You may click on the "Add Contact" button to send a notification to the other member that you want to add them as a contact. Once they accept, you will be on each other's contact list. After contacting, you can exchange emails and chat with that member without any time limit. Online members are shown at the top of your page, together with your matches and other new members.
Contacting privileges are different for male and female members of ThaiKisses. For chats and emails, female members can send unlimited messages to other members. Female members are also not barred from messaging another member; they can message them right in without having to add them as a contact first. However, female members are not allowed to send their personal contact information like phone numbers and email addresses.
On the other hand, male members are limited to 1 free contact per day, or can only use the feature if they upgrade to a Gold Membership. The site did not explain why, but it can be associated with having fewer female population compared to male.
There's a limit of 300 contacts per month, regardless of the gold membership package that you bought. This is to protect the members from scammers and spammers. Messages, if not deleted, will stay on your inbox for one year.