There's no single answer to how fast to respond to buyer messages, because every platform sets its own clock, its own threshold, and its own penalty for missing it. Amazon ties it to an automated metric that can restrict a listing. TikTok Shop just cut its window in half. Here's what's actually documented for each platform, not a rounded-off guess.
How Fast Do I Need to Respond to Buyer Messages on Marketplaces Like Temu and TikTok Shop?
Response time requirements vary by platform, but most major marketplaces expect sellers to reply to buyer messages within 24 hours, with some platforms factoring response speed directly into seller performance scores. That 24-hour figure is a reasonable floor, but a few platforms now expect faster, and the consequences for missing the window range from a quiet ding to a hard cap on order volume.
Platform-by-Platform Response Time Requirements
Amazon: 24 Calendar Hours, No Exceptions
Amazon's rule is the strictest in how it's enforced, if not in how much time it gives. Sellers must respond to buyer messages within 24 hours, and that clock runs on calendar hours, weekends and holidays included, not business hours. A message that arrives at 11pm on a Saturday is still due by 11pm Sunday.
Missing that window doesn't just look bad, it counts directly against Order Defect Rate, the automated metric Amazon uses to gate account health. Push that metric high enough and a seller faces listing restrictions or suspension, enforced by algorithm rather than a human reviewing the case.
eBay: 24 Hours, Softer Enforcement
eBay's own help documentation is direct: respond to buyer messages within 24 hours, including weekends and holidays, and an auto-responder doesn't count as a real reply. Unlike Amazon, eBay doesn't attach response time to a single automated performance score the way Amazon's ODR works. The real cost shows up indirectly: a slow reply is what turns a simple question into an official case, and cases and negative feedback are what actually move a seller's standing on the platform.
TikTok Shop: The Window Just Got Shorter
TikTok Shop has been actively tightening this one. Through most of 2025, the platform phased out its 24-hour response rate metric and replaced it with a 12-hour standard across multiple markets, with the requirement generally set around 85-90% of customer-initiated chats answered manually within that window. Automated replies and bare "hi" or "hello" responses don't count toward the metric.
There's a weekend accommodation, but it comes with a catch: messages from Saturday through Sunday are excluded from the 12-hour clock only if a seller has all three of TikTok's native chatbots activated across pre-sale, logistics, and post-sale. Otherwise, weekend messages are due by Monday at noon regardless. Miss the threshold consistently and TikTok moves from a warning to an Order Volume Limit, a hard cap on how many orders a shop can accept.
Facebook Marketplace: 15 Minutes for the Badge, No Hard Rule
Facebook Marketplace works differently from the others, since there's no performance score tied to messaging, only a reputation signal. Meta's own criteria for the "Very Responsive" badge require a 90% response rate and a 15-minute average response time over the trailing seven days. There's no penalty for falling short of that, a seller just doesn't get the badge, which is itself a real cost in buyer trust on a platform where most transactions are local and informal.
Temu: The One Platform Without a Clear Answer
Temu publishes timelines for return requests, but not a specific number for buyer-message response time, not the way Amazon, eBay, and TikTok Shop do. Until Temu says otherwise, the 24-hour standard most other platforms use is a reasonable floor to work from.
Marketplace Response Time Standards vs. Social Media Response Expectations
A marketplace's response window is tied to a transaction. Amazon and TikTok Shop enforce it because a slow reply can derail a sale that's already in motion or turn a simple question into a dispute. Facebook Marketplace works differently: there's no order at stake, just a badge that signals whether a seller is generally around and responsive.
That difference decides where you should spend limited time. A message on Amazon or TikTok Shop carries a real, automated consequence within hours. A message on Facebook Marketplace mostly costs a badge and a buyer's first impression. Both are worth answering fast, but only one comes with a penalty attached to it.
Managing This Across Multiple Platforms
Running several of these platforms at once means juggling several different time constraints, each with its own definition of a valid response and its own penalty for missing it. A Doba account connected to multiple platforms like Shopify (which you can advertise on Facebook Marketplace), eBay, Amazon, TikTok Shop, and Temu keeps order and inventory data in one place across all of them. Buyer messaging doesn't work that way, it still runs through each platform's own inbox, on each platform's own clock, so there's no shortcut around checking each one.
These thresholds also change without much warning. TikTok Shop cut its window from 24 hours to 12 in the middle of 2025, and most sellers only found out through their own Shop Health dashboard. Doba's free tools are worth checking alongside each platform's policy page, since margin and fee math shift just as often as response-time rules do.
