{"id":2695,"date":"2026-02-14T12:53:21","date_gmt":"2026-02-14T12:53:21","guid":{"rendered":"https:\/\/help.markto.ch\/?post_type=manual_kb&p=2695"},"modified":"2026-02-14T12:53:21","modified_gmt":"2026-02-14T12:53:21","slug":"privacy-in-communication-what-data-is-shared-and-how-to-control-it","status":"publish","type":"manual_kb","link":"https:\/\/help.markto.ch\/de\/knowledgebase\/privacy-in-communication-what-data-is-shared-and-how-to-control-it\/","title":{"rendered":"Datenschutz in der Kommunikation: Welche Daten werden weitergegeben und wie kann man sie kontrollieren?"},"content":{"rendered":"

Privacy in Communication: What Data Is Shared and How to Control It on markto.ch<\/strong><\/p>\n\n\n\n

markto.ch keeps user privacy relatively high by design \u2014 it is a minimal local classifieds platform with no built-in chat, no payment processing, and no extensive user profiling. Below is a clear overview of what data is actually shared during communication and how you can control \/ minimize it.<\/p>\n\n\n\n

What Data Is Shared (and With Whom)<\/h3>\n\n\n\n
Situation<\/th>Data Shared<\/th>Shared With<\/th>Visible Publicly?<\/th><\/tr><\/thead>
Browsing ads (no login)<\/td>None (only IP for basic analytics, not linked to you)<\/td>markto.ch servers only<\/td>NEIN<\/td><\/tr>
Viewing an ad<\/td>Your IP address (standard web logging)<\/td>markto.ch<\/td>NEIN<\/td><\/tr>
Sending a message via form<\/td>Your entered name, email, phone (if provided), message text<\/td>Seller (via forwarded email) + markto.ch<\/td>No (only seller sees)<\/td><\/tr>
Phone number in your ad<\/td>Full phone number (if you choose to display it)<\/td>Anyone viewing your ad<\/td>Yes (if enabled)<\/td><\/tr>
WhatsApp link in ad or messages<\/td>Your WhatsApp number (masked until chat accepted)<\/td>People who click the link<\/td>Only if you add it<\/td><\/tr>
E-Mail-Antworten<\/td>Your email address<\/td>The other party<\/td>NEIN<\/td><\/tr>
Meeting coordination (WhatsApp)<\/td>Location pins, photos you send, voice notes<\/td>The other party only<\/td>NEIN<\/td><\/tr>
Account registration<\/td>Email + optional name \/ phone (not required for basic use)<\/td>markto.ch<\/td>NEIN<\/td><\/tr>
Payment details<\/td>None \u2014 markto.ch never sees cash, TWINT, bank info<\/td>Never shared with platform<\/td>NEIN<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Important notes:<\/strong><\/p>\n\n\n\n

    \n
  • markto.ch tut nicht<\/strong> collect or share full names, addresses, ID documents, bank details, or payment info unless you<\/strong> voluntarily include them in messages.<\/li>\n\n\n\n
  • No persistent chat history is stored on markto.ch servers \u2014 messages live only in your email or WhatsApp.<\/li>\n\n\n\n
  • No tracking cookies or ads that follow you across the web (platform is very lightweight).<\/li>\n<\/ul>\n\n\n\n

