What's the best mailing tool with custom data entry ?

Hi all,

I want to send a monthly email to my customers with their usage statistics of my platform.

This means being able to pull data from my back-end, and put it in the email.

I've been looking at Brevo but I don't think it can do it, so I turn to you, product folks

=> do you know a mailing tool where I can create template with custom data points being pulled from my back-end ?

We're early, so the lower the cost, the better !

Cheers,

Lancelot, vocca.ai