Galaxy S4 mail group limits I have a Galaxy S4 that seems to only allow a maximum of 20 contacts in a mail group. Does anyone know how this annoying feature can be changed please?
Are you talking about an artificial limit of the number of contacts you can add to the default Mail app's "group" section? Because this as far as I know can't be circumvented.

I use Gmail (Gmail app recently stopped working so I switched to their newer "Inbox" app.. thanks google.. >_>) and there's no artificial limit on the number of members of a mail group in Gmail.

Like you have suggested though, it's an annoying "feature", it's unlikely it can be changed in the default "email" app.

[I have a SG4 too]

Edit: I'd recommend trying to add the people from your contacts to a general contacts group in the "Contacts" app or "People" app depending on your Android Distribution then choose to email them directly from there. I have one with 52 people I can email using a variety of email clients/apps.