    How to Control & Minimize Your Data Exposure<\/h3>\n\n\n\n
      \n
    • Hide your phone number completely<\/strong>
      When creating\/editing an ad \u2192 uncheck \u201cTelefonnummer anzeigen\u201d or leave the field blank.
      \u2192 Buyers must use the message form or WhatsApp link first \u2192 you decide when\/if to share your number.<\/li>\n\n\n\n
    • Use WhatsApp links instead of raw phone numbers<\/strong>
      Add a wa.me\/yournumber link in the ad description.
      \u2192 People message you without seeing your number until you accept the chat.<\/li>\n\n\n\n
    • Use a secondary \/ burner number<\/strong>
      Get a cheap prepaid SIM (CHF 10\u201320 from Aldi, Lidl, Salt, Yallo) or WhatsApp Business with a separate number just for markto.ch.
      \u2192 Keeps your main personal number private.<\/li>\n\n\n\n
    • Limit what you enter in message forms<\/strong>
      Use only a first name (or nickname), a throwaway email if you want, and avoid including address or ID details until trust is built.<\/li>\n\n\n\n
    • Never share sensitive info<\/strong>
      Do not send: full home address, bank IBAN, ID photos, passwords, exact workplace, or family details \u2014 even after chatting for days.<\/li>\n\n\n\n
    • Control location sharing<\/strong>
      Only send WhatsApp location pins 10\u201315 min before meeting (and only after agreeing on public spot).
      Never send your live location for long periods.<\/li>\n\n\n\n
    • Delete\/archive chats after deals<\/strong>
      In WhatsApp: Archive or delete conversations once completed.
      In email: Archive threads or create a \u201cmarkto Deals\u201d folder.<\/li>\n\n\n\n
    • Use incognito\/private browsing<\/strong>
      When browsing ads without logging in \u2014 prevents cookies from linking sessions.<\/li>\n\n\n\n
    • Report privacy issues<\/strong>
      If someone misuses shared info (harassment, spam after deal), block them + report via footer \u201cKontaktieren Sie uns\u201d.<\/li>\n<\/ul>\n\n\n\n

      Quick Privacy Checklist<\/h3>\n\n\n\n
        \n
      • Phone hidden in ad? \u2192 Yes<\/li>\n\n\n\n
      • Using WhatsApp link or secondary number? \u2192 Yes<\/li>\n\n\n\n
      • Only first name & generic email in messages? \u2192 Yes<\/li>\n\n\n\n
      • Location pins only right before meetup? \u2192 Yes<\/li>\n\n\n\n
      • No bank\/ID\/home details shared? \u2192 Yes<\/li>\n\n\n\n
      • Chats archived\/deleted after deal? \u2192 Yes<\/li>\n<\/ul>\n\n\n\n

        markto.ch gives you strong control because it avoids storing or processing personal data beyond the absolute minimum. Stay minimal in what you share, use secondary contacts, and always meet in public \u2014 and your privacy stays very well protected.<\/p>\n\n\n\n

        Stay private and trade safely! \ud83d\udd12<\/p>","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"template":"","format":"standard","manualknowledgebasecat":[103],"manual_kb_tag":[],"class_list":["post-2695","manual_kb","type-manual_kb","status-publish","format-standard","hentry","manualknowledgebasecat-advanced-best-practices"],"_links":{"self":[{"href":"https:\/\/help.markto.ch\/de\/wp-json\/wp\/v2\/manual_kb\/2695","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/help.markto.ch\/de\/wp-json\/wp\/v2\/manual_kb"}],"about":[{"href":"https:\/\/help.markto.ch\/de\/wp-json\/wp\/v2\/types\/manual_kb"}],"author":[{"embeddable":true,"href":"https:\/\/help.markto.ch\/de\/wp-json\/wp\/v2\/users\/1"}],"version-history":[{"count":1,"href":"https:\/\/help.markto.ch\/de\/wp-json\/wp\/v2\/manual_kb\/2695\/revisions"}],"predecessor-version":[{"id":2696,"href":"https:\/\/help.markto.ch\/de\/wp-json\/wp\/v2\/manual_kb\/2695\/revisions\/2696"}],"wp:attachment":[{"href":"https:\/\/help.markto.ch\/de\/wp-json\/wp\/v2\/media?parent=2695"}],"wp:term":[{"taxonomy":"manualknowledgebasecat","embeddable":true,"href":"https:\/\/help.markto.ch\/de\/wp-json\/wp\/v2\/manualknowledgebasecat?post=2695"},{"taxonomy":"manual_kb_tag","embeddable":true,"href":"https:\/\/help.markto.ch\/de\/wp-json\/wp\/v2\/manual_kb_tag?post=2695"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}