| Country | Company | Website |
| Afghanistan | Afghan Post | www.afghanpost.gov.af |
| Albania | Posta Shqiptare | www.postashqiptare.al |
| Algeria | Poste Algérie | poste.dz |
| Angola | Correios de Angola | correiosdeangola.ao |
| Argentina | Correo Argentino | www.correoargentino.com.ar |
| Armenia | HayPost | www.haypost.am |
| Aruba | Post Aruba | www.postaruba.com/ |
| Australia | Australia Post | auspost.com.au |
| Austria | Österreichische Post | www.post.at |
| Azerbaijan | Azərpoçt | www.azerpost.az |
| Bahrain | Bahrain Post | www.bahrainpost.gov.bh |
| Bangladesh | Bangladesh Post Office | www.bangladeshpost.gov.bd |
| Barbados | Barbados Postal Service | https://bps.gov.bb/ |
| Belarus | Belposhta | www.belpost.by |
| Belgium | Bpost | www.bpost.be |
| Benin | La Poste du Bénin | laposte.bj |
| Bhutan | Bhutan Postal Corporation | www.bhutanpost.bt |
| Bolivia | Empresa de Correos de Bolivia | www.correosbolivia.com |
| Bosnia & Herzegovina | BH Pošta | www.posta.ba |
| Bosnia & Herzegovina | Hrvatska Pošta Mostar | www.post.ba |
| Bosnia & Herzegovina | Pošte Srpske | www.postesrpske.com |
| Botswana | Botswana Post | www.botswanapost.co.bw |
| Brazil | Correios | www.correios.com.br |
| Brunei | Brunei Postal Services Department | www.post.gov.bn |
| Bulgaria | Bulgarian Posts | www.bgpost.bg |
| Burkina Faso | SONAPOST | sonapost.bf |
| Burundi | Régie Nationale des Postes | www.posteburundi.bi |
| Cambodia | Cambodian Post | www.cambodiapost.com.kh |
| Cameroon | CAMPOST | campostonline.com |
| Canada | Canada Post | www.canadapost.ca |
| Cape Verde | Correios de Cabo Verde | correios.cv |
| Caribbean Netherlands | FXDC Post | www.fxdc-post.com |
| Chile | Correos de Chile | www.correos.cl |
| China | China Post | www.chinapost.com.cn |
| Colombia | Servicios Postales Nacionales | www.4-72.com.co |
| Croatia | Hrvatska pošta | www.posta.hr |
| Cuba | Correos de Cuba | www.correos.cu |
| Curaçao | Cpost International | www.cpostinternational.com |
| Cyprus | Cyprus Postal Services | www.cypruspost.post |
| Czech Republic | Česká pošta | www.cpost.cz |
| Denmark | Post Danmark | www.postdanmark.dk |
| Dominica | General Post Office | publicworks.gov.dm |
| Dominican Republic | Dominican Postal Institute | www.inposdom.gob.do |
| Egypt | Egypt Post | egyptpost.org |
| El Salvador | Correos de El Salvador | www.correos.gob.sv/ |
| Eritrea | Eritrean Postal Service | eriposta.com |
| Estonia | Omniva | www.omniva.ee |
| Ethiopia | Ethiopian Postal Service | ethiopostal.com |
| Faroe Islands | Posta | www.posta.fo |
| Federated States of Micronesia | Micronesia Postal Service | post.gov.fm |
| Fiji | Post Fiji | postfiji.com.fj |
| Finland | Posti | www.posti.fi |
| France | La Poste | www.laposte.fr |
| Georgia | Georgian Post | www.georgianpost.ge |
| Germany | Deutsche Post | www.deutschepost.de |
| Ghana | Ghana Post | ghanapost.com.gh |
| Gibraltar | Royal Gibraltar Post Office | https://post.gi/ |
| Guernsey | Guernsey Post | guernseypost.com |
| Guyana | Guyana Post Office Corporation | www.guypost.gy |
| Honduras | Honducor | www.honducor.gob.hn |
| Hong Kong | Hongkong Post | www.hongkongpost.hk |
| Hungary | Magyar Posta | www.posta.hu |
| Iceland | Íslandspóstur | www.postur.is |
| India | India Post | www.indiapost.gov.in |
| Indonesia | Pos Indonesia | www.posindonesia.co.id |
| Iraq | Iraqi Telecom & Post | www.iraqipost.net |
| Ireland | An Post | www.anpost.ie |
| Isle of Man | Isle of Man Post Office | www.iompost.com |
| Israel | Israel Post | www.israelpost.co.il |
| Italy | Poste italiane | www.poste.it |
| Jamaica | Postal Corporation of Jamaica | www.jamaicapost.gov.jm/ |
| Japan | Japan Post Holdings | www.japanpost.jp |
| Jersey | Jersey Post | www.jerseypost.com |
| Jordan | Jordan Post Company | www.jordanpost.com.jo |
| Kazakhstan | Kazpost | www.kazpost.kz |
| Kiribati | Kiribati Public Service Public | pso.gov.ki |
| Kosovo | Posta e Kosovës | www.postakosoves.com |
| Kuwait | Ministry of Communications | www.moc.gov.kw |
| Kyrgyzstan | Kyrgyz Express Post | kep.kg |
