Consider whether the content of the email should be encrypted or password protected. Your IT or security team should be able to assist you with encryption.
When you start to type in the name of the recipient, some email software will suggest similar addresses you have used before. If you have previously emailed several people whose name or address starts the same way - eg “Dave” - the auto-complete function may bring up several “Daves”. Make sure you choose the right address before you click send.
If you want to send an email to a recipient without revealing their address to other recipients, make sure you use blind carbon copy (bcc), not carbon copy (cc). When you use cc every recipient of the message will be able to see the address it was sent to.
Be careful when using a group email address. Check who is in the group and make sure you really want to send your message to everyone.
If you send a sensitive email from a secure server to an insecure recipient, security will be threatened. You may need to check that the recipient’s arrangements are secure enough before sending your message.