Feedme plugin - importing users into craft commerce I have few questions about importing users into Craft CMS using feedme. These users would be also Craft Commerce customers.

Users will be imported without passwords. Would this provide some kind of security risk, for example, someone being able to log in with empty password?
Setting new passwords for users - would I need to write custom module to send password reset form to each imported user? Would not sending 5000 emails at once choke Craft - maybe I should use tasks for that?
Addresses - do i need to write some custom plugin for importing adddress data along with basic user data like email? I didnt saw any fields for setting up user address when i tested importing users using feedme. Did someone managed to tackle this issue in the past?
Users will be imported without passwords. Would this provide some kind of security risk, for example, someone being able to log in with empty password?

I don't think the imported users will be able to login at all without a password.

Setting new passwords for users - would I need to write custom module to send password reset form to each imported user? Would not sending 5000 emails at once choke Craft - maybe I should use tasks for that?

I handled this by setting a message on the login and forgot password pages, skipping the need to send an email. Something like &quot;Our systems were upgraded on 10-20-2020, if you've not logged in since then you'll need to reset your password first&quot;.

Addresses - do i need to write some custom plugin for importing adddress data along with basic user data like email? I didnt saw any fields for setting up user address when i tested importing users using feedme. Did someone managed to tackle this issue in the past?

Yes, you will need to use a custom module/plugin and listen to feedme events and handle address import with your code.
Something like:
 Event::on(Process::class, Process::EVENT_STEP_AFTER_ELEMENT_SAVE, function (FeedProcessEvent $event) {
   /// your code here dealing with $event-&gt;feedData;         
});