I would disagree, a sensible limit that cannot overwhelm the machine even if a multi threaded server is processing its maximum number of emails, should be enforced.
The correct response to a breach of this limit would be for a reply email to explain the limit and why the email was rejected.
The user then could send multiple emails with their attachments, and the system can be sized to handle e.g. 24 threads processing 64 attachments of a maximum size of e.g. 4096kb
That's how you ensure a system sized to your hardware and ensure maximum throughput for all users.
iPads have found many niche uses, e.g. in retail, and for people on the road who use only a few apps (e.g. sales or health professionals)
iPads are also great educational tools where kids can interact with the device but don't have to contend with a full blown OS.
It's interesting also that the iPad is kinda growing up to be more of a full blown device for more content creation, since the hardware is clearly more than up to the task, the OS can be kept fairly simple and secure - clearly Apple are responding to what customers have been asking for, and what they're asking for is more iPad.
>anyway, i find windows 10 to be the superior os.
Why would you compare iOS to Windows 10?
The better comparison would be Mac OS X (Microsoft I noticed couldn't wait to get to 10, won't be long before they're calling it windows X I'm sure :))
I find Mac OS X to be the superior OS to Windows, since for yeeears I can run fantastic Mac apps and build and run fantastic Unix apps all on the same fantastic hardware.