Indico hints
Emailing people
Go to registration list
Filter people based on who you need
Select all (this selects only the visible people; you can confirm this by looking at the names in the email box, though you can’t see them all our count them)
Actions → Email
Compose your email (warning: it is easy to lose everything, there is no saving)
Preview email to make sure it works
Ensure that it is sent from support@coderefinery.org
If you want a real test, you could register and send the first draft to yourself (make sure you copy the full text first, otherwise you lose the placeholders)
Copy full text before you send the email, otherwise you lose the form fields.
Click send
Don’t worry