Ease & Visibility to an Administrator to identify & summarize the "Optional contribution to Zeffy". Although from my understanding from Support, the workaround for this information is via the Manually resend a receipt to yourself. If this isn't already documented in the Help Center, it might be beneficial for other organizations to be aware of.

More importantly, I think Zeffy should reconsider including the "Optional contribution to Zeffy", as an optional field to include within the Export 'Transaction details' as "Zeffy Donation" for further transparency to an organization Administrator, if desired. As this would make it a lot easier & efficient for us Administrators that wish to include this in our overall monitoring of our organization's usage.