postmatic is a Chrome extension built for X.com. Its core function is to automatically generate and publish comments under relevant posts based on the tone, topics, and frequency set by the user, with the goal of increasing visibility, engagement, and follower growth. It mainly targets founders, Build in public users, executives, and creators. Its positioning is very specific: it is not a general-purpose social media management platform, but a tool focused specifically on automated commenting on X.
The product lets users write custom prompts in natural language to define comment style, areas of expertise, and goals. Users can also configure Approved Topics, Blocked Topics, Blocked Profiles, and engagement frequency ranging from every minute to every hour. The site emphasizes that comments are generated with context in mind, and that the AI can be trained through thumbs-up/thumbs-down feedback. It runs natively inside the X.com interface; after installing the extension, it uses the existing logged-in session and does not require the user to provide an X password or API Key. It is suitable for people who want to consistently appear in the comment sections of major accounts in their industry but do not have time to engage manually.
The free trial lasts 3 days and includes 5 automated comments per day. After the trial ends, an upgrade is required. The Pro plan costs $9.99/month when paid monthly, and includes unlimited automated comments, custom rules, and priority support. The annual plan costs $99/year, saving about $20 compared with monthly billing. All paid plans come with a 30-day money-back guarantee, and payments are handled by Stripe.
The advantages are that it is easy to get started, has a clearly defined use case, offers fairly granular control over frequency and topics, and emphasizes local browser-based operation without sharing an X password. The drawbacks are also obvious: the site does not disclose the specific AI model used, Chinese-language support, or any evaluation of generation quality. Automated commenting also naturally carries account risk and potential platform policy issues. Its privacy claims need further verification as well: the page says data does not leave the device, while the FAQ mentions OAuth and access to interacted posts, but it does not clarify whether third-party models are called.
postmatic is better suited to founders, creators, and personal brand operators who use English-language X as their main channel. If your primary focus is Chinese-language platforms, its value will be significantly lower. The main content does not provide information about access from mainland China. Since X itself usually requires a special network environment, actual usage may be affected by network conditions. For payments, it uses Stripe, so domestic users should also confirm whether their bank cards are supported. Alternative tools include Tweet Hunter, Typefully, Hypefury, Buffer, and others.
β This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on postmatic.ai official site.
postmatic.ai is an Unknown AI Apps provider. TG4G tracks its product information, an overall rating of 7.0/10, and a China-accessibility score of Workable. Click "Visit Official Site" to reach postmatic.ai directly.