Informal Letter Format Birthday Invitation. In an informal invitation letter, the sender informs about the event or the occasion and asks the receiver to attend it kindly. An invitation letter for a birthday party will have a different tone from an invitation letter for visa.
Next just below the address we write the date. Writing a formal invitation letter is actually easier than the informal ones. You are warmly invited to the party.
In fact, it has become unavoidable.
Dear (name of recipient), it is with great pleasure that we will be hosting a dinner party. Dear (name of recipient), it is with great pleasure that we will be hosting a dinner party. If the letter is sent to a friend or a family member, it tends to be informal as the receiver is close to the sender, and the invitation is just a formality. He can then relate better to the contents of the letter.