'evening 
I volunteered for the task to revamp my local community club's membership spreadsheet, easy enough, created 26 tabs/worksheets for a to z and populated them with the relevant details. however, what I'd like to now do (and obviously can't) is for every worksheet to automatically update a 'data' worksheet which simply contains a list of every email address from each worksheet - for mailing list purposes - however I thought I knew what I was doing, clearly I don't.
Anyone care to steer me in the right direction? autofill, concatenate etc..?
whats the correct formula, or do I need to write a macro
Thanks in advance (and no I won't settle for just pooing in each person's mailbox)

I volunteered for the task to revamp my local community club's membership spreadsheet, easy enough, created 26 tabs/worksheets for a to z and populated them with the relevant details. however, what I'd like to now do (and obviously can't) is for every worksheet to automatically update a 'data' worksheet which simply contains a list of every email address from each worksheet - for mailing list purposes - however I thought I knew what I was doing, clearly I don't.
Anyone care to steer me in the right direction? autofill, concatenate etc..?
whats the correct formula, or do I need to write a macro

Thanks in advance (and no I won't settle for just pooing in each person's mailbox)