So you need to have a meeting or conference call with 10 people.
The emails start. Who is available when? Is this option or the other better for most people? If everyone is hitting reply all, then hundreds of emails could be generated.
What a pain!
There are Web-based alternatives (http://www.setameeting.com or http://whenisgood.net).
You log in, set the parameters of options for when to meet, and the email addresses of who is attending. They get an email with a link to a custom preference page. They give their preferences, the Website keeps track of the “votes.” When everyone is done (or as many as you want), you take the best option and send out the invite.
So is next Tuesday at 9 am good for you?