What is the mbox cookie?
Adobe Target uses cookies to give website operators the ability to test which online content and offers are more relevant to visitors.
Our October 2026 scan found it on 40 sites (2% of the 2,450 we scanned), set before any consent.
- Purpose
- Advertising
- Belongs to
- Adobe Audience Manager
- Set as
- First-party (under the site's own domain)
- Typical lifetime
- 13 months (vendor says: 2 years) — shorter than the vendor documents
Sites that set mbox before consent
The highest-ranked 30 of 40 sites.
- adobe.com0 tracking companies
- avast.com5 tracking companies
- dell.com12 tracking companies
- hostgator.com3 tracking companies
- elpais.com7 tracking companies
- box.com8 tracking companies
- hbr.org12 tracking companies
- worldbank.org9 tracking companies
- lg.com2 tracking companies
- bankofamerica.com3 tracking companies
Show 20 more sites
- fidelity.com15 tracking companies
- ancestry.com5 tracking companies
- as.com7 tracking companies
- canada.ca1 tracking company
- mongodb.com2 tracking companies
- xfinity.com8 tracking companies
- avira.com5 tracking companies
- bitdefender.com4 tracking companies
- ihg.com3 tracking companies
- verizon.com20 tracking companies
- ford.com17 tracking companies
- aarp.org30 tracking companies
- allstate.com2 tracking companies
- mathworks.com3 tracking companies
- telenet.be2 tracking companies
- vanguard.com17 tracking companies
- domain.com6 tracking companies
- pandasecurity.com3 tracking companies
- huntington.com9 tracking companies
- toyota.com19 tracking companies
Related cookies
Other cookies from Adobe Audience Manager.
How to stop it
Declining non-essential cookies in a site's consent banner should stop mbox being set on later visits. Blocking third-party cookies in your browser settings stops the third-party kind everywhere, and clearing cookies for a site removes any it already set.
Description from the Open Cookie Database (Apache 2.0).
Understanding this page
- How cookie lifetimes work, and why a 13-month _ga matters
What a cookie's "expires" field actually controls, why Google Analytics ships a 2-year default that many sites cut down to 13 months, and how Safari's 7-day cap on script-set cookies changes the picture.
- First-party vs third-party cookies (and why "first-party" still tracks you)
What the distinction actually means technically, why browsers only block one of the two, and how CNAME cloaking, server-side tagging and cookies like _ga let sites keep tracking under their own domain.
- How to block or limit trackers
Browser privacy settings, content blockers, Global Privacy Control and clearing cookies compared honestly — what each one actually stops, what it doesn't, and what it costs you in return.