Changing email for sending

[Barbara Heck]

Greetings,
I am so stuck on how to change my default email on Open Office when I want
to send a document that I have created.  I no longer have the email that
when I send writings, it always goes to the one email that I no longer
have.  Our little valley of 5500 people has high speed internet and I have
changed our server and dropped the old one.  Help, help, thanks for the
prompt reply, Barbara Heck