does anyone else add "sent from my iPhone" to emails you write at your desk

i'm about to share something i've been doing for 4 years that has genuinely improved my response rates and i need to know if i'm alone in this or if this is common knowledge that nobody talks about.

i add "sent from my iPhone" to the bottom of every email i send. it started by accident bc i replied to a prospect from my phone once and the response time was insane like 4 minutes. this prospect had been ghosting my desktop emails for 2 weeks. i looked at the only difference and it was "sent from my iPhone." so i tested it. i added the signature to my outlook on desktop and response rates went up like almost immediately.

i think it works bc when a prospect sees it, their brain does a few things: 1) they think you're busy and important because you're responding on the go; 2) they forgive any typos or short responses because you're on a phone; 3) they feel like they're getting a casual personal reply instead of a crafted sales email; and 4) it lowers the formality barrier instantly.

i've leaned into it hard like i intentionally leave small typos in my emails now. i keep them shorter than i normally would or sometimes i'll even start with "hey quick thought" like i'm firing it off between meetings (i am not between meetings) but the prospect doesn't know that and maybe thinks i'm a high-powered sales exec who cared enough to thumb out a reply from the back of an uber.

the most unhinged part is i sent a 2,000 word proposal last month with full formatting, embedded images, a table of contents, and a custom pricing matrix. "sent from my iPhone." nobody questioned it and they just responded faster than they ever have.

i told my sales manager about it and he said its manipulative but its ironic that he now does it too and like his response rates are up 30%. am i a genius or a sociopath because at this point i genuinely can't tell