Every e-mail sent from the mailing lists needs to contain a link to unsubscribe from that list. (this is not to in case of a CRM tool)
The unsubscribe page has a form where the user can type in the e-mail address and press a button.
The server generates an authorization code and sends by e-mail to the user and redirects the user to a new custom page.
The user gets the e-mail. Clicks on the link. This removes the address from the database, shows a thank you page and send an e-mail confirmation that the address was removed.
Every e-mail sent from the mailing lists needs to contain a link to unsubscribe from that list. (this is not to in case of a CRM tool)
The unsubscribe page has a form where the user can type in the e-mail address and press a button. The server generates an authorization code and sends by e-mail to the user and redirects the user to a new custom page.
The user gets the e-mail. Clicks on the link. This removes the address from the database, shows a thank you page and send an e-mail confirmation that the address was removed.