Replai
Replai is an AI email assistant that studies replies you have already written, then drafts new ones in your own voice. A free generator works without an account, and connecting Gmail, Outlook or IMAP stays entirely optional.
What is Replai?
Replai is an AI email assistant built on a single premise: a generated reply is only worth sending if it sounds like the person sending it. Rather than running a general model on a generic prompt, it asks for three to ten replies you have already written and derives a reply identity from them - your typical sentence length, your habitual greeting and sign-off, and three scores the product labels Formality, Warmth and Directness. Every later draft is shaped by that profile.
The entry point costs nothing and needs no account. Paste an email you have received into the free reply generator, choose an intent such as decline, accept, follow up or clarify, pick a tone, and a draft comes back in seconds, capped at ten a day. Six further free tools sit beside it: meeting notes, an inbox organiser, scheduling assistance, a subject-line generator, a tone checker and a follow-up writer.
The Pro plan adds an optional mailbox connection. Read-only OAuth access to Gmail or Outlook lets Replai file incoming mail as Priority, Needs Reply, FYI or Unsubscribe, apply Gmail labels and Outlook categories automatically, deposit finished drafts in your Drafts folder, and read your Sent folder to sharpen the style profile. Any IMAP server works as well - Yahoo, Fastmail, ProtonMail Bridge, iCloud, Zoho or your own domain - where Replai creates seven category folders and copies messages into them without moving the originals. The meeting notetaker transcribes calls with speaker diarisation and returns a summary, the decisions reached and action items with owners.
Two limits are stated flatly and often. Replai cannot send email: it hands you a draft to read, edit and send yourself, and the site says that will not change. And text you submit is never used to train a model, at Replai or at OpenAI, whose API does the generating.
It is a web tool only, with no browser extension, no mobile app and no public API. The homepage counter stood at 73,575 emails read and replied to on 23 August 2026.
What it does
- Draft a reply to any email you paste in, matched to your own writing style
- Build a reply identity from three to ten emails you have already sent
- Sort an inbox into Priority, Needs Reply, FYI and Unsubscribe, with labels applied automatically
- Turn a meeting recording or transcript into a summary, decisions and owned action items
- Write a full email from a handful of bullet points
- Propose meeting times from your calendar and draft the scheduling message
- Generate subject lines, check the tone of a draft, and write follow-ups
When to use Replai / When not to
A quick filter to help you decide if Replai is the right fit.
When to use Replai
- Founders and managers who field 40 to 50 emails a day and lose an hour writing replies
- Account managers, client-services and customer-success staff whose tone is part of the job
- Freelancers and consultants juggling several clients from a single inbox
- Remote and async-first teams where slow replies stall work across time zones
- Anyone with a backlog of unread mail who wants help drafting without handing over the whole mailbox
When not to use Replai
- People who want an agent to run the inbox end to end, join meetings and book appointments for them
- Anyone needing the assistant to send mail automatically, since Replai has no send capability at all
- Lawyers, clinicians and financial advisers handling privileged, medical or account-level content, which the site tells you not to paste
- Teams wanting bulk, scripted or programmatic generation, which the fair-use terms forbid on every plan
- Under-13s, and 13- to 17-year-olds without a parent or guardian's consent
How to use Replai
A typical end-to-end flow, from setup to results.
