Multiple kindle emails per calibre-web account

[ocangelo]

Is your feature request related to a problem? Please describe.
Family uses multiple kindles, would be nice to be able to manage them with a single account in calibre-web without having to switch all the time

Describe the solution you'd like
have a drop down when you click the send button listing:

• all registered kindle emails
• a send to all button
• a send to email button (to send to a generic email)

Describe alternatives you've considered
sending to an email alias that has rules/filter to forward all emails to all kindle emails...

Additional context
nothing

[OzzieIsaacs]

There is an PR addressing this: #2479

[ocangelo]

There is an PR addressing this: #2479

Doesn't look like there was any progress on that merge for years?

Also looking at the code that sends to the entire list of emails all the time, I'm suggesting a drop down to pick which one you want to send to, plus a generic "send to an emai" for the ones that are not registered in the list for your account