Sure, there is phone etiquette and email etiquette.  So it only figures that we’d get around to knowing the right etiquette when texting.  Over five billion texts are sent a day.  They’re more casual than a phone call or an email, but you should keep in mind the Do’s and Don’t’s. 

DO use proper grammar and punctuation. It’s true that texting’s the reason we have so many new abbreviations. And with a limited amount of characters to get your point across, it’s natural for periods, commas and question marks to disappear. Still, texts should include appropriate punctuation, spelling and grammar to make reading easier on the recipient.  LOL and OMG aren’t off-limits.  Shorthand language is fine for texts with one caveat: You shouldn’t assume that someone you’re texting for the first time is aware of even the common abbreviations.

DON’T send too many attachments. Although text messages can feature photos, videos and audio, it’s best not to text with more than one attachment or link. That’s because sending large files via text clogs the recipient's inbox, preventing her from receiving other messages and files. Instead, send multiple photos via email. It’s a better viewing experience anyway.

DO text to confirm plans. Meeting friends for dinner after work? Even if you made the plans over email or phone, sending a quick text to confirm is fine. Since a simple “Still on for tonight?” requires a yes or no answer, the conversation is speedy for both you and the recipient. Last-minute change to plans? Then you should definitely call.  You can’t assume your recipient has received or read your text. Texting also isn’t right for casual party invites. An evite is a more appropriate invitation. Even for getting lunch with a colleague, call or invite her in person. But you can get away with texting to meet, say, your sister or best friend because you have a much closer relationship.

Learn other rules here.