Short answer
Open the post in InstantDM and click Re-run missed comments, then Continue. InstantDM reads the post's comments in batches of 50 and runs your automation for the ones it never handled, skipping comments already answered. It works on Trendsetter and above (not during the free first week), on one specific post or Reel at a time.
Before you start
- You need Trendsetter, Trendsetter Pro or a Multi plan. The button shows on every plan, but other plans get “Re-running a post is available on Trendsetter and above” after clicking. The free first week doesn’t include it either.
- It works on one specific post or Reel. It doesn’t work on stories, Live, All posts or Next post automations.
- The post needs an active automation. Set it up first if it says No automation configured.
- Instagram allows a private reply only within 7 days of a comment. Older comments will fail.
Steps
- Open Quick Automation, click the Instagram tab (or Facebook), choose Posts and click the post.
- Next to the heading “Post Automations”, click Re-run missed comments.
- Read the window “Re-run missed comments on this post?” and click Continue.
- A progress panel opens. It loads comments 50 at a time and shows each one as Waiting, Processing, Queued, Already done or Failed, with totals at the top.
- Leave it running until it finishes, then click Close. To end early, click Stop.
- If you close the panel while it runs, you’ll see “Stopping after the current comment…” and it stops too.
- Check the result later in the post’s All Comments tab, and look in Automation Recovery → Missed & Failed for any that Instagram refused.
On the phone app
Home → Instagram → Posts → tap the post → Re-run missed comments → confirm. The app shows the same counters (Queued, Already done, Failed) and a Stop button. It works on posts and Reels only.
What your followers see
People whose comments were missed get the same DM and public reply as everyone else, just later.
Good to know
- Skipped automatically: comments already handled, your own account’s replies, and replies inside comment threads.
- Re-run looks back at comments already on the post. To catch new comments Instagram doesn’t report, use Comment Pooling in Automation Recovery (also Trendsetter and above). See when a post goes viral.
- Each comment a re-run queues is remembered for 7 days, so running it twice should not DM the same comment twice.
- Comments older than 7 days are tried but Instagram refuses them. They then appear in Missed & Failed and can’t be resent.
What you can’t do
- Re-run stories, Live videos, all-posts or next-post automations (“Re-run is only available on a specific post or reel”).
- Answer comments older than 7 days.
- Use Re-run on Free or Legend Pro, including during the first-week trial.
If it doesn’t work
- “Re-running a post is available on Trendsetter and above”: upgrade in My Plan to use it.
- “You are out of credits — top up and try again”: you have no credits left. Upgrade or renew, then try again.
- “Rate limited by Instagram/Facebook — try again in 30–60 minutes”: Instagram is limiting requests. Wait and run it again.
- The button is greyed out: a re-run is already running on this post (wait for it to finish, then click Close), or you are a team member without permission to edit automations.