Dear Mr. X

As agreed in our last meeting to discuss a increase review of my payment/salary,

I wanted to follow up on our meeting last week regarding my salary. During our conversation, we agreed that my position required a greater compensation given the scope of work and my professional experience. We discussed a possible range of $000 to $000, which is ideal for me moving forward.

I would be happy to revisit the conversation if you have further questions about my request. Again, I truly appreciate your time and consideration.

Warm regards,

Pam Lake

We don´t have to use the "humbly" word in English, and on the subject of benefits, you have to see if there´s a policy of benefits and if you apply. Could be be some kind of help to studies, or training, health assistance, etc. 

If so, you would send the email to the HR department (if the company has one) 

Here some templates related to business communication:

https://www.login-faq.com/contract-negotiation-email-sample/