Can you send any type of coin you get to blockchain.info? I have lots of coins from smaller startups
you want dissucion about bitcoin online wallet or altcoin online wallet
if discission about bitcoin online wallet you can visit in web wallet section
if altcoin wallet is i think safe if use official wallet, every altcoin is good quality ussualy open service online wallet too
if dogecoin iam use online wallet my.dogechain.info, same company blockchain,info