¿"APROVECHO PARA DECIRTE" EN INGLÉS?

After reading a lot of emails in Spanish it is clear to me that the phrase "aprovecho para decirte" is commonly used as a way of adding something to your original email that is not exactly connected to the main issue:
Aprovecho para decirte que...
​So, how would you say this in an email in English?

Well, the first thing that probably comes to your mind is:

• to take advantage of
  
  

Which technically is correct but it doesn't work very well in an email:

• Taking advantage, I just wanted to ask you…
  
  

This approach is just a little too literal and relatively unnatural.

A better version would be:

• Seeing as I am writing to you I just wanted to ask...
• As a side note, I just wanted to ask you...
• By the way, I just wanted to ask you…
  
  

Super useful one… in my humble opinion :)

I hope that helps!