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Flowrite no longer operates as a standalone product. Maestro Labs acquired Flowrite’s email-writing business in January 2025 and merged it into MailMaestro. This review covers what Flowrite offered, why it shut down, and the exact tool that replaced it.
What Is Flowrite?
Flowrite was a Chrome extension that converted short bullet-point instructions into complete, ready-to-send emails inside Gmail, Outlook, and LinkedIn. Aaro Isosaari and Karolus Sariola founded the company in 2020 in Helsinki, Finland.
Flowrite ran on OpenAI’s GPT-3 model at launch, generating three personalized draft options per prompt. Users typed a few keywords, selected a tone, and received a formatted email in seconds instead of writing full sentences. The tool served hundreds of thousands of users across 150+ countries before the acquisition closed.
| Attribute | Value |
|---|---|
| Company | Flow AI (original developer) |
| Founded | 2020, Helsinki, Finland |
| Founders | Aaro Isosaari (CEO), Karolus Sariola (CTO) |
| Status (July 2026) | Discontinued as standalone product |
| Acquired by | Maestro Labs, January 2025 |
| Current form | Merged into MailMaestro |
| Original platform | Chrome extension (Gmail, Outlook, LinkedIn) |
| Core AI model | OpenAI GPT-3 (at launch) |
What Happened to Flowrite?
Maestro Labs acquired Flowrite’s AI email division in January 2025 and folded its technology and user base into MailMaestro. Flowrite.com now redirects visitors directly to a Maestro Labs landing page.
The founding team behind Flowrite did not join Maestro Labs. Isosaari and Sariola redirected their company, Flow AI, toward a different market: evaluating and improving large language model (LLM) systems for AI teams. That product shares no code or features with the original email-writing tool. Legacy Flowrite subscribers can continue using their existing plan, but Maestro Labs ships all new features exclusively inside MailMaestro going forward.
What Features Did Flowrite Offer?
Flowrite built its feature set around one workflow: turn short instructions into a finished email. Before the acquisition, the product included:
- Generate complete emails from bullet-point prompts using GPT-3.
- Select from three personalized draft variations per request.
- Reuse a template gallery covering common role-specific messages (sales follow-ups, meeting requests, customer replies).
- Adjust tone and length before sending.
- Respond to incoming emails and LinkedIn messages with context-aware suggestions.
- Calculate estimated time savings based on actual email volume via the built-in Time-Saving Calculator.
- Integrate directly into Gmail and Outlook through a Chrome browser extension.
Flowrite did not offer inbox triage, thread summarization, or meeting-note generation — features MailMaestro added after the merger.
How Much Did Flowrite Cost?
Flowrite charged a single premium tier, reported at roughly $15/month billed monthly or approximately $12/month billed annually, before the product was discontinued. That pricing is no longer active or purchasable.
Flowrite offered one paid plan with unlimited email generation and a two-week free trial that required no credit card. Since Maestro Labs shut down new signups for the standalone product, current pricing runs through MailMaestro instead. According to Maestro Labs’ official pricing page, MailMaestro offers a free plan at $0/month and a Pro plan starting at $12/seat/month billed annually (or $15/seat/month billed monthly), plus a 14-day free trial with no credit card required. TeamsMaestro, a separate collaboration tier, starts at $17/seat/month.
What Are the Pros and Cons of Flowrite?
Flowrite delivered fast, simple email drafting with a clean interface, but it lacked inbox management features and stopped receiving updates after the 2025 acquisition.
Pros:
- Generated a complete email from a short prompt in seconds.
- Ran a minimal-learning-curve Chrome extension with no separate app to install.
- Supported multiple languages for outreach and customer communication.
- Offered a genuinely free two-week trial with no card requirement.
Cons:
- Covered email only — no inbox triage, thread summarization, or meeting tools.
- Ran on a single paid tier with no lower-cost option beyond the trial.
- Stopped active development in January 2025 following the acquisition.
- No longer accepts new signups as a standalone product.
How Does MailMaestro Compare to Flowrite?
MailMaestro replaced Flowrite entirely and expanded the feature set to cover inbox management, thread summaries, and meeting notes on top of the original email-generation workflow.
| Feature | Flowrite (legacy) | MailMaestro (current) |
|---|---|---|
| Email generation from prompts | Yes | Yes |
| Reply suggestions | Yes | Yes, with full thread context |
| Inbox triage/prioritization | No | Yes |
| Thread and attachment summaries | No | Yes |
| Meeting note assistance | No | Yes |
| Free tier | Trial only (14 days) | Free plan available |
| Starting price | ~$12–15/month | $12/seat/month (annual) |
| Active development | Discontinued | Ongoing |
Readers comparing dedicated inbox tools further should reference our Best AI Email Writers 2026 roundup for a full feature-by-feature breakdown against Superhuman and Grammarly.
Who Should Use MailMaestro Instead of Flowrite?
Anyone who previously relied on Flowrite for Gmail or Outlook drafting should migrate to MailMaestro, since it is the only actively maintained successor with the same core generation workflow.
- Solo professionals and freelancers who send repetitive emails (client updates, follow-ups, invoicing notes) get the same one-click drafting Flowrite offered, plus a free tier Flowrite never had.
- Small teams on Gmail or Outlook gain inbox triage and thread summarization that Flowrite lacked entirely.
- Sales and customer-facing roles handling high email volume benefit from MailMaestro’s context-aware reply suggestions across full conversation threads, not single messages.
- Enterprise teams needing SOC 2 Type II compliance and admin controls should evaluate MailMaestro’s Enterprise tier directly with Maestro Labs.
What Are the Best Alternatives to Flowrite?
Three tools cover the workflows Flowrite specialized in, each with a different focus:
- MailMaestro — the direct, official successor to Flowrite, combining email generation with inbox triage and thread summaries.
- Superhuman AI — a premium email client built for high-volume users who prioritize interface speed over template variety.
- Grammarly — a writing-quality tool that rewrites and polishes existing email drafts rather than generating them from scratch.
For sales-specific outreach, see our dedicated comparison in Best AI Sales Email Tools 2026, which benchmarks Lavender and Woodpecker against MailMaestro for cold-email personalization.
Frequently Asked Questions
Is Flowrite still available in 2026?
No. Flowrite stopped accepting new signups after Maestro Labs acquired the product in January 2025. Flowrite.com redirects to a Maestro Labs landing page, and all new users sign up for MailMaestro instead.
Can I still use my old Flowrite account?
Yes. Maestro Labs confirmed that legacy subscribers retain access to their existing Flowrite plan, but the company ships all new AI features exclusively inside MailMaestro.
Is MailMaestro the same company as Flowrite?
No. MailMaestro is built by Maestro Labs, which acquired Flowrite’s email-writing technology and user base but is a separate company from Flow AI, the original Flowrite developer.
What did the original Flowrite founders build next?
Aaro Isosaari and Karolus Sariola redirected Flow AI toward evaluating and improving large language model systems, a product unrelated to email writing.
The Bottom Line
Flowrite pioneered prompt-to-email generation in 2020, but the standalone product has not accepted new users since Maestro Labs completed its acquisition in January 2025. MailMaestro delivers the same core drafting workflow at a lower entry price — $12/seat/month annually versus Flowrite’s discontinued $15/month tier — with inbox triage and thread summarization added on top.