I followed the steps given here: https://help.surveygizmo.com/help/article/link/create-unique-links
to create unique links. However, a significant number of email addresses were not uploaded for whatever reason. The systems states that they are invalid. Mainly, these addresses start wirh “info@…” But there are also other addresses that failed. All failed addresses are valid addresses, I checked that.
Why? Can I manually generate unique response links for those?
SurveyGizmo has implemented some safeguards to ensure high email deliverability:
Group email addresses such as the info@ that you provided as an example, cannot be added to email campaigns.
I hope this helps clarify what you ran into!