Hi, I guess the suggested contacts returns matching contacts alphabetically.
I'm not sure SmarterMail keeps track of how many interactions you had with a specific contact.
A adding a "sent mails" counter to each contact, incrementing every time you send a mail to this contact could do the trick so it can sort suggestions with this field
And/or a "last mail sent" field with the date of last interaction with the contact.
Maybe ST could add your request to feature requests ?
Sébastien Riccio
System & Network Admin
https://swisscenter.com