More Acknowledgment Details

When do I have to send the acknowledgment to the donor?

Coach has the answer. [21a]

Can I send the donor an email acknowledgement? [21b]

Pop-Ups
21a:
Coach says:
Generally, organizations send acknowledgments to donors no later than January 31 of the year following the donation. That’s because donors must receive the acknowledgment by the earlier of 1) the date on which the donor files his or her individual federal tax returns for the year of the contribution; or 2) the due date of the return (including extensions).

21b:
Coach says:
Yes. An organization can either provide a paper copy of the acknowledgment, or it can provide the acknowledgment electronically, such as via an email addressed to the donor.