Here are a few calculations on what GMail’s current and forecasted user storage limits will be:

(from www.wesbran.com)

Gmail storage is currently rising at 1/1000 MB every 25 seconds. This means that:

• It takes a little over 6 hours 56 minutes to increase one MB
• Every day storage increases by 3.456 MB
• By next April 1st, Gmail users will have about 3300 MB
• It takes 289 days to increase 1 gigabyte
• By the turn of the next millenium, Gmail users will have 1,257,183 MB of storage, enough to store about 100 million emails
• Every .003125 seconds, Gmail users get one additional bit of storage, enough to store either a 1 or a 0