Yesterday, 1st of April, GMail had a temporary vowel outage. A serious matter indeed as it has affected a whole generation of non-English speakers who will now believe that vowels can be dispensed with just like the guys at IPL who believe that the cricket can be dispensed with. The matter is explained by the Gmail team here:
Having 80.8% of the alphabet available is significantly below the 99.9% full letter uptime reliability we strive for. Since identifying the root case of this issue, we’ve started bringing vowels back to Gmail, so you should see them back in your account within the next few hours if you don’t already. In the meantime, while you may still see this issue in Gmail’s web interface, both IMAP and POP access are functioning normally. We’ll post an update as soon as things are fully resolved and, again, we’re v3ry s0rry.