offer opt out when receiving emails, requires that we make a distinction between deltachat and email contacts.
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This is a message from someone that does not use Delta Chat.
Do you want to keep showing normal Emails in Delta Chat?
You might want to disable this if you use DeltaChat only
for chatting, but also use another email client
on this email account (like thunderbird, k9-mail or webmail).
[Keep All Email] [Ignore All Email in Delta Chat] [Decide later]
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This way we would ask the user when starting to use the app, but we delay the decision until there is actually some context, so users can better understand the consequences then if we would ask them during the configuration process.
Distinction between normal MUA and Chat MUA
Like the verified contacts, email only contacts should show an envelope (
) icon to indicate that they never used deltachat, the information saved will also be used by core to not send deltachat only stuff (member added / removed, group name changed) to email users, because that could be considered annoying/spammy by email only users. Also we can hide the disappearing messages option for “email only”-contacts (if it is not currently active, you should still be able to turn it off).