I have just checked the steam forums and a developer for Block * Load said the following:
Hey,
If you have both validated your e-mail and ticked the box to receive Block * Load updates when you finished your 5th Block * Load match, you should receive the e-mail near instantly, check your Junk folder!
If you hadn't validated and ticked the box to receive Block * Load updates by the time you've played 5 games, you will still receive this as long as you have now done these, however it may take a while longer for the e-mail to come through as the system checks back through accounts periodically to find new users who now meet all the conditions.
If you're not sure if you've validated your email and checked the box, you can check at https://***.blocknload.***/account
- MrCrispy
02-May-2015 17:08:54