Why not put some poetry in your email, incorporate favorite lines into your voicemail recording, or share your favorite poems through social media?
Social media sites, like Facebook and Twitter, have become a great way for readers and writers to share favorite poems or lines of poetry. Change your Facebook status to a line or stanza of poetry, "tweet" a favorite line on Twitter, or use the share button on Poem-A-Day to share today's featured poem with your friends and networks.
Starting a blog (or updating your blog to include poetry during the month of April) is a great way to celebrate National Poetry Month. A simple template like Blogspot or Tumblr makes it easy to have your own internet home. As a spinoff of National Poetry Month, April is also NaPoWriMo (or National Poetry Writing Month). During April, many writers challenge themselves to write a poem every day in April, and post these poems on blogs or personal websites. Why not start your own NaPoWriMo blog and see if you can meet the challenge? You can even designate your blog to be "invite-only" and share with a select group of friends or fellow writers.
Many email programs allow you to create personalized signatures that are automatically added to the end of every email you send. Many people use this feature to add information about their company or inspirational quotes. Why not add a few lines of verse that you particularly love?