Enable personalised invites

[DinerIsmail]

Currently the invite process is quite generic, and the invited person receives a generic email being invited to the platform.

As someone managing a web, I'd like to have the ability of adding a personalised text that will be shown at the top of the email text. That allows me to give a bit of context to the invitation, and mention when I know the invited user personally.

[jonathonhawkins92]

This might come in handy: https://react.email/