Professional is a register, not a vocabulary
Most people think sounding professional means longer words and stiffer sentences. It usually means the opposite: clear, calm, and appropriately formal — confident without being curt, warm without being casual. The hard part is hitting that register consistently, especially when you are annoyed, rushed, or out of your depth.
Persona engineers how the message lands, not just whether the grammar is correct. It rewrites your rough draft so the formality, warmth, and authority are calibrated for the person reading it — a board member, a new client, or a colleague you need to push back on.
Control the formality dial — up or down
Stiff and unprofessional are both failure modes. Persona gives you a formality dial alongside seven other behavioral settings (assertiveness, warmth, urgency, brevity, and more), so you can land precisely between "Hey!" and "Dear Sir or Madam."
- Turn formality up for a first email to an executive, a legal counterpart, or a senior stakeholder.
- Turn it down for a teammate, so a professional note does not read as cold or passive-aggressive.
- Add warmth to keep authority from tipping into bluntness.
- Raise assertiveness when you need to hold a line without sounding defensive.
The emails people get wrong most
The messages where tone matters most are the ones people dread writing. Persona is built for exactly these:
- Declining a request or invitation while keeping the relationship intact.
- Following up on a non-reply without sounding needy or nagging.
- Pushing back on a decision, deadline, or scope creep — firmly and respectfully.
- Delivering bad news or an apology that owns the issue without grovelling.
- Writing up the chain as an executive or to executives, where every word is read closely.
Reads the thread, writes in your voice
Persona reads the Gmail thread you are replying to, so the draft matches the conversation's formality and picks up on what was actually said. With My Voice, it learns from emails you have already written, so "professional" still sounds like you — not a generic template.
For anyone writing in a second language, this is the difference between technically correct and genuinely natural. If English is not your first language, the register and idioms are the hardest part — Persona handles both.
Private by design
Professional emails carry sensitive details. Names, email addresses, and phone numbers are stripped before anything leaves your browser, so the underlying model never sees who you are writing to or about. See how it works on our privacy page.