Open Outlook and sign in to your account
Click New Email
In the To field, enter your recipients or a distribution list
Use the Bcc field to hide recipient addresses if sending to multiple people
Add a subject line
Write your email message
Attach any files if needed
Review the recipients and message carefully
Click Send
To send to a large group regularly, create a contact group
Open People or Contacts
Create a new contact group
Add members to the group
Save the group
Start a new email and enter the contact group name in the To field
For very large sends, use mail merge with Outlook and Word
Prepare your recipient list in Excel
Use Word mail merge to create personalized emails
Connect Word to Outlook to send the messages
Check Outlook sending limits before sending mass emails
Avoid sending too many emails at once to prevent spam filtering