Can you recommend an email app for iphone with email tracking, reminders, and templates all in one?

I am using Polymail but I can only add templates on a MAC, which I don't have. Any app similar to this but affordable?

2 recommended

Polymail iOS

Simple, beautiful, powerful email for iOS

Pretty sure they just launched paid plans with templates, reminders, & tracking
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Newton by CloudMagic

Supercharged emailing with space-age features

Justin MitchellDesigning Products at · Written
No templates but hands down the best tracking and reminders I've ever seen in a mail app.
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