Skip to content

Buyer's guide · 2026

The best dead man's switch services, honestly compared.

There are four main kinds of tool for getting messages or information to people after you're gone. Each is good at something different. Here's how to tell which one you need.

Quick pick

Send one or two emails if you go quiet
A simple email timer →
Give someone your passwords and vault
Password-manager emergency access →
Organise documents and accounts for an executor
A digital vault or estate app →
Leave letters, voice and video, released with safeguards
A message-release service →

The four kinds of tool

What's out there, by category.

01

Simple email timers

You set an interval and write one or more emails. If you don't click a check-in link in time, the emails are sent.

Good at
Cheap or free, quick to set up, easy to understand.
Watch out for
Usually one trigger and no human confirmation, so a missed email or a holiday can send everything. Mostly text only.
Best for
Low-stakes notes and people comfortable with the risk of a false send.
02

Password-manager emergency access

A trusted contact requests access to your vault. If you don't refuse within a waiting period you set, they get in.

Good at
The right way to hand over passwords and logins. Built into tools many people already use.
Watch out for
Designed for credentials, not for personal messages. Access is all or nothing, and the contact needs an account.
Best for
Handing over accounts and passwords to one trusted person.
03

Digital vaults and estate apps

Organised storage for documents, account lists and wishes, often alongside wills or estate planning.

Good at
Structure for executors: policies, deeds, account lists and funeral wishes in one place.
Watch out for
Release often relies on someone reporting a death, which can mean paperwork and delay. Personal messages can be secondary.
Best for
Getting paperwork in order for an executor or family member.
04

Message-release services

Letters, voice notes, videos and documents held until check-ins stop, then released through a sequence of safeguards.

Good at
Personal messages in many formats, per-recipient delivery, and safeguards against false sends.
Watch out for
Quality varies widely. Check the verification steps, the encryption model and what happens if the company closes.
Best for
Personal words for the people you love, with a careful release.

What to compare

The criteria that matter.

Whichever kind of tool you choose, ask these questions. A good provider answers each one clearly on its website.

  1. 01

    Trigger

    What actually starts a release?

    A missed check-in, a contact's request, or a reported death. Each fails in different ways.

  2. 02

    Verification safeguards

    Who confirms before anything is sent?

    A missed check-in isn't a confirmed death. Reminders, verifiers and grace periods prevent false sends.

  3. 03

    Release rules

    Can each message have its own timing?

    A letter for an eighteenth birthday shouldn't arrive in the same week as practical instructions.

  4. 04

    Media types

    Text only, or voice, video and documents too?

    A voice can mean more than a page. Instructions often need attachments.

  5. 05

    Encryption model

    How is content protected, and where is it hosted?

    Look for clear, accurate language: encrypted at rest, end-to-end, or neither. Check the hosting region.

  6. 06

    Continuity

    What happens if the company closes?

    Some services in this space have shut down. Look for a published plan for exports and delivery.

  7. 07

    Consent and control

    Can you pause, edit and cancel at any time?

    Life changes. Travel, illness and new relationships all mean changing your plan.

  8. 08

    Cost over time

    What will it cost over ten or twenty years?

    A monthly fee adds up. Lifetime options and free tiers change the picture.

Side by side

The criteria table, by category.

Typical features by category of tool. Individual products vary; check each provider's own documentation. Reviewed October 7, 2026.
CriteriaEmail timersPassword-manager accessDigital vaultsMessage-release services
TriggerMissed check-inContact requests accessDeath reported by a contactMissed check-ins
Verification safeguardsOften none beyond remindersWaiting period you can refuseVaries; often documentationReminders, verifiers, grace period (varies)
Release rulesAll at onceWhole vault at onceVariesOften per message
Media typesMostly textCredentials and notesDocuments and listsText, voice, video, documents
Encryption modelVaries widelyUsually end-to-endVariesVaries; check the wording
Continuity if the company closesRarely addressedDepends on vendorVariesVaries; ask for a published plan
Typical priceFree to lowIncluded with the managerAnnual subscriptionMonthly, annual or lifetime

How Sealkept approaches it

Where Sealkept fits.

Sealkept is a message-release service. Here's how it answers each criterion.

Trigger
Missed check-ins on a weekly, monthly, quarterly or yearly rhythm. Check in by email link, in the app, by replying to a text or pressing 1 on a call, with an optional secret PIN or face or fingerprint.
Verification safeguards
Several reminders, then one or two optional trusted verifiers, then a soft alert to recipients, then a grace period of 48 hours, 7 days or 21 days.
Release rules
Each message can be delivered after the grace period, a month later, on the recipient's birthday, or only once a verifier confirms.
Media types
Letters, voice notes, videos, photos and documents on every plan. Record in your browser or upload files.
Encryption model
Message content is encrypted at rest with AES-256-GCM. By default it isn't end-to-end encrypted, and we say so plainly. An optional private seal encrypts a letter in your browser so it opens only with a question your recipient can answer, or the key card you give them.
Continuity
Our continuity promise, covering what happens to your messages if we ever close, is published on the Trust page.
Consent and control
Pause, edit, reschedule or delete anything at any time. Nothing is final until it's delivered.
Cost over time
$5 (€5) a month, $39 (€36) a year, or $129 (€119) once for life. Letters, voice, video, documents and verifiers on every plan.

Sealkept isn't a will, a password manager or a legal document store. Use it alongside those, not instead of them.

The release, step by step

Nothing is sent on a single missed check-in.

Sealkept never sends on a single missed check-in. It reminds you several times, can ask a trusted verifier to confirm, sends recipients a soft alert, and waits a grace period you choose before anything is delivered.

  1. 01

    Reminders

    Miss a check-in and we remind you, several times, by email and in the app.

  2. 02

    Trusted verifier

    Optionally, one or two people you choose are asked to confirm before anything moves on.

  3. 03

    Soft alert

    Recipients get a gentle note that something may be wrong, with a way for you to say you're fine.

  4. 04

    Grace period

    We wait 48 hours, 7 days or 21 days, as you chose. One tap from you stops everything.

  5. 05

    Delivery

    Only then are your messages delivered, each by the rule you set for it.

FAQ

Frequently asked questions

It depends on what you're leaving. For one or two emails, a simple email timer is enough. For passwords, use your password manager's emergency access. For personal letters, voice notes and videos with protection against false sends, choose a message-release service with reminders, verifiers and a grace period.

Simple ones can, because a missed check-in isn't a confirmed death. Look for multiple reminders, a trusted verifier who confirms, a soft alert to recipients and a grace period before anything is delivered.

No. A message released by a dead man's switch is not a will and has no legal force over your estate. Use it for personal words and instructions, and keep a will for legal matters.

It depends entirely on the provider. Before you commit, look for a published continuity plan explaining exports, refunds and whether waiting messages would still be delivered.

It works like one for your Google account: after a period of inactivity it can notify contacts and share data you chose. It's tied to Google data and a single message, so it suits account handover more than personal letters.

Try the careful one. Today.

Write your first letter and see how the safeguards work. Cancel anytime; anything you've sealed is still delivered.

Write your first message

Set up in a few minutes · $5 a month, cancel anytime