In an effort to find a *reliable* mechanism for sending mass email, we have
migrated from the use of Folders, to Distribution Lists, to (finally)
"Categories". This seems to be the natural migration as limitations and/or
buginess was discovered in the preceeding mechanisms.

Still not reliable it seems.

We have a Public Folder of Contacts for which we maintain Category
membership. When we want to email to a group of people, we select the
Category, then pull down Actions, New Message to Contact.

We get the normal warning "Not all contacts have email addresses"
blahblahblah, and then proceed to the New Mail dialog to compose.

However, if there are MORE THAN 249 contacts, this process errors before we
get the New Mail dialog, with the very detailed explanation of "The operation
failed". Wow.

Through trial and error I arrived at the 249 count. It seems to fit. No
matter what contacts I select, if there are more than 249, it fails.

Any insight into this? Something I am missing? Known bug? Known
limitation (that I can't seem to find any reference to)?

TIA,