Free email app with email tracking?

Hiya.

So long story short, I tried the trial of Newton (formerly known as Cloudmagic) and it has a feature that tells you when someone has opened up an email you sent them. Unfortunately I only had this feature for a 14 day trial cus you have to pay for it after that.

I've tried a few apps that claim to have this feature but they didn't work. Does anyone know of a free email app with this feature? Newton gives you an actual notification when someone opens your emails but this isn't 100%...

Free email app with email tracking?

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