- Open the free reply generator, paste an email you have received and pick an intent and a tone - no account required
- Read the draft that comes back, edit it if needed, and copy it into your own mail client
- Create a free account when you want the style matching, using just a name and an email address, in about thirty seconds
- Paste three to five replies you have already sent, taken from your Sent folder; formatting does not matter
- Let Replai score the examples on the spot and build your reply identity, with no settings to configure
- Generate further replies with the identity switched on, and add or delete examples as the match improves
- Optionally connect Gmail or Outlook in one click, or enter IMAP host, port, username and password under Settings, Integrations, Custom Email Server
- Run Test on the IMAP connection, then click Sort inbox to have the assistant read and file your messages
- Set the automatic sync interval so the inbox is re-sorted without you clicking anything
- Upgrade to Pro when the daily cap starts to bite, or contact the vendor for team seats and shared identities
Pros & Cons
Pros
- The free tier is genuinely usable without an account, a card or any mailbox connection
- Personalisation runs on examples you choose to hand over rather than on a sweep of your whole inbox
- Nothing is ever sent for you: every draft waits for you to read, edit and send it
- The vendor states clearly that submitted text is never used to train any model, its own or a third party's
- Entry pricing is low against the alternatives the site itself lists, at 6 US dollars a month on annual billing
- IMAP support extends the tool well beyond Gmail and Outlook, to almost any provider
- No advertising cookies, no third-party analytics and no cross-site tracking
Cons
- The site contradicts itself on mailbox access: several pages still insist there is none while others describe an OAuth connection and Sent-folder reading
- No postal address, no full legal entity name and no named director appear anywhere on the site
- The country hosting user data is never disclosed; the privacy policy says only 'our production server'
- No data processing agreement is mentioned, and no formally labelled subprocessor list is published
- Replai holds no security certification of its own; the only one cited, PCI DSS Level 1, belongs to Stripe
- Free-tier quotas disagree between pages, given as ten replies a day on the pricing page and ten a month in the terms
- There is no public API, no browser extension and no mobile app, and the interface exists in English only
Pricing & Plans
Replai operates a permanent free plan that requires neither an account nor a payment card for its public tools. The lowest paid entry point is the Pro plan at USD 6.00 per month when billed annually, invoiced as USD 72.00 per year; the same plan costs USD 8.00 per month without annual commitment. Team pricing is quoted on request. Payment is handled by Stripe, and subscriptions may be cancelled at any time, taking effect at the end of the period already paid for.
- USD 0
- no account required for the public tools
- USD 6 per month billed annually (USD 72 per year)
- or USD 8 per month billed monthly
- custom pricing on quotation
- with shared seats
- shared reply identities and admin controls
Data, GDPR & hosting
A consolidated view of how Replai handles your data.
GDPR overview
GDPR coverage is concrete rather than decorative. The security page answers the compliance question with a plain yes, and the privacy policy names Replai as the data controller for a service operated from the United Kingdom, citing UK GDPR and EU GDPR together. Legal bases are stated: performance of a contract, legitimate interests, or explicit consent. All seven data-subject rights are set out one by one, each with a route to exercise it through privacy@replai.so and a thirty-day response commitment. Breach notification to the user and to the ICO within 72 hours is promised, and material policy changes are announced by email fourteen days ahead. The current policy dates from June 2026. No Article 27 EU representative is named anywhere, and the only supervisory authority cited is the British ICO.
Who owns the data?
The terms are explicit that you keep ownership of the reply examples you submit; Replai claims no rights over your writing. Submitting an example grants Replai a limited, non-exclusive, non-transferable licence to store, process and analyse that text for one purpose only, generating your own replies, and the licence ends when you delete the example or the account. Replai owns the platform, the tools and the numeric style profile derived from your text, but not the raw text itself. It claims no copyright in generated output. Examples are never shared with other users, never sold, and never used to train models.
Reuse rights
You may reuse anything Replai produces without asking. The terms hand generated replies to you for your own use and state that Replai claims no copyright in that output, so drafts can be edited, sent and kept freely. Two limits apply. Reselling or sublicensing the generated output as a service is prohibited, as is using it to build, train or supplement a competing AI product. The terms also warn that AI output can reproduce patterns from training data, so you should review a draft before using it anywhere intellectual property rights matter. Your own submitted examples remain yours throughout and can be exported in plain text on request.
