In order to use Docsify for the Gsuite aliases you need:
1. Create an alias:
- If you use Gsuite account, take a look at this article
- If you use other non-Gsuite providers, such as Outlook, Zoho, Yandex and so on, take a look at this article
2. Add Docsify to your Main account:
- Sign up with the main one
- Once you do this you will be able to use Docsify with all emails connected as aliases to your main account.