In starting phase of internet it is very hard to send any message and information to each other. but Gmail comes into existence and make our life very easier and can be easily exchange any information and message in one click. Gmail has a very easy and simple user interface, by which you can easily use without any assistance. it works good in slower data connection .
Security
It has 2 step verification, if you want to open the account so you need the OTP(One Time password), which send on your Registered Mobile Number. without that OTP, no one can access your emails, so it is the additional security for your Account.
One Account for all Services of Google
Google gives us to access all google services(like Drive, g+, docs, Youtube, Map, Analytics) by only one account. you don’t need to create the separate account for all applications.
Good Speed for slow data connection
Gmail gives very good speed of email exchange, that will work also in slow data connection. there is one option to Load Basic HTML mode for slow connection, by which you can access you all emails very easily