Data retention & training
Hosting summary
Replai does not disclose where user data is physically hosted. The privacy policy places account records, saved reply examples and usage logs in a MySQL database on what it calls simply 'our production server', naming no country, region or cloud provider. The only jurisdictional signals are legal rather than technical: the service is operated from the United Kingdom, the terms are governed by the law of England and Wales, and the supervisory authority cited is the British ICO. Protection measures are described in more detail than location. Traffic runs over HTTPS with TLS 1.2 or above, data at rest is encrypted at the storage layer, passwords are hashed with PBKDF2-SHA256, session cookies are signed server-side, and production access is restricted on a least-privilege basis. Generation text is transmitted to the OpenAI API, payments run through Stripe, and stored IMAP credentials are encrypted with a key derived from the account. No hosting country and no hosting region could therefore be recorded.
Things to keep in mind
Risks and trade-offs to weigh before adopting Replai.
- The site's own pages disagree on whether Replai reads your mailbox: check the terms and the pricing page, not the homepage, before granting OAuth access
- Leaning on drafted replies can erode your own writing habits over time, and the tool is explicitly not a substitute for judgement on sensitive messages
- Sending a draft unread is the vendor's stated liability line: errors, wrong tone and invented detail become your responsibility the moment you press send
- The publisher is unidentifiable - no legal name, no address, no named officer - which limits any recourse and complicates a vendor risk assessment
- Where your data physically sits is undisclosed, so no jurisdiction can be verified despite the UK-facing legal wording
- Pasting client or employer material into the tool may breach confidentiality obligations you owe, and the terms place that judgement entirely on you
- Meeting transcripts carry recording-consent duties that vary by country and US state, and the vendor accepts no liability for transcripts submitted unlawfully
Setup & Integrations
Technical difficulty
Very low by either route. The free generator needs no installation, no account and no configuration: open it, paste an email, read the draft. Creating an account takes around thirty seconds and asks only for a name and an email address, with the style profile computed automatically from pasted examples and nothing to tune. Connecting Gmail or Outlook is a single OAuth click. Only the IMAP route requires any technical input, since you must supply host, port, username and password yourself, though the site lists the usual server settings. There is nothing to install at any stage.
Deployment
Integrations
Supported languages
Behind Replai
Social
Resources
All the official URLs gathered for verification and reference.
Alternatives
Tools that compete with or complement Replai.
Frequently asked questions
Do I need an account to try Replai?
Does Replai need access to my mailbox?
Can Replai send emails on my behalf?
Is my text used to train AI models?
How much does the paid plan cost?
How many examples does the style matching need?
Is there a mobile app or a browser extension?
What is the minimum age to use Replai?
Which email providers work besides Gmail and Outlook?
Can I delete my data?
Should you pick Replai?
Replai answers a narrow, real problem well: generic AI replies read as generic, and most tools fix that by asking for the whole inbox. Replai asks instead for a handful of emails you have already written, builds a style profile from them, and shapes every draft around it. The free generator is unusually honest about being free - no account, no card, no expiry - and at 6 US dollars a month on annual billing the paid plan undercuts most of the alternatives the site itself lists. The refusal to send mail automatically, and the flat statement that submitted text never trains a model, are real commitments rather than marketing texture.
The reservations are about the vendor, not the product. Nobody behind Replai is named, no legal entity or postal address is published, and the country where user data sits is never disclosed. There is no DPA, no certification of its own, and no formal subprocessor list. For an individual professional that may not matter; for a procurement review it will. The site also has not caught up with its own roadmap: several pages still promise that Replai never touches your mailbox, while others describe the OAuth connection, the automatic labelling and the Sent-folder reading that the Pro plan now performs. Free-tier quotas and sync intervals likewise disagree between pages.
Treat the published figures as vendor estimates from a beta, and read the terms rather than the homepage on what the tool actually accesses. Within those limits, Replai is a cheap, low-commitment way to make AI drafts sound like you, and the free tier costs nothing to evaluate.
- Choosing a selection results in a full page refresh.
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