Yes, this can be verified by going into the donor's interactions page of the Constituent360 record:
  1. Constituent360>Constituents
  2. Enter constituent info and click Find
  3. Click View on the appropriate record
  4. Click Interactions on the list of tabs running across the screen
  5. From the list of interaction types in the Interaction Types window (left), select Tell-a-Friend Sent
  6. Click Filter
  7. From the list of interaction results and under the Subject column, click on "eCard:"
  8. The details of the eCard will be listed along with the original message