01 · Operator
Who operates SenderBot
- Company
- Sender Online Marketing GmbH
- Type
- SEO tool crawler
- Official docs
- sender-marketing.de
02 · Behavior
What SenderBot does
SenderBot reads public web pages and extracts links between pages and the main text. It processes only German-language content. It fetches at most one page per second per site, with a daily page limit. It does not run JavaScript, download media, fill in forms or train AI models.
03 · Impact
Why SenderBot matters for your site
If you allow it
- It honors robots.txt, Crawl-delay and noindex/nofollow
- It crawls at a low, capped rate
If you block it
- Data is used for the agency's client projects, not for traffic to you
- No IP ranges are published for verification
04 · Allow
How to allow SenderBot
robots.txt
User-agent: SenderBot
Allow: /Cloudflare
# Security › WAF › Custom rules › Create rule
Expression: (http.user_agent contains "SenderBot")
Action: Skip › All Super Bot Fight Mode rules
# Also check Security › Bots: "Block AI bots" can block it regardless of robots.txt.WordPress
# WordPress serves a virtual robots.txt. Edit it with your SEO plugin:
# Yoast: SEO › Tools › File editor · Rank Math: General Settings › Edit robots.txt
User-agent: SenderBot
Allow: /nginx
# nginx serves every user agent by default.
# Make sure no rule like this blocks it:
# if ($http_user_agent ~* "SenderBot") { return 403; }Apache
# Apache serves every user agent by default.
# Make sure .htaccess has no rule like this:
# RewriteCond %{HTTP_USER_AGENT} SenderBot [NC]
# RewriteRule .* - [F,L]05 · Block
How to block SenderBot
SenderBot follows robots.txt, so one rule is enough. Use a server or CDN rule only to stop spoofed copies.
robots.txt
User-agent: SenderBot
Disallow: /Cloudflare
# Security › WAF › Custom rules › Create rule
Expression: (http.user_agent contains "SenderBot")
Action: BlockWordPress
# WordPress serves a virtual robots.txt. Edit it with your SEO plugin:
# Yoast: SEO › Tools › File editor · Rank Math: General Settings › Edit robots.txt
User-agent: SenderBot
Disallow: /nginx
# In your server { } block:
if ($http_user_agent ~* "SenderBot") {
return 403;
}Apache
# .htaccess
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} SenderBot [NC]
RewriteRule .* - [F,L]
</IfModule>06 · User agents
User agents we see for SenderBot
| User agent | Share | Last seen | Status |
|---|---|---|---|
Mozilla/5.0 (compatible; SenderBot/1.0; Sender Online Marketing GmbH; +https://sender-marketing.de/bot) |
100% | Unverified |
07 · Verification
Is it really SenderBot?
SenderBot’s operator publishes no IP ranges or hostnames, so requests cannot be verified. Treat the user agent as a claim, and watch your logs for unusual request rates.
FAQ
Questions about SenderBot
What is SenderBot?
SenderBot is a crawler run by Sender Online Marketing GmbH. It collects links and main page text from German-language websites.
How do I block SenderBot?
Add User-agent: SenderBot with Disallow: / to robots.txt. Changes take effect within 24 hours because the file is cached.
Does SenderBot train AI models?
No. The operator states that SenderBot does not train AI models and that collected texts are not published, shared or sold.
Last reviewed Oct 8, 2026