What is Missinglettr Bot?

Missinglettr Bot is an intelligence gatherer operated by Missinglettr. Agent Analytics can track when it visits your website.

Overview

Operated By Missinglettr
Expected To Follow Robots.txt Yes
Insights Last Updated August 11, 2026

Do you operate this agent? Contact us to suggest an update.

Category

Intelligence Gatherer
Analyzes web content for brand safety, competitive insights, and ad targeting

Expected Behavior

Missinglettr Bot usually returns to a small set of pages rather than crawling an entire site. Visits may follow an hourly, daily, or weekly schedule, while websites its clients do not monitor may never encounter it.

How To Block Missinglettr Bot With Robots.txt

Add this rule to your robots.txt file to block Missinglettr Bot from accessing your entire website, or use Automatic Robots.txt to block all intelligence gatherers at once. You can customize which pages are blocked by swapping out / for a different path.

User-agent: Missinglettr Bot # https://knownagents.com/agents/missinglettr-bot
Disallow: /

Global Statistics for Missinglettr Bot

As of August 11, 2026, this data reflects agent visits measured across thousands of websites using Agent Analytics, combined with daily scans of the top 1000 websites and their robots.txt files.

Robots.txt Blocked Percentage

0%
0% of top websites are blocking Missinglettr Bot
Learn How →

Country of Origin

Unknown
Missinglettr Bot has no known country of origin

Robots.txt Blocking Trend

0% of top websites block Missinglettr Bot in their robots.txt files.

Overall Intelligence Gatherer Traffic

3.5% of all web traffic came from intelligence gatherers.

Frequently Asked Questions

Should I Block Missinglettr Bot?

If you run ads, confirm Missinglettr Bot's purpose before blocking it. Some intelligence gatherers measure ad placements or evaluate pages for brand safety, and blocking those agents can interfere with advertising systems. If this one serves a different purpose, weigh any research visibility against sharing business or page-level data with third parties. Almost none of the top websites we track currently have robots.txt rules for Missinglettr Bot.


Does Missinglettr Bot Follow Robots.txt Rules?

Yes. Missinglettr Bot is expected to follow robots.txt directives, so a disallow rule is the appropriate first step. Automatic Robots.txt can add and maintain that rule, while Agent Analytics lets you verify whether Missinglettr Bot respects it.


Does Missinglettr Bot Access Private Content?

No special access. Missinglettr Bot can read publicly available pages but cannot bypass authentication. Assume anything you publish openly may be collected.


Why Is Missinglettr Bot Visiting My Website?

A client of Missinglettr may be gathering competitive intelligence, measuring advertisements, or evaluating content for brand safety. The pages requested reflect that client's objective.


How Can I Tell if Missinglettr Bot Is Visiting My Website?

Agent Analytics tracks Missinglettr Bot visits in real time alongside every other known AI agent, crawler, and scraper. You can also check your server logs for requests whose user-agent string contains "Missinglettr Bot". Look for repeated requests to the same small group of commercial or ad-supported pages. Because Missinglettr Bot does not publish a verification method, any client can claim its identity and a log match is only a clue.