Please write the announcement in third person, exactly as you want it sent out.
Proofread your announcement carefully before you hit “Send” – it will not be proofread or rewritten by the webmaster. Note, if you make a mistake in the announcement the website will be updated but a correction notice is NOT sent out. As the notices are also placed on the website make them time insensitive, i.e. use a date rather than relative terms such as “tomorrow.”