Another well received way is to print a mini calendar page with a 3-hole punch so your friends can attach it to their own calendars. Of course, you would have to circle or decorate the day that belongs to you.
Although wedding save-the-date cards are not part of the etiquette for a wedding, it is wise to make use of them. It allows your guests to be able to set aside time for your wedding in advance. Generally, people would like to know about your wedding as soon as they can, especially if they are keen to attend. Also, if travel arrangements need to be made, then it is best to be informed early.
Your save-the-date can take any size or form. If you decide on mailing cards out, then your cards can be the size of a postcard, or even smaller. Make sure the size does not cramp the wordings together.
Rules & Etiquette – Again, few rules apply. The only information you must include is your names and wedding date, although I suggest including location information as well so wedding guests can begin their travel plans. Aim to send save-the-date cards soon after you secure your date and venue, or about 4-6 months prior to your wedding. Remember, everyone who receives a save-the-date also receives an invitation, so have your guest list finalized prior to sending them. You can, however, always add guests later (there is no rule that says everyone must receive a save-the-date card). Although formal replies are not required, you can get preliminary attendance estimates through word-of-mouth.
Who Needs them? If your guest list includes a number of out-of-towners, or if your wedding takes place during a holiday or other peak time, you are a prime candidate for save-the-dates. Since invitations don’t go out until 6-8 weeks before the big day, save-the-dates are the perfect way to give wedding guests a preliminary heads up so they can begin making travel arrangements. These days, however, more and more brides send these cards regardless of the time and location of their wedding. Why? Save-the-dates provide a fun opportunity to get the word out and foreshadow the style of your big event.