Re: Subaddressing (RFC 5233) support in James

Hi Benoit,
thank you for confirming my observation. Indeed, it seems quite extensive.

I was wondering if we shouldn't adjust org.apache.james.core.Username API and make a distinction 
between localpart (so username+subaddress) and actuall username (i.e. `username` without subaddress 
part. Or have another way to distinguish username in the system from email address?

Wojtek

On 06/10/2023 21:26, Benoit TELLIER wrote:
> Correct! I've been identifying it for a couple of time and even have ideas of how to manage it ;-)
> 
> That's a bit of a complex story to work with!
> 
> As a starter :
> 
>   - ValidRcptHandler needs to accept sub-addresses of an existing user
>   - IsLocalRecipient needs to accept sub-addresses of an existing user
>   - LocalDelivery needs by default to accept email for sub addresses but delivery them into INBOX
>   - And a SubAddressing mailet would check if the recipient did whitelist the sender for the target mailbox (k right) OR if the mailbox submission right is allowed for everybody (any)
>     If so, then positions a storage directive for this email to go into the target mailbox for that recipient
>   - Of course integration tests (/server/mailets/integration-testing )
> 
> Contributions more than welcome on the topic.
> 
> Sponsoring even more welcome ;-)
> 
> Here is the JIRA: https://issues.apache.org/jira/browse/JAMES-3945 (freshly created)
> 
> 
> 
> 
> -- 
> 
> Best regards,
> 
> Benoit TELLIER
> 
> General manager of Linagora VIETNAM.
> Product owner for Team-Mail product.
> Chairman of the Apache James project.
> 
> Mail: [email protected]
> Tel: (0033) 6 77 26 04 58 (WhatsApp, Signal)
> 
> 
> On Oct 6, 2023 11:25 PM, from Wojtek Hi,
> does James support subaddressing (i.e. RFC 5233)?
> 
> I tested it quickly and from what I see James just treat those addresses as distinct addresses?
> 
> I don't see support for it in code.
> 
> Ref:
> en.wikipedia.org/wiki/Email_address#Sub-addressing
> rfc-editor.org/rfc/rfc5233
>