Looking for logging into the Thunderbird Sende Daten site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Thunderbird Sende Daten site. After that you can login as usual with your login credentials.
https://www.thunderbird-mail.de/forum/thread/69266-thunderbird-schickt-login-daten/
https://support.mozilla.org/de/kb/senden-und-empfangen-von-e-mails-mit-thunderbird
https://support.mozilla.org/de/kb/probleme-senden-und-empfangen-nachrichten
https://support.mozilla.org/de/kb/nachrichten-knnen-nicht-gesendet-werden
https://support.mozilla.org/de/kb/identitaeten-verwenden
https://support.mozilla.org/en-US/kb/sending-and-receiving-messages-thunderbird
https://community.upc.ch/t5/Internet-mit-Modem/Thunderbird-login-beim-Senden-fehlgeschlagen/td-p/79805
https://addons.thunderbird.net/de/thunderbird/addon/getsendbutton/
https://praxistipps.chip.de/thunderbird-email-passwort-aendern-so-gehts_13181
https://www.tecchannel.de/a/e-mails-mit-thunderbird-zeitversetzt-senden,2040123
https://www.lehrer.uni-karlsruhe.de/docs/email/thunderbird.html
https://www.youtube.com/watch?v=XaWLWWFy9r8
https://www.youtube.com/watch?v=0HCQhptTtmg