Importing mass users without notifications

Hello Kyle,
I've been following these tutorials to export
www.joomlapolis.com/documentation/278-community-builder/operations-guide/18836-exporting-users
and import
www.joomlapolis.com/documentation/278-community-builder/operations-guide/18837-importing-users
all my confirmed users.
Unfortunately, importation was a failure for two reasons:
1/ The CSV file was too large and only ~1000 users out of ~5000 were imported. How can I import this volume in one go without failure?
2/ Each imported user received an e-mail notification despite the option checked not to do so. How can I be 100% sure that they won't receive any notification?
Thank you for your help.

1/ The CSV file was too large and only ~1000 users out of ~5000 were imported. How can I import this volume in one go without failure?

That's only limited by your server resources. Suggest cutting the table up into multiple CSV and importing 1 batch at a time. In a future release we'll implement automatic batching functionality to avoid this.

2/ Each imported user received an e-mail notification despite the option checked not to do so. How can I be 100% sure that they won't receive any notification?

We can only suppress CBs registration emails. Are you sure they're receiving CBs registration email and not an email from something else?

Here is the e-mail I received on every of my accounts:

Hello Guillermo,


You have been added as a User to testPartage3D by an Administrator.

This email has your username and password to log in to test.partage3d.fr/

Username: Guillermo


Password:


Please do not respond to this message as it is automatically generated and is for information purposes only.

That's Joomla's email. You can disable that in Joomla's user plugin in System > Extensions > Plugins.

Hello Kyle thank you,
I went to
System > Manage > Plugins > Searched for "User - Joomla!" > unchecked "Notification Mail to User"
And  as you said it stopped sending e-mails to imported users.

What would be your advice on how to import the 5000 users cleanly?
 

What would be your advice on how to import the 5000 users cleanly?

Split the CSV into multiple CSV files that your server can handle then import each file 1 by 1.