Google also provides tools that help with parent communication. Google Voice is a web service that allows you to create a phone number that anyone can call or text message. When parents call the number they can leave a message, when is then transcribed to text and sent to your email. This allows parents to contact you easily while maintaining your privacy. Gmail is also an excellent way to keep in contact with parents. At the beginning of the year, have parents provide you with an email address. Then create a contact list with the emails. Now you can send out messages to parents with one click of a button.
Class websites are an important tool for keeping parents informed. My school uses the free web service Schoolloop for our school website. I put up basic class information and I also post our class agenda online for any students who are absent.
A class blogger is another way to give parents a window on what is happening in the classroom. Each week assign one student to create a short blog post about what they learned that week. This way parents can check in and see what is happening in class from a student's perspective. This also provides accountability for the student whose turn it is to blog that week. Online blogging services for students like Kidblog make this easy.
Finally, and most importantly, don't pass up opportunities to meet with parents face-to-face. Technology can make you more available, but a live meeting makes you more personal.