Right now, if I want to import all my contacts, it will not allow me to import more than 1K per upload, improve to at least try 10K per upload.

To export contacts its even worst, there is no way I can download more than 100 of my contacts, this is annoying.

Also, allow massive tagging and massive filtering of such tags, for example, tagging "bounce" for a given email and being able to "filter" such email to avoid bad email sender health and reputation