What is a good email encryption solution for iPhone?

What is a good email encryption solution for iPhone so you can easily encrypt and decrypt emails you are sending and receiving?

Office 365 and RMS protection.

IPGMail is an iPhone/iPad app for sending and decrypting PGP encoded messages.
PGP = (Pretty Good Privacy) email encryption Recommended by Edward Snowden
It's available in the apps store

  • Why does the FBI have such a hard time cracking iPhone encryption. Why don't they just use the spy agencie's methods of using spyware? All you need is their phone number, and a cheap piece of software and you have access to everything on the phone (including deleted info) Why make a huge scene about it, when there are much easier ways to bypass lock screen encryption? You don't even need access to the phone, it can remotely install with just one phone call to the number too… Just saying, if the FBI really wanted in, it would be very easy
  • IPhone Wi-Fi is slow and I think I know why but i have no solution? I went on my computer and went to my router's home page. I went into connected devices and deleted my phone from it. Now it's slower than ever! I use the fastest Comcast internet available and before my phone was faster than light. Other phones connect and have amazing internet. I connect to other networks in other places and works awesomely. My phone now won't even load anything.
  • IPhone stuck on apple logo after jailbreak can't even DFU restore, ANY SOLUTION? It was ios 7.03, and I used Endevi0r7, and I was never jailbreaked before this, so SHSH either. IPhone stuck on apple logo after jailbreak can't even DFU mode restore with Itune, ANY SOLUTION? Has the Jailbreak team ever come up with anything for a situation like this after jailbreak for iso 4, 5 6 came out?
  • Iphone software problem needing solution? I've recently just got the iPhone 5s in March, I had the 4s before for 2 years in 2012. But I noticed ever since I installed iOS 7 that my phone just keeps turning off. And I have to reset it by holding the lock button and the home button to get it to turn back on. Why does it do this? It happens every so often, it'll be fine one minute then when I press the home button to go on it. It's off:/