Automated DM and comment flows — a comment on a post triggers a scripted DM reply, or a keyword in a message triggers an auto-response. This is a genuinely uneven category: several well-known tools (Agorapulse, Sendible, Publer, Tailwind) don’t support it on any plan at all.
Tools profiled here
Vista Social has the deepest DM automation we’ve verified — a visual flow builder spanning X, TikTok, YouTube, Facebook, LinkedIn, Google Business Profile, Threads, and Instagram. SocialPilot also genuinely supports it — auto-DM for a comment and auto-reply to a DM on Facebook and Instagram. RecurPost ships DM automation and a DM/comment inbox in its base plans as well — disclosure: same team as this site.
Where this matters
Comment-to-DM automation is most useful for accounts running giveaways, product drops, or high-comment-volume content where manual DM follow-up doesn’t scale. It’s close to irrelevant for a low-volume B2B posting cadence.