Looking for a easy way to express your gratitude to a colleague? Try sending a thank you ecard. Thank you ecards are a wonderful way to show you care. Choose from lots of ecards available online. Whether you are looking for funny or heartwarming thank you ecards you are sure to find some thank you e-cards that meet your needs. The recipient will be pleasantly surprised, especially if the ecard arrives while they are at work and wishing they weren’t!