Birthday eCards for everyone on your list
There are very few people who don't have an email address these days. And email addresses are much more easy to keep track of than mailing addresses. For the person who is well connected and has everyone's email addresses at their fingertips, sending birthday eCards is a must.
If on the off-chance that you send an eCard to an email address that is not working anymore you'll find out almost immediately. Whereas when you send a card to a mailing address that is not correct, it could take weeks for that card to find it's way back to you and you've missed your opportunity to send your birthday wishes. Don't take that chance. Send birthday eCards to everyone on your list this year.
Best Wishes.
Penelope