How to keep up with thousands of comments a day: 5 steps

When one post pulls in thousands of comments a day, you keep up by sorting them first, letting a keyword answer the question everyone repeats, and approving AI drafts for the rest while you answer the real questions yourself. BetterSocials is our pick for creators and small businesses who want that whole loop in one inbox, from $29 a month for four accounts. Manychat suits Instagram pages that only need keyword DMs, and Agorapulse or Sprout Social suit a newsroom with a social team.

Sorting comes before replying

Meta's own free automation, Manychat and BetterSocials all answer a comment by matching it to something you set up ahead of time. That covers the comments you predicted.

A viral post also brings questions, complaints and the odd brand inquiry, and those slip past every keyword you set.

So the order is sort, automate the repeats, draft the rest, and keep a person on the questions. A wrong automatic answer to a real question costs more trust than a slow one.

We built the steps below from each platform's published limits and each vendor's own pricing and help pages. Every competitor price here is what the vendor's page listed in October 2026, except Agorapulse's, which we read in July 2026.

What BetterSocials does when the comments pile up

BetterSocials is an AI social media manager for local businesses, creators and small agencies, and it is best for a page whose comments and DMs bring in customers. Instagram, Facebook, YouTube, TikTok, Threads and LinkedIn Company Page comments land in one Inbox, next to Instagram, Facebook and TikTok DMs.

Every new comment and DM gets a tag as it arrives: Lead, Spam, Support, Comment to DM or Archived. Spam is skipped. A new lead sends a push notification to your phone, so a buyer's question doesn't sink under the rest of the pile.

BetterSocials splits AI replies into two sections, Comments and DMs, and each has three settings. Off means you write every reply, with AI assist drafting one when you click it. Draft for me writes a reply in your voice to every new comment or DM, and nothing posts until you approve it; comment drafts go out one at a time from Needs reply or as a batch with Approve in bulk. Reply in my voice answers everyday comments under the comment 1 to 5 minutes after they land, and a DM gets an answer about a minute after it arrives.

Questions are the exception. They wait in Needs reply unless you turn on Answer questions too, which only switches on once you have written at least one AI rule, such as your prices or booking link. When your rules don't cover what someone asked, the AI doesn't guess.

Keywords carry the biggest repeat. A word like GUIDE in an Instagram or Facebook comment sends the person a DM with your link and posts a public reply under the comment. On YouTube, TikTok, Threads and LinkedIn Company Pages, the link goes in the public reply instead.

Each AI reply or draft uses 1 AI credit. Creator is $29 a month for four accounts and 1,000 AI credits, Pro is $49 a month for six accounts and 2,000, and Team is $99 a month for 12 accounts, unlimited teammates and 4,000 shared credits. Contacts and comments are unlimited on every plan. When credits run out, the AI pauses instead of charging more.

Keyword tools for meme pages and theme pages

Manychat does keyword comment-to-DM on Instagram, Messenger, WhatsApp and TikTok, and it earns its place on a page that wants multi-step sequences in a flow builder. Pro is $39 a month, billed monthly, with 2,500 active contacts. Each contact past that costs $0.05 on Pro, so a viral post raises the bill. For YouTube comments next to Instagram and Facebook, BetterSocials covers all three in one inbox.

CreatorFlow, LinkDM and InstantDM work the same comment-to-DM lane for Instagram creators. InstantDM's pricing page lists public comment replies, AI comment reply variations and Facebook Page comment-to-DM next to its Instagram automation.

Meta Business Suite includes a free comment-to-message automation for Instagram and Facebook posts. As of July 2026, its keyword automations cap at 5 case-sensitive keywords each, can wait 15 minutes before sending, and send a fixed template you write yourself.

Every one of these answers the comments you predicted.

The questions, objections and brand inquiries in the rest of the pile still need a reply. The better the post does, the bigger that unanswered remainder gets, and that remainder is where AI drafts in your voice earn their keep.

Team inboxes for news and commentary channels

Sprout Social suits a newsroom with a social team: its inbox starts on Standard at $199 per seat a month, billed annually. One person running a page would pay for seats they don't need.

Agorapulse adds AI reply suggestions, reply collision detection, comment assignment and automated moderation rules, which help a team on a busy page. It costs $79 per user a month on annual billing. Its lower tiers allow 1 moderation rule per social profile, and the top tier allows unlimited rules.

Hootsuite includes its inbox from Standard at $99 per user a month, billed annually. Its inbox does not include YouTube comments, which matters for a commentary channel that lives there.

News and commentary channels keep a person approving replies, because a wrong answer in public costs trust. BetterSocials is built the same way by default: nothing goes out that the owner has not approved or set a rule for.

Five steps for a YouTube video that went viral

A viral video's comment pile becomes an order of work in BetterSocials, not a race against a faster thumb. All five steps happen there.

1. Answer the questions first

On YouTube, every unanswered question tells the next viewer nobody is home. Open Needs reply, where BetterSocials holds questions for you, and clear those before anything else.

2. Set a keyword for the repeated ask

A YouTube keyword comment such as GUIDE gets a public reply with your link, because YouTube has no DMs. Each person gets it once per video. Other viewers see the link too, which is fine when it's the link everyone wanted.

3. Approve AI drafts in a batch

BetterSocials on Draft for me writes a reply to every new comment in your voice. Read them, fix what you want, and send the whole batch with Approve in bulk. A Spanish comment gets a Spanish draft, with no setting to change.

4. Delete the spam

BetterSocials skips spam when it drafts, and you can delete a YouTube comment from the Inbox one at a time. YouTube comments can be deleted, not hidden.

5. Switch to Reply in my voice

Once the drafts stop needing edits, switch comments to Reply in my voice. BetterSocials then answers new comments 1 to 5 minutes after they arrive. It only answers comments that arrive after you turn it on, and comments on older videos surface for you to answer by hand.

For the voice setup in more detail, see Reply to YouTube comments in your voice: 4 steps for 2026.

High-volume comment tools compared for 2026

Manychat's price is billed monthly, and Agorapulse, Sprout Social and Hootsuite list theirs on annual billing.

BetterSocials fits one person or a small team answering comments on six platforms and DMs on three, where buyers hide in the pile. If your page lives on Instagram and needs flows or WhatsApp, Manychat is the better pick. Agorapulse suits a team that wants moderation rules and assignment. Sprout Social is priced for a newsroom budget, and Hootsuite fits a team whose comments don't come from YouTube.

Platform limits every tool works inside

Instagram sets the tightest clock. Public comment replies have no time limit, but a private reply to a comment is allowed once per comment, within 7 days of the comment being posted. A DM can only go out within 24 hours of the person's last message, and each new message from them restarts that clock.

YouTube has no DM API for any tool, so every answer there is a public reply.

TikTok DMs are reply-only: at most 10 replies within 48 hours of the person's last message, on a Business account. A TikTok comment cannot trigger a private DM on any tool outside TikTok's limited rollout in Vietnam, Thailand and Indonesia. Outside apps also can't hide or delete TikTok comments, which we cover in How to moderate TikTok comments on a business account.