To think that brother should email from his own account rather than sister in laws??

[Merriboo]

For some reason, my brother sends emails from his wife's home email rather than using his own.
AIBU to think he shouldn't?
I find it odd, and annoying as it give the impression that it's from her, and that she has to be involved, regardless of the subject.
I don't know whether it's sheer lazyness (can't be bothered to log out/in) or what

Yabu. Clearly they have a shared inbox and for whatever reason he's not changing the address - laziness, doesn't know how, whatever. Does it matter? Unless you are wanting to slag her off, which I doubt he'd be too impressed with as they obviously have a secure marriage to have access to each other's email.

To go against the flow YANBU. XH does this. Within a few weeks of walking out leaving me heavily in debt with a 1 and 3 year old I had a whole string of emails from this women I'd never heard of. Turned out to be him. They appear to have multiple email accounts and the account he sends from is very random. It makes it harder to follow strings of conversation.