Premium Doodle users:
You can invite as many as 1000 participants per poll via email.
While using the Premium trial version, you can invite 10 participants per poll via email. Once the trial is over and your paid subscription begins, the limit is lifted.
If you need more information or want to try Premium Doodle, click here:
Free Doodle users:
You can invite up to 49 participants per poll via email.
If you have not signed up for a free account you cannot invite participants via email. If you are unable to send email invites, then you do not have a Doodle account or you are not logged in.
Go ahead and log in to your account in order invite up to 49 people. You can create a free account here: http://doodle.com/signup