Which user-agent strings identify Missinglettr Bot?

The following user-agent strings identify Missinglettr Bot: Mozilla/5.0 (compatible; MissinglettrBot/2.0; +http://missinglettr.com/bot/).

Does Missinglettr Bot respect robots.txt rules?

According to official documentation, Missinglettr Bot does not respect robots.txt rules.

How can I verify Missinglettr Bot traffic with live traffic data?

You can verify Missinglettr Bot requests by checking your server access logs for the documented user-agent strings. For accurate verification, correlate user-agent patterns with IP ranges or verification methods provided by Missinglettr.

What is Missinglettr Bot?

Direct Answer: Missinglettr Bot crawls blog posts to turn them into social media campaigns.

Operator: Missinglettr Type: Advertising Bot Purpose: Social media campaign creation from blog posts

The Missinglettr Bot, operated by Missinglettr, is designed to crawl specific blog posts on customers' sites. Its primary function is to help convert these posts into social media campaigns. The bot is identified by the user-agent string 'Mozilla/5.0 (compatible; MissinglettrBot/2.0; +http://missinglettr.com/bot/)'.

User-Agent Identification

The following user-agent strings identify Missinglettr Bot in your live traffic data:

Mozilla/5.0 (compatible; MissinglettrBot/2.0; +http://missinglettr.com/bot/)

robots.txt Rules for Missinglettr Bot

Respects robots.txt: No

This bot does not commit to following robots.txt

Missinglettr Bot does not officially follow robots.txt directives. The only reliable way to control access is through server-side blocking (IP filtering, user-agent rules in your web server config) combined with log monitoring to verify effectiveness.

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Crawl Behavior

Frequency:Not Documented

Request Pattern:Crawls Specific Blog Posts

Crawl Activity Index

Relative crawl activity for Missinglettr Bot over the past 28 days. Higher values indicate increased crawling intensity compared to the period baseline.

View recent activity data (last 7 days)

Date	Activity Index
Mar 26, 2026	88.0
Mar 27, 2026	82.7
Mar 28, 2026	83.1
Mar 29, 2026	81.8
Mar 30, 2026	87.3
Mar 31, 2026	90.2
Apr 1, 2026	88.9

Source: Cloudflare Radar

Why track Missinglettr Bot traffic?

Verify ad system crawling behavior. Missinglettr Bot evaluates your pages for ad targeting, quality scoring, and policy compliance.

Optimize ad delivery. If Missinglettr Bot can't properly access certain pages, ad targeting and revenue may be impacted. Log monitoring confirms accessibility.

Log Verification

To verify Missinglettr Bot traffic in your live traffic data:

Search access logs for the user-agent strings listed above
Check if the IP addresses match documented ranges (if provided by Missinglettr)
Verify the crawl pattern matches documented behavior
Use reverse DNS lookup for additional verification if available

Note: Observed behavior in production environments may differ from official documentation. Live traffic monitoring provides the only reliable verification of actual bot behavior.

Undocumented Information

The following information is not officially documented for Missinglettr Bot:

crawl frequency
IP verification
JavaScript rendering

Official Documentation

View Official Missinglettr Bot Documentation →

Information sourced from official documentation. Content generated with AI assistance.