# Migadu

<https://migadu.com/>

## A strategy to handle email addresses

Email addresses can be "vanity" or "non-vanity".
Vanity email addresses are meant to be public and memorable, for example `firstname@lastname.tld`.

Set up any vanity domains that you want, and a non-vanity domain.

### Non-vanity email addresses

In the non-vanity domain, you create the `{me}{code}@nonvanity.tld` mailbox.

`{me}` identifies you, you can have multiple users with different `{me}` identifiers in a single non-vanity domain.

This strategy uses `{code}` to obfuscate email addresses.
When you use `{code}` in an email address, you should be able to identify if the `{code}` is valid or not.

For example, you could use a four-digit `{code}` and store what code you have used for each address.
If you use `x3452` and store this code, when you receive an email that does not match, such as `x3453`, you know the code is incorrect.

Alternatively, you can use hashing so that you do not have to store all codes.

No one except you should know about `{me}{code}@nonvanity.tld`.

Then you create a pattern rewrite from `{me}.*@nonvanity.tld` to `{me}{code}@nonvanity.tld`.

When you need a non-vanity email address, you create a new `{me}.{entity}{code}@nonvanity.tld`, where `{entity}` is the entity that communicates with this email address and `{code}` is a **new** code.

Mails received at `{me}@nonvanity.tld` are incorrect.
Mails received without the correct code are incorrect.

### Vanity email addresses

Create any needed `{id}@vanity.tld` addresses.

Different from non-vanity email addresses, vanity email addresses can be guessed and you cannot identify invalid email.

TODO: set forwarding from `{id}@vanity.tld` to `{me}.{vanityid}{code}@nonvanity.tld`.

### TODO Filing

Because each vanity email address and entity has a different email address, you can file emails automatically into folders if wanted.

## Notes

* Aliases do *not* have plus addressing, use a "pattern rewrite" instead.
* New domains come with 'junk messages with word "SPAM" in subject (case insensitive)' on by default; go to domain, spam filtering, aggresiveness to disable.