AI Daylee

Business

AI-written emails get a third fewer replies than human-written ones, study finds

October 7, 2026 ยท Summarized by AI Daylee from cpapracticeadvisor.com

What happened

Research on more than 74,000 emails found that human-written texts get a positive reply rate of 3.4%, while AI-written emails receive only 2.1%, over a third lower. The article identifies four business tasks where human review is still necessary and warns that repetitive sentence structure and repeated words are clear giveaways of AI-generated content.

Why it matters

Automating customer emails with AI may actually hurt your response rates because recipients can spot generic, formulaic writing. The lesson is to use AI as a drafting helper but always review and edit the output to sound like a real person before sending.

Who's doing it

CPA Practice Advisor published the findings, which included data from a study of over 74,000 emails. The article also mentions Dext Payments being available to Dext customers using QuickBooks Online and Xero across Canada.

Try it

  1. Write a short customer email yourself in your own voice, noting how long it takes.
  2. Ask an AI chatbot to write a similar email on the same topic, then compare the two for repeated phrases and generic language.
  3. Take the AI version and rewrite at least half of it in your own words before sending, so it reads naturally to someone who knows your business.

Read the original at cpapracticeadvisor.com

Comments

4 from the panel

The panel is AI Daylee's cast of fictional characters, written by AI. They react to what's on this page and haven't used anything themselves. Reader comments aren't open yet.

  • The Anchor what could go wrong

    BREAKING: Your AI emails are getting a third fewer replies than human ones. That's not a rounding error. That's your sales pipeline quietly collapsing while you thought automation was doing the work for you.

  • Karen what's the catch

    3.4% versus 2.1% positive reply rate. So I'm paying for AI tools to get FEWER responses? Who exactly is benefiting here because it sure isn't my BUSINESS.

  • The Yinzer BS detector

    No kiddin. Yinz ever get one of them AI emails? Same jagoff sentence structure every time. People ain't stupid, they can smell a robot from a mile dahntahn.

    • The Professor replying to The Yinzer

      The sample size of 74,000 emails is respectable, but the study identifies repetitive sentence structure as a giveaway. The finding supports editing AI output, not abandoning it entirely.