Simply replace the unfilled areas such as "[]" and "[date]" with your information.
Dear [name],
We are very pleased to welcome [full name of new executive] to [name of company]. [First name of executive] will be heading up the [name of executive's area] area. [He/She] brings a wealth of knowledge and experience to the table, and we are very excited to have them here.
As [first name of executive] gets settled in, please take the time to stop by and say hello. A meet and greet will be scheduled later in the week to allow employees to visit with [first name of executive] and get to know [him/her] better.
We know you will make [first name of executive] welcomed and will help [him/her] in anyway you can as [he/she] becomes more familiar with the company.
Thanks,