E-mail is a time-tested protocol that needs no introduction. A personal mail server will provide special privacy for all correspondence and is useful for registering in online services and personal correspondence, especially for [Delta.Chat]({{< ref "delta-chat.md" >}}).
Use aliases for questionable services or one-time needs.
Messages for `user+alias@domain.com` will go to `user@domain.com`. It can be useful for spam origin analysis if a unique alias is used for each online service when registering.
For example, `bank+user@domain.com`, `cryptoexchenge+user@domain.com`, and so on.
#### Directory Filter
Create directories of filters for different purposes. This will help protect against phishing and clogging your inbox.
The message for `user-dir@domain.com` will create a `dir` directory in the `user@domain.com` mailbox and all mail will arrive in the `dir` directory.
Examples:
-`user-w@domain.com` - for registering with web services
Hetzner [responds](https://docs.hetzner.com/cloud/servers/faq/#why-can-i-not-send-any-mails-from-my-server) that they indeed block the sending of emails for new accounts. After a month of server operation and the first successful payment, Hetzner asks to contact support to clarify the reasons for using email. You can refer to using email to communicate with users of your services.
With DigitalOcean, such a problem has not been observed, but if you have encountered this, try to get in touch with the hosting support.