If you send the activities to your customers on regular basis, you should consider setting up a chronjob.
On your server management page, you have to create a chronjob pointing to this file:
your/server/root/cli/tracktime.php -a [options]
The a switch tells TrackTime to send the activities, you can add these options:
--sendtome sends to the email address you put in the component params the same email you're sending to
the customer, so you can control what's going on.
--template [integer] If you want to use a particular template, use its ID
--subject [string] If you want to use a particular mail subject, you can use this option. If the string
contains spaces, remember to enclose it with double quotes, ie --subject "Activity report"
A complete chronjob is something like this:
your/server/root/cli/tracktime.php -a --sendtome --template 6 --subject "Activity report"