Can you help with the use of may or can in this sentence. Thanks
If you still would like to help us with this repair, you [may or can] send her a check made out to Grace Church and memo it to the Capital Campaign Fund.
Best: Neither you may or you can are necessary or help. Don't use either.
Conversationally, both are fine. If you want to be absolutely precise, may in this context means have permission to, and can in this context means have the ability to.
[I edit copy and have tutored college writing.]