If a user was invited to the company account and did not get an invitation email there could be different reasons for it:

• The option Send Invitation for the field On Save was not selected by the user creating the new user account.

• The invitation email was labeled as SPAM.

• The user creating the new user account entered the email address of the new user with typos.

Find more information here:

> Resending invitation emails

> Preventing invitation emails from being labeled SPAM