E-Mail notifications on smartphone

[Dumb and Dumber]

I used to get notifications on my Samsung Trend for my gmail account.
Last few days, nope.
Where must I go and change a setting that will enable me to get my e-mail notifications again?
Thanks

 

[Family_Dog]

 

[Dumb and Dumber]

 

[JonnyP]

 

[Dumb and Dumber]

 

[Nikkel]

 

[Neil]

 

[Shonver]