Please make sure that the community is activated and the "Send welcome email" is checked.
Following is the path for Send welcome email checkbox : Setup--> Communities --> All Communities --> Click link "Manage" and --> Administration--> Emails --> Send welcome email Checkbox.
Please make sure that the community is activated and the "Send welcome email" is checked.
Following is the path for Send welcome email checkbox : Setup--> Communities --> All Communities --> Click link "Manage" and --> Administration-->
Emails --> Send welcome email Checkbox.
Thanks,
Vinoth