email invitations should sanitize for upper & lower case #129
Description
for email invitations, currently jenny_yu2@brown.edu and Jenny_Yu2@Brown.edu would be counted as 2 different invites - should sanitize to always take lower case
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for email invitations, currently jenny_yu2@brown.edu and Jenny_Yu2@Brown.edu would be counted as 2 different invites - should sanitize to always take lower case