老板要召集各位开会，要我用英文发E-mail通知每个人，请给个大概的模板，格式。

Dear sir:

I would like the invite you to attend our meeting in (会议地点） at (会议时间）on(日期或星期几）, these meeting is mainly about (会议主题）

Please advice me if you are not able to attend.

Thank you

Sincerely
(寄信人名称或公司职务）
（时间日期）

大体这样呵‘‘‘

Dear 姓，
A meeting held by our boss will start at 时间 at 地点，and you are supposed to attend it .
yours
你的姓名

Dear ...
This is to inform you that a meeting will be held in XX room on XX day at XX （时间). Please be there.

Sincerely,
XX (你的名字+职位)