Yahoo Link Preview
Preview

Yahoo Link Preview

Yahoo Link Preview is a user-triggered Yahoo Mail page-fetch client that retrieves a shared page to generate a thumbnail, title, and description; Yahoo explicitly describes it as not a crawler.

Operator Yahoo

About this bot

Yahoo Link Preview is a on demand fetcher associated with Yahoo and used for yahoo mail link preview.

Primary directory identity signal: Yahoo Link Preview. Representative HTTP identity: Mozilla/5.0 (compatible; Yahoo Link Preview; https://help.yahoo.com/kb/mail/yahoo-link-preview-SLN23615.html).

Directory status: Active. Identity classification: Verified with High confidence. Identity type: official documented.

robots.txt is not recorded as a reliable control for this traffic. Use request authentication, application controls, firewall policy, or service configuration when restriction is required.

Risk classification: Safe. Recommended handling is to generally allow or monitor rather than block by identity alone.

How to identify this bot

User-agent and crawler identifiers
Yahoo Link Preview Mozilla/5.0 (compatible; Yahoo Link Preview; https://help.yahoo.com/kb/mail/yahoo-link-preview-SLN23615.html)
Also known as
Yahoo Preview

Details

Kind
On demand fetcher
Family
Yahoo Mail
Purpose
Yahoo mail link preview
Common Use
Generating thumbnail images, page titles, and descriptions for URLs referenced in Yahoo Mail messages.
Respects robots.txt
No

Verification

Identity Type
Officially documented
Evidence Method
Match the documented Yahoo Link Preview HTTP identity and corroborate with user-triggered single-URL preview behavior.
Detection Notes
The client fetches pages referenced by Yahoo Mail users and does not systematically crawl websites.
Website controls
Apache Rule
SetEnvIfNoCase User-Agent "Yahoo Link Preview" botcrawl_match=1
Nginx Rule
if ($http_user_agent ~* "Yahoo\ Link\ Preview") { set $botcrawl_match 1; }

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