I have problems when using 'reply all', and yesterday when using a saved email address. Copies of my emails are being sent to people in my address book who are not listed within the addresses selected, but who have similar names. For example, 'Nicola Browne' was also sent to 'Nicola Smith'. A surname 'Kisby' was also sent to a christian name 'Kizzie'. This has now happened on several occasions. Why is it doing this?