How many bank accounts do you own? And for what purposes?

I got too many bank accounts but optimized accordingly:

1) SingLife for emergency funds (2.5% on 10k)
2) DBS Multiplier for salary crediting (main acct cos can't hit $500 cc spend, also warchest to be deployed)
3) POSB Savings with Dad for dividends crediting and his salary last time ($0 balance cos dad is old)
4) SCB JumpStart (2% on $20k)
5) Citi Maxigain with Dad from US Exchange days
6) UOB Krisflyer ($1k min balance to be closed)
7) OCBC Frank from uni days ($0 balance)
8) OCBC 360 ($0 balance to be closed)

And a few more US savings (and associated checking) accounts 😅

Standard Chartered Jumpstart for savings
POSB Savings for transferring money to people
DBS multi currency for vickers
Ocbc Frank for daily expenses
CIMB fastsaver for savings

Using OCBC 360 as main account for salary, cc and growth, also old dbs multiplier and posb joint acct that is maintained at min balance

Minimum to have 3 bank accounts!
1. Spending/Salary crediting acc, you do all your daily expenses, also with proper budgeting to limit expenses
2. Short term Goal acc, where you save up a portion of your money for short getaways, lux food etc
3. Financial freedom acc, this should not be touched as it determines how early you get to choose your own retirement instead of letting retirement come to you.