This is my first post so please bear with me! Our organization began using Hubspot 2 months ago so we are new to Hubspot's APIs. We operate a web site that is run on Drupal content management system. We are trying to create a opt out/in email subscription page on our own site for people who are not clicking through from a Hubspot generated email.
We have an issue where some emails are being found successfully, while other email addresses are not. I have the Hubspot Contact open in another tab, I am confident the contact's email does in fact exist. I can click on Hubspot's own Unsub page for this same contact. Part of my testing is I created a brand new contact's email, changed it's status to Subscriber, then use the custom usnub page we built the API on and it tells me an error of "Email address could not be found".
Our Drupal developer built the web page and use of this API is successful for some emails (including 2 of my own emails). He is an advanced drupal developer so I do not suspect it is his code acting up. It feels like Hubspot is being a problem with some emails and I dont know why.
Here is the web page our developer built w the API on: https://westerncentralny.aaa.com/form/hubspot-subscribe-unsubscribe?zip=14221
Here is an email that does not work that I just set up as a new Contact yesterday in Hubspot so you can see the error produce:
Thanks all for any questions and feedback, I appreciate your time here.