Take Control of Mail on the iPad, iPhone, and iPod touch

Use Data Detectors

Data Detectors is a subtle yet helpful feature that searches messages for text that might be phone numbers, email addresses, physical addresses, or URLs, and then turns them into usable objects rather than mere text. (The iPhone OS version of Data Detectors is less sophisticated than what's available in Mac OS X 10.6 Snow Leopard, which also recognizes times, dates, names, and flight numbers.) Data Detectors aren't perfect; they may identify a snippet of text as being, for example, a phone number or address when it isn't. But to the extent that these guesses are right, they can save you time and effort.

Data Detectors work only on messages you've already received or sent, not on a new message you're composing, even if it is stored ...