Yahoo mail is starting automatically
How can I stop it from doing so?
I have tried autoruns MobiWIA - AndRS Studio
https://play.google.com/store/apps/details?id=com.rs.autorun&hl=en
which shows a bunch of "intents" for yahoo mail but I don't know what to do from there.
My phone is rooted.
I can see it looks like I would have to uncheck certain intents but i'm not sure which
boot_completed
– but as well one of several other things, such as "network state changed", "sd card mounted", or even "battery low" – depending on what it registered listeners for. If you're rather looking for an "easy way out", you might instead try Greenify, which can "hibernate" an app when you don't explicitly run it in foreground.