> For the complete documentation index, see [llms.txt](https://docs.whatstool.business/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.whatstool.business/contacts-and-crm/frequently-asked-questions.md).

# Frequently asked questions

**Contacts & FAQs**

1. ***What is the file to import the contacts ?***\
   The File format should be CSV while importing the contacts. First column should be the number along with the country code and next column should be variables like Name, Address & Email ID
2. ***can i import contacts through the Xlsx files  ?***\
   No, you cannot use xlsx files for importing the contacts.
3. ***How many contacts i can import through the file ?***\
   You can import unlimited contacts using the CSV files. There is no limit to import the contacts in WhatsApp API
4. ***Can i add the contacts manually ?***\
   Yes, you can add the manually by going to contacts and CRM by enter the name and number!
5. ***Can i assign contacts the labels, status & custom fields in bulk ?***\
   Yes, you can assign up to 500 contacts in one go by applying any advance filter in contacts & CRM