Sending a congratulatory message essentially can be one that is personal and professional. You can create a greeting card for anyone that you wish to congratulate. Share cards to friends & family with a personal note written by you can be unique for anyone.
There are many greeting cards online free that you can use as a basic template. Customizing it or personalizing it is possible with these free websites. Best wishes can be shared with people whenever they have achieved something special, either professionally or personally.
These websites are also said to offer animated greeting cards online for free. This way, you would only be spending a few minutes of your time to make someone feel that extra special.