Yahoo is an internet media and technology company formerly owned by Verizon Media. Yahoo was purchased from Verizon Media by Apollo Global Management, Inc. in September, 2021.
Many mailbox providers use the Yahoo email infrastructure for processing email including AOL, Verizon, AT&T, and more.
- Yahoo Mail has approximately 300 million email accounts.
- AOL has approximately 24 million email accounts.
Infrastructure
| Region | Global |
| Yahoo Domains |
Geocities.com, kimo.com, maktoob.com, oddpost.com, yahoo.at, yahoo.be, yahoo.bg, yahoo.ca, yahoo.cl, yahoo.co.hu, yahoo.co.id, yahoo.co.il, yahoo.co.in, yahoo.co.kr, yahoo.co.nz, yahoo.co.th, yahoo.co.uk, yahoo.co.za, yahoo.com, yahoo.com.ar, yahoo.com.au, yahoo.com.br, yahoo.com.cn, yahoo.com.co, yahoo.com.hk, yahoo.com.hr, yahoo.com.mx, yahoo.com.my, yahoo.com.pe, yahoo.com.ph, yahoo.com.sg, yahoo.com.tr, yahoo.com.tw, yahoo.com.ua, yahoo.com.ve, yahoo.com.vn, yahoo.cz, yahoo.de, yahoo.dk, yahoo.ee, yahoo.es, yahoo.fi, yahoo.fr, yahoo.gr, yahoo.hr, yahoo.hu, yahoo.ie, yahoo.in, Yahoo.it, yahoo.lv, yahoo.nl, yahoo.no, Yahoo.pl, yahoo.pt, yahoo.ro, yhoo.rs, yahoo.se, Yahoo.si, yahoo.sk, yahoogroups.co.kr, yahoogroups.com.cn, yahoogroups.com.sg, yahoogroups.com.tw, yahoogrupper.dk, Yahoogruppi.it, yahoomail.com, ymail.com, y7mail.com |
| AOL Domains |
aol.com; aim.com; aim.net; americaonline.com.mx; aol.ca; aol.co.uk; aol.com.au; aol.com.br; aol.com; aol.com.mx; aol.de; aol.es; aol.fr; aol.in; aol.it; aol.nl; aol.pl; aol.ru; aolsouthamerica.net; brazilaol.net; cs.com (Compuserve); netscape.net |
| Verizon Domains |
verizon.net, verizon.com, bellatlantic.net, bizmailsrvcs.net; gte.net, managedmail.com |
| AT&T | Ameritech.net, att.net, bellsouth.net, flash.net, nvbell.net, pacbell.net, prodigy.net, sbcglobal.net, snet.net, swbell.net, wans.net, worldnet.att.net |
| BT | btopenworld.com, mybtinternet.com, talk21.com |
| Rogers | rogers.com |
| Sky | sky.com |
| Connection/throughput |
Yahoo does not provide specific guidelines for the connection and throughput settings, but we recommend starting with:
You may need to adjust these settings based on what Yahoo accepts from your servers. If you do not respect their resources, your email may not be accepted for delivery. |
| Complaint Feedback Loop (CFL) application |
The Yahoo CFL program helps senders minimize complaint rates for email sent to Yahoo, AOL, and Verizon domains. |
| Postmaster site |
Delivery mediation
Yahoo provides a link for the public escalation of delivery issues to AOL and Yahoo domains.
Validity guidance
Validity understands Yahoo's anti-spam system well and we can provide data to help senders understand delivery issues.