question in front of you. Mention your product only when it actually answers it, and say you work there.
• Write each comment for the video it sits under. Do not paste the same text across many videos.
• Add a link only when it is the answer, point it at a safe page, and expect the channel owner may hold it for review.
• Ask your own viewers to like, comment or subscribe. YouTube says this is fine; offering rewards for it is not.
• If an agency or a tool comments for you, check how it works. Violations by someone you hired can still land on your channel.

What happens when a comment breaks the rules

Under the Spam Policy, for some violations YouTube may remove the content and issue a warning or a strike, and it may suspend monetization or terminate the channel or account. The strike basics page describes the usual sequence:

1. The first violation is typically a warning. An optional policy training lets it expire after 90 days.
2. A first strike blocks uploads, live streams, posts and some other actions for 1 week, and stays on the channel for 90 days.
3. A second strike within the same 90 days means no posting for 2 weeks.
4. 3 strikes in the same 90-day period may get the channel permanently removed.

A single case of severe abuse can lead to termination without warning, and deleting the content does not remove a strike.

What this does not cover: YouTube ads, sponsored videos and local law outside the FTC rules quoted above. Policies change, so check the linked pages before you act. This is not legal advice.

Agent Agency is software that learns your product from a link and runs AI agents that promote it in online communities.