Mailjet vs Sendinblue

Hi there,

I'm looking for a way to mainly send welcome emails to users of a Chrome extension. Since the extension is free I'd like to keep volume down has installs increase. Mailjet and Sendinblue have the best pricing I've seen (if anyone else has any other recommendations, I'm also open suggestions)

Has anyone used these two platforms and do you have any feedback?

Again, not really looking for anything fancy...basically a welcome email and a way to communicate to users in the case of an outage. Thanks!