You do not need a Doodle account to participate in a group poll.
Step-by-step:
Respond to a group poll invitation by following these simple steps:
Open the invite link to the event
Enter your availability
Click ‘Continue’
Provide your name and email
Click ‘Continue as guest’
After you click ‘Continue as guest’, you will be brought to a confirmation screen detailing your response to the group poll. The event organizer will review the poll responses and select a final date and time for the event based on the responses to the poll. You will receive a confirmation email once the organizer selects the final date and time for the event, along with location of the event and any other important information.