How to clear wrong suggested contacts

The list of recipients suggested in Composer's recipient editor is collected from:

1. Sender's email address, Bcc, Cc, etc.
2. Collected from contacts with mail addresses registered in Nine contacts.
3. GAL search results.

If you see the wrong email address, it is probably the mail address registered above 1,2.

If you clear the following setting, it will clear the caching data of case 1 in the above cases.

Nine - Settings > General > Composer > Clear suggested contacts

Please, check the contacts stored in Nine contacts in step 2.