Emails?

Another social resource i though about was emails.

Some positives about emails are:

1. My parents both has emails and check them regularly 
2. Its free
3. You can easily attach things like photos and videos, so i would be able to show my parents things visually if needed. 
4. They are on smart phones so can be viewed at all times 
5. Easy to use 

Some negatives include:

1. You cant call on emails, only type, which can take a lot longer than speaking verbally
2. when emails come though as a noise of vibration on the phone it doesn't tell you who it is, so my parents could easily ignore my email thinking it was someone else when i may be needing to speak to them urgently. 
3. Emails can sometimes be slow!