AI Emaily vs Shortwave on Privacy and Data Handling

If you are weighing ai emaily vs shortwave privacy and data retention, the reassuring news up front is that the single scariest question — does an AI email app read all my mail to train a model on it? — is answered the same way by both. Shortwave's own security page states your data is never used to train third-party LLMs. AI Emaily states no training on user mail and zero-retention terms with its model providers. On the headline fear, this is not a close call between a safe option and a reckless one.

The real differences sit one layer down: which model providers each vendor uses, what they retain, how credentials are encrypted, whether a human approves what the AI does before it acts, and whether there is a record of what it did. Those are the things a careful buyer actually has to check, and they are where the two products diverge.

We build AI Emaily, so read this page knowing our stake in it. The way we have tried to earn the comparison is to state Shortwave's genuine privacy strengths plainly — some of them published and externally audited in a way ours are not — and then say exactly where our model gives a privacy-first buyer more control. Verify every claim below on each vendor's own live page before you rely on it; security pages change.

The privacy verdict, up front#

For a buyer whose priority is control over the AI's relationship with their mail — routing model calls through their own provider key, approving anything before it sends, and reading back an audit log of what the agent did — AI Emaily is the stronger fit, and that is the case this page argues. It also covers Gmail, Outlook and IMAP, so the privacy model applies to the whole inbox rather than the Gmail part of it.

The honest concession is real and it is not small: as of August 2026, Shortwave publishes more external attestation of its posture than we point to publicly. Its security page describes SOC 2 Type II and GDPR compliance available on request, CASA Tier 2 with annual audits, AES256 encryption at rest, and a stated policy that most AI workloads run on open-source models on its own hardware. If a signed third-party audit report is your gate to buy today, that is a genuine Shortwave advantage, and you should check where AI Emaily's certification status stands at [security](/security) rather than take a claim of parity from us.

Neither product is end-to-end encrypted email. Both must read your mail to act on it. If your threat model is 'no vendor should ever be able to read my messages,' an AI email assistant of any kind is the wrong category — see the third option below.

• You want to route AI through your own model key and keep the provider relationship yours: AI Emaily supports BYOK; Shortwave does not publish that option.
• You want a human approval step before the AI sends, plus an audit log: AI Emaily documents both; Shortwave publishes neither.
• Your gate to buy is a signed SOC 2 / CASA report you can read today: Shortwave publishes those; verify AI Emaily's current status at /security.
• You need mail no vendor can read at all: neither tool fits — you want end-to-end encrypted email, not an AI assistant.

AI Emaily vs Shortwave on privacy: at a glance#

Every row below is dated to the day we checked it. Confirm each against the vendor's own current page before you rely on it — both sides revise their security and pricing pages without notice.

How to read any AI email vendor's privacy claims#

A comparison table is only as good as the questions behind it. The useful skill is not memorising these two products — it is running the same short due-diligence pass on any AI email vendor, because the wording that hides a weak answer is consistent across the category. Treat every reassuring sentence as a claim to verify on the vendor's own page, dated, not a promise to accept.

The checklist below is the one we would run on ourselves. It leans on the OWASP Top 10 for LLM Applications, which names risks like prompt injection and excessive agency — the two that matter most when software with model access can also act on your inbox.

• Training: does the page say your mail is never used to train models — and does it distinguish the vendor's own models from third-party LLMs? Shortwave's wording is specifically about third-party LLMs; read that precision, don't assume it covers everything.
• Retention: is there a stated retention term with the model provider, or only silence? 'We don't train on it' and 'the provider deletes it after the request' are different promises.
• Who acts, and when: can the AI send, delete or file without you? A privacy story means little if an agent can act on mail unreviewed — this is OWASP's 'excessive agency' risk in practice.
• Record: is there an audit log you can read back? Without one, 'the AI didn't do that' is unfalsifiable.
• Scopes: what OAuth permissions does it request? Prefer least-privilege (read plus modify) over full-account access you didn't need to grant.
• Attestation: is there a SOC 2 or CASA report, or just prose? Published prose is a commitment; a signed audit is evidence.

Where AI Emaily is stronger on privacy#

Our advantage is control over how the model touches your mail, and it starts with BYOK. You can route AI through your own provider key, so model calls bill to your account under your terms rather than ours; that key is envelope-encrypted and decrypted only inside an isolated worker, never in the browser and never in a log. Shortwave does not publish a bring-your-own-key option, so on its product the model relationship is the vendor's to define, not yours.

The second is that nothing autonomous happens without a checkpoint. Copilot drafts and stages actions for you to approve before anything sends or files; Autopilot exists for people who want it, but it is gated and shipped with undo rather than assumed to be safe. Every autonomous action lands in an audit log you can read back — which is what makes 'the agent didn't send that' a checkable statement instead of a hope. Shortwave's AI reads as assistant-style on its own site — drafting, search, autocomplete — and neither a formal pre-send approval workflow nor a public audit log is described there as of this writing.

