Removing Specific Auto-Populate email recipients from auto-populate list

[aquafrank]

I am running AQMail on Android: Samsung Note 3
when composing a new email or forwarding email the to field displays email recipients that I don't want on the list.
The list shows old, outdated email addresses that are not valid.
For that reason I wish to remove it from the auto-populate list similar to how you can in outlook

It is possible?
I have tried long pressing the unwanted contact and exploring the settings for the app to no avail.

[Kostya Vasilyev]

For autocompletion, the app looks up contacts in your phone's system-wide Contacts storage (also known as People app in recent Android versions).

Please use the Contacts / People app to remove those entries.

Or use Gmail's contact editor on their web site (since Android syncs contacts with your device's @gmail account as set in system settings).

https://mail.google.com/mail/u/0/?shva=1#contacts