| Latvia | Latvijas Pasts | https://pasts.lv |
| Lebanon | LibanPost | www.libanpost.com |
| Liberia | Ministry of Posts & Telecom | mopt.gov.lr |
| Libya | General Posts & Telecom | libyapost.ly |
| Liechtenstein | Liechtensteinische Post | www.post.li |
| Lithuania | Lietuvos paštas | www.post.lt |
| Luxembourg | Post Luxembourg | www.post.lu |
| Macau | Correios de Macau | www.macaupost.gov.mo |
| Malaysia | Pos Malaysia | www.pos.com.my |
| Maldives | Maldives Post | www.maldivespost.com |
| Mali | Office national des postes du Mali | laposte.ml |
| Malta | MaltaPost | www.maltapost.com |
| Mauritania | La Société Mauritanienne des Postes | http://mauripost.post |
| Mauritius | Mauritius Post | mauritiuspost.mu |
| Mexico | Correos de México | www.correosmexico.com.mx |
| Moldova | Poșta Moldovei | www.posta.md |
| Monaco | La Poste Monaco | www.lapostemonaco.mc |
| Mongolia | Mongol Post | www.mongolpost.mn |
| Montenegro | Pošta Crne Gore | www.postacg.me |
| Mozambique | Correios de Moçambique | www.correios.co.mz |
| Namibia | NamPost | nampost.com.na |
| Netherlands | PostNL | www.postnl.nl |
| New Zealand | New Zealand Post | nzpost.co.nz |
| Nicaragua | Correos de Nicaragua | www.correos.gob.ni |
| Nigeria | Nigerian Postal Service | nipost.gov.ng |
| North Macedonia | North Macedonia Post | www.posta.com.mk |
| Norway | Posten | www.posten.no |
| Oman | Oman Post | www.omanpost.om |
| Pakistan | Pakistan Post | www.pakpost.gov.pk |
| Palestine | Palestine Post | www.palpost.ps |
| Panama | Correos de Panamá | www.correospanama.gob.pa |
| Papua New Guinea | Post PNG | postpng.com.pg |
| Paraguay | Correo Nacional Paraguayo | www.correoparaguayo.gov.py |
| Peru | Serpost | www.serpost.com.pe |
| Philippines | PHLPost | www.philpost.gov.ph |
| Poland | Poczta Polska | www.poczta-polska.pl |
| Portugal | Correios de Portugal | www.ctt.pt |
| Qatar | Qatar Post | qatarpost.qa |
| Romania | Poșta Română | www.posta-romana.ro |
| Rwanda | National Post Office | i-posita.rw |
| Saint Kitts and Nevis | St. Kitts & Nevis Postal Services | post.kn |
| Saint Lucia | Saint Lucia Postal Service | stluciapostal.com |
| Samoa | Samoa Post | samoapost.ws |
| San Marino | Poste San Marino | www.poste.sm |
| Saudi Arabia | Saudi Post | splonline.com.sa |
| Serbia | Pošta Srbije | www.posta.rs |
| Seychelles | Seychelles Postal Service | seychellespost.gov.sc |
| Sierra Leone | SALPOST | https://salpost.gov.sl |
| Singapore | Singapore Post | www.singpost.com.sg |
| Slovakia | Slovenská pošta | www.posta.sk |
| Slovenia | Pošta Slovenije | www.posta.si |
| Somalia | Somali Postal Service | mipt.gov.so |
| South Africa | South African Post Office | postoffice.co.za |
| South Korea | Korea Post | www.koreapost.go.kr |
| Spain | Correos | www.correos.es |
| Sri Lanka | Sri Lanka Post | www.slpost.gov.lk |
| Suriname | Surpost | www.surpost.com |
| Swaziland | Swaziland Posts & Telecom | sptc.co.sz |
| Sweden | PostNord | www.postnord.se |
| Switzerland | Swiss Post | www.post.ch |
| Taiwan | Chunghwa Post | www.post.gov.tw |
| Tanzania | Tanzania Posts Corporation | posta.co.tz |
| Thailand | Thailand Post | www.thailandpost.com |
| The Gambia | Gambia Postal Services Corporation | https://gambiapost.gm |
| Togo | La Poste du Togo | laposte.tg |
| Tonga | Tonga Post | tongapost.to |
| Trinidad and Tobago | TTPost | www.ttpost.net |
| Tunisia | La Poste Tunisienne | poste.tn |
| Turkey | PTT | www.ptt.gov.tr |
| Turkmenistan | Turkmenpochta | www.turkmenpost.gov.tm |
| Tuvalu | Tuvalu Post | tuvalupost.tv |
| Uganda | Posta Uganda | ugapost.co.ug |
| Ukraine | Ukrposhta | www.ukrposhta.ua |
| United Kingdom | Royal Mail | www.royalmail.com.uk |
| United States | United States Postal Service | www.usps.com |
| Uzbekistan | O`zbekiston pochtasi | www.pochta.uz |
| Vanuatu | Vanuatu Post | vanuatupost.vu |
| Venezuela | IPOSTEL | www.ipostel.gob.ve |
| Vietnam | Vietnam Post Corporation | www.vnpost.vn |
| Yemen | Yemen Post | www.post.ye |
| Zambia | ZamPost | zampost.com.zm |
| Zimbabwe | ZimPost | zimpost.co.zw |
