Jace wins for everyday inbox work — it learns your writing style from your email history and drafts personalized replies, organizes your inbox with smart labels, and handles calendar scheduling as one part of a broader assistant. Howie wins specifically for scheduling itself — cc it on any email thread and it manages the entire back-and-forth of finding a meeting time, checking availability, and resolving conflicts, functioning like an executive assistant who only needs email access. Both are AI secretaries that live in your inbox, but Jace is a general email co-pilot while Howie is a scheduling specialist.
The two, in one line each
Jace is an AI assistant for drafting email replies, organizing mail, and scheduling meetings — it learns your unique writing style and voice by analyzing your email history, then drafts personalized, tone-matched replies automatically.
Howie is an email-based AI secretary focused specifically on calendar coordination — you cc it on a thread or text it, and it handles the entire scheduling conversation: checking availability, proposing times, and resolving conflicts without you touching a calendar app.
Where each one actually wins
Jace wins as a general-purpose inbox assistant — its core strength is drafting replies that actually sound like you, which matters for the majority of email that isn't about scheduling at all, plus lighter scheduling help as part of that broader job. Howie wins on the one thing it's built entirely around: taking scheduling off your plate completely, including the multi-email back-and-forth of finding a time that works, which is a narrower but deeper capability than Jace's more general approach. Howie is also Google Calendar only with 24/7 human oversight from experienced assistants backing the AI, while Jace is Gmail-only and fully automated — a real difference if reliability on scheduling specifically is what you're optimizing for.
Quick comparison
| Tool | Starting price | Core job | Best fit |
|---|---|---|---|
| Jace | $25/mo (Plus), $50/mo (Pro) | Tone-matched drafting + inbox organization | General everyday email co-pilot |
| Howie | ~$25/mo (Standard), ~$95/mo (Premium) | Scheduling via email, with human oversight | Offloading meeting coordination completely |
Which one should you use?
Choose Jace if the daily pain is writing and organizing email generally — replies, labels, triage — and scheduling is just one part of that. Choose Howie if scheduling specifically is what eats your time, and you want a dedicated assistant (with real human oversight backing the AI) that you can cc on any thread and trust to actually land on a meeting time without you managing the back-and-forth.
FAQ
Can I use both Jace and Howie together? Yes — they solve different problems well enough that using Jace for general inbox drafting and Howie specifically for scheduling threads is a reasonable combination, rather than picking one to do both jobs.
Does Howie only work with Google Calendar? Yes, as of 2026 Howie supports Google Calendar and Zoom for meeting links only — Outlook and other calendar systems aren't supported, which is worth checking before committing if your organization runs on Microsoft's stack.
Is there real human involvement in Howie, or is it fully AI? Howie is AI-powered with 24/7 oversight from experienced assistants who step in as needed, which is part of why it can maintain a natural, reliable scheduling conversation — it's not purely unattended AI.
Is Jace's tone-matching actually accurate, or does it need heavy editing? Reviews describe it as producing clean, human-like replies once it has learned from your email history, though like any AI drafting tool, most users still review before sending rather than trusting it fully unattended from day one.
Related guides
*Ratings and pricing reviewed monthly. Last updated September 2026.*
Bogdex · Founder & editor, woska
Bogdex builds and curates woska, testing AI tools against real workflows to judge which ones actually save time rather than which have the longest feature list.