Epistles Mail

Epistles Mail is a local-first email client for managing accounts from major providers and IMAP servers across desktop, mobile, web and wearables. It is best suited to privacy-conscious users who need offline access and broad device coverage, provided two accounts are enough on the free tier. Pro is the practical choice for larger account collections, while the free plan is a useful way to assess the workflow.

Overview

Epistles combines supported mailboxes in a unified inbox, with scheduled sending and calendar tools alongside email. Mail content, attachments, drafts and the search index remain on the device, and search operates against a local cache. That design makes offline work and fast local retrieval central strengths rather than optional extras.

Epistles servers do not store mailbox content. Its local-first, zero-knowledge encryption model sends only ciphertext to Cloud Vault, and the product has passed a CASA Tier 2 security assessment by TAC Security. The trade-off is that the device becomes the primary home for mail data, so users should be comfortable managing that local copy.

Provider support covers Gmail, Microsoft 365, Fastmail, JMAP servers, iCloud, Proton and IMAP. iCloud connections also handle calendars and contacts, making Epistles more useful as a general communications hub than a mail-only client.

Key features

Local-first mail and search

On-device storage covers messages, attachments, drafts and search data. This supports offline access and keeps mailbox content away from Epistles' servers, a meaningful advantage for users who prioritize data locality. It also means device storage and device security matter more than they would with a purely server-hosted mailbox experience.

Cross-device coverage

The client runs on macOS, Windows, Linux, iOS, Android and the web, with Apple Watch and Wear OS apps as well. Watch triage includes archive, snooze, pin, template replies and RSVP, giving users useful actions without opening a phone or computer.

Account and sending tools

A unified inbox helps people who divide mail among personal, work and specialist providers. Scheduled sending is suited to time-zone and workflow management. Pro adds password-protected, expiring email, which is the clearest reason to upgrade beyond account-count relief.

Pricing

Free

The Free plan costs nothing, billed free forever, and permits up to two connected accounts. It is a sensible fit for a single personal mailbox plus one secondary account, but users with several work, personal or archive inboxes will reach the cap quickly.

Pro

Pro costs $35 a year after a 14-day free trial. It allows unlimited connected accounts and includes password-protected, expiring email. One flat price applies rather than per-seat billing, so households and small teams with multiple accounts avoid multiplying a seat charge. The annual commitment is straightforward, but readers should compare it with their willingness to keep all mail locally available across devices.

Founding offer

It may appeal to early supporters who prefer a lifetime-style purchase, but the missing amount prevents a meaningful value comparison with Pro.

Platforms

Epistles covers Android, iOS, Linux, macOS, Windows and the web, plus Apple Watch and Wear OS. That breadth is unusually useful for readers who switch between operating systems or want watch-based triage. App coverage is described as all, so the same service can follow a mixed-device setup rather than forcing a desktop-only or mobile-only choice.

Who it's for

Choose Epistles if you want Gmail, Microsoft 365, Fastmail, JMAP, iCloud, Proton or IMAP accounts in one interface, need offline search, and prefer local-first encrypted storage. It is especially well matched to people who use several platforms and can keep their mail securely on those devices.

It is less suitable when more than two accounts must remain on a free plan, when a server-centered mailbox is preferred, or when local device storage is undesirable. The free tier is intentionally narrow; Pro is the realistic plan for multi-account users.

Pros and cons

Pros

Broad provider support: Gmail, Microsoft 365, Fastmail, JMAP, iCloud, Proton and IMAP cover varied personal and business setups.

Local-first privacy: Mail, attachments, drafts and search data stay on-device, while Cloud Vault stores ciphertext only.

Offline-capable search: The local cache keeps retrieval useful without a live connection.

Wide platform reach: Desktop, mobile, web and watch apps support mixed-device users.

Flat Pro billing: Unlimited accounts cost $35 per year without per-seat pricing.

Cons

Free account ceiling: Two connected accounts limits the no-cost plan for busy multi-inbox users.

Device dependence: Keeping mailbox data locally makes device storage and protection important.

Unpriced founding offer: The one-time backer price cannot be evaluated against Pro.

Alternatives

Email clients is the broader category guide for comparing this type of software.

Pick Zoho Mail instead if a forever-free plan for up to five users, one domain and 5 GB per user matters more than Epistles' local-first model.

Mailbutler Smart Assistant is another freemium option across desktop, mobile and browser platforms, with Starter features on its free tier.

Choose Spark Mail if unlimited email accounts, Smart Inbox, Smart Notifications and calendar tools are the priority on its free plan.

BlueMail is a freemium alternative supporting unlimited accounts on Personal, with Plus offered separately.

Choose eM Client if a free plan limited to two accounts and one device, or a $39.95-per-year Personal subscription, fits your setup.

Mailspring suits readers seeking an open-source codebase and desktop support for Linux, macOS and Windows.

Choose Mozilla Thunderbird if free, open-source email with calendar, contacts and multiple-account support is the deciding factor.

Spike is a freemium option with team-oriented plans and web support rather than Epistles' local-first emphasis.

Verdict

Epistles Mail is a strong choice for privacy-minded multi-device users who value offline access, local storage and broad provider compatibility. Choose Pro when unlimited accounts and secure expiring messages justify $35 per year; look elsewhere if you need a generous free account allowance or prefer mailbox data to remain primarily server-hosted.