The third is how the agent treats the mail itself. Email is handled as untrusted input with an action allowlist, so a message that tries to instruct the agent — the prompt-injection risk at the top of the OWASP LLM list — cannot quietly widen what it is allowed to do. Voice and tone come from a Personal Context brain and per-client profiles you set, not from mining your sent mail, so what the agent knows about you is explicit and reviewable. And because we connect Gmail, Outlook and IMAP, this whole posture covers the entire inbox rather than the Gmail slice of it.

Where Shortwave is genuinely strong — and it's published#

Shortwave's privacy posture is well documented, and conceding that costs us nothing because it is true. Its security page states that data is never used to train third-party LLMs, that the majority of AI workloads run on open-source models on its own hardware, and that beyond Google Cloud it uses only OpenAI, Anthropic and Pinecone. Running most inference on your own hardware is a specific, meaningful reduction in third-party exposure, and it is more than many competitors in this category disclose at all.

The attestations are the sharper point. Shortwave lists SOC 2 Type II and GDPR compliance available on request, CASA Tier 2 with annual security audits, AES256 encryption at rest and TLS 1.2+ in transit, and a stated policy that no employee accesses customer data without explicit permission, with access gated behind hardware-key multi-factor authentication. For a buyer whose procurement process needs a signed report on the desk before an inbox connects, that is exactly the evidence they are asked to collect — and it is a real reason a security-led team might choose it.

If your organisation lives entirely in Google Workspace and your gate is external audit, Shortwave is a strong, purpose-built answer, and its Google-Cloud-hosted model keeps your mail and its AI processing inside the same trust boundary you already accepted when you chose Gmail. That is a coherent privacy argument on its own terms, and it is the one place on this page where the honest answer may not be AI Emaily.

Pricing model: what the packaging tells you#

Packaging shape matters to a privacy decision because a genuinely free product has to make money somewhere, and it is worth understanding how before you hand it your inbox. Neither of these two is ad-supported, but the packaging is still worth reading plainly.

AI Emaily has no permanent free tier. It runs a 7-day free trial on its Pro and Autopilot plans — card required, $0 if you cancel before day seven — and then it is paid. The current tiers and what each includes are published at [pricing](/pricing) and on the [homepage](/); that page, not this post, is the one to check before you commit.

Shortwave is priced per seat. On the pricing page checked for this comparison, its plans ran as Business, Premier and Max with a 14-day free trial, and no standalone always-free plan was listed — even though some older reviews still describe one. If a permanent free tier is part of your plan, confirm it directly with Shortwave before budgeting, because the third-party write-ups and the live page disagree.

Who each is genuinely for#

AI Emaily fits a buyer who wants the model relationship on their terms — BYOK, an approval step before the AI acts, an audit log to read back, and one privacy model across Gmail, Outlook and IMAP rather than a different answer per mailbox. It also fits someone who wants to start conservative, keep everything under Copilot review, and loosen to Autopilot later without switching tools.

Shortwave fits a Google Workspace organisation whose buying gate is external attestation, and whose team is content to keep mail and its AI processing inside Google Cloud. Its published SOC 2 Type II and CASA Tier 2 posture, and its stated use of mostly open-source models on its own hardware, are a strong match for a security review that wants signed evidence over prose.

Neither fits the buyer whose real requirement is that no vendor can read the mail at all. That is not a weakness in either product; it is the boundary of the category, and pretending otherwise on our own site would be exactly the kind of claim this page tells you to distrust.

• Wants BYOK, approval-before-send and an audit log across mixed providers: AI Emaily.
• All-Google org whose gate is a signed SOC 2 / CASA report and Google-Cloud residency: Shortwave.
• Needs mail no vendor can read at all: neither — see the third option below.

A third option, honestly#

If your privacy requirement is absolute — no provider, including the one running the AI, should ever be able to read your messages — then the honest answer is that you do not want an AI email assistant. Both AI Emaily and Shortwave have to read your mail to draft, triage and search it, and so does every other tool in this category. That is a property of the job, not a corner either of us cut.

For that buyer, the right category is end-to-end encrypted email — a provider such as Proton Mail, where mail is encrypted so the provider itself cannot read the body. The trade is explicit: you give up the cross-provider AI agent, because there is little a model can do with content it is designed never to see. We have written an honest AI Emaily vs Proton Mail comparison for privacy-first professionals if that is the line you are drawing.

If your requirement is control and reviewability rather than zero-access — you accept that an assistant reads your mail, but you want to own the model relationship, approve what it does, and audit it afterward — then this page's comparison is the one that applies, and the choice is the trade it has been making throughout: published external attestation inside Google, or BYOK, an approval gate and an audit log across every provider you use.