Contact
One address, read by the person who runs the site.
Corrections
The most useful thing you can send. Release dates move, seasons get split across years, and studios reshuffle their calendars with no notice. So if a date, runtime, episode count or position here is wrong, say so and it will be fixed.
A link to where the right answer is published helps, but is not required. Changes that alter what a page says are recorded on the updates page.
Disagreeing with an order
Also welcome. Chronological orders and the essential-or-optional calls are judgements, explained on each page precisely so they can be argued with. Several currently read the way they do because somebody made a better case.
What the site will not do is drop the judgement and list everything as equally important. Deciding what you can skip is the point of it.
Privacy and data requests
Requests under the Digital Personal Data Protection Act go to the same address. Be aware of what that can achieve here: there are no accounts, and what you have marked as watched never leaves your browser, so in most cases the honest answer to “what do you hold on me” is nothing at all. The privacy notice sets out the detail.
Everything else
Missing franchises, suggestions, or anything the site gets wrong in a way not covered above. It is one person answering, so a reply may take a few days.
There is no contact form on purpose. A form would send the same email through a server this site does not otherwise need, and would mean receiving personal data the privacy notice currently promises never reaches us.