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A Mac app that lets you hide specific windows from screen shares while still using them.
Watch out · Everything runs locally on the Mac.
Works offline
What to know▼
How it works
A Mac app that lets you hide specific windows from screen shares while still using them, with a clean presentation desktop and notification guard, working via virtual camera with any meeting app.
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Feeds a fresh inbox with real newsletter volume and engagement signals, for developers and marketers who need to warm up deliverability before running an actual email campaign.
What to know▼
How it works
Feeds a target inbox hundreds of real, independently-run newsletters daily to build genuine mail volume, then simulates opening, reading, and interacting with that mail to train the inbox's spam filter before a real campaign is sent in to see where it lands.
Best for
Cold email senders, agencies, and marketers who need to warm up a fresh inbox's deliverability before scaling a real campaign.
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A disposable email service with reusable inboxes that, unlike typical temp mail, don't vanish after 10 minutes, usable free without signup.
FreeNo sign-up
What to know▼
How it works
Free tier gives a reusable disposable inbox with no signup; paid tier adds private inboxes, 30-day addresses, full mail history, ad removal, and up to 100 mailboxes.
Pricing
Free with ads; paid 'Pro' tier removes ads and adds more mailboxes.
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A self-hosted transactional and marketing email platform deployed into your own AWS account so you keep full ownership of infrastructure and customer data instead of using a hosted vendor.
Self-hosted
What to know▼
How it works
Deploy in your own AWS account; manage contacts, audiences, templates, domains, analytics
What's different
No vendor lock-in or per-contact pricing
Best for
Developers/businesses wanting a self-hosted alternative to Resend, SendGrid, Mailgun, Mailchimp, SES
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A macOS desktop app that migrates and converts email and mailbox files like PST, OST and MBOX between 15+ webmail providers including Gmail, Outlook and Yahoo.
Can export my data
What to know▼
How it works
A macOS desktop app that migrates emails between 15+ webmail services (Gmail, Office 365, Yahoo, AOL, IMAP) and converts mailbox files such as PST, OST, MBOX, EML, EMLX, MSG, and OLM into over 20 formats, preserving attachments, metadata, and folder structure.
Best for
macOS users needing to migrate or convert mailboxes between webmail providers or legacy file formats.
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An open-source CLI that checks SPF/DKIM/DMARC/MX records, verifies addresses via SMTP, and flags disposable/role-based emails, for developers validating deliverability before sending.
Open source
What to know▼
How it works
DNS health scoring, SMTP RCPT TO verification, domain typo correction, 29 RBL blacklist scans, ~74k disposable domain detection; includes REST API.
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Instant, no-signup temporary email aliases with rotating domains to dodge blacklists, plus a public API for developers who want to build it into their own workflows.
FreeNo sign-upData stays with you
What to know▼
How it works
Creates custom, instant temporary email aliases (any inbox name) without sign-up, receiving emails in real-time from multiple rotating domains to avoid blacklists; also offers a public API and open-source frontend.
What's different
Rotating domains to avoid blacklists, plus no popups, timers, or tracking, unlike traditional temp mail tools.
Pricing
Free.
Best for
People needing disposable email for sign-up verifications or testing, and developers who want to build disposable email into their own workflows via the API.
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Converts Outlook PST mailboxes to MBOX format, including calendars and contacts, without requiring Outlook to be installed.
Can export my data
What to know▼
How it works
Converts Outlook OST files to PST format in a few steps, preserving emails, contacts, calendars, tasks, notes, and attachments and the original folder structure, without modifying the original file.
What's different
Compatible with Outlook 2021, 2019, 2016, and earlier; supports single or multiple file conversion.
Pricing
Free demo version available; trial edition has conversion limits.
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Syncs a support mailbox into GitHub, GitLab or Linear so you can run a service desk from your existing issue tracker instead of paying for separate helpdesk software.
Open source
What to know▼
How it works
Syncs a support mailbox to your issue tracker over standard IMAP/SMTP, turning incoming emails into tracked issues so you can run a service desk from GitHub, GitLab, or Linear.
What's different
Open-source and works with the automation pipelines you've already built in your issue tracker, instead of adding a separate per-seat helpdesk tool.
Best for
Teams already living in GitHub, GitLab, or Linear who want to handle customer email without buying dedicated helpdesk software.
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Transactional email API for developers that can route mail through your own AWS SES account (zero data stored on their servers) or their managed infrastructure.
What to know▼
How it works
Single REST API for transactional email, either routed through your own AWS SES account (BYOC, zero data stored on their servers) or their managed infrastructure.
Best for
Developers and teams who want data privacy and control without giving up ease of integration.
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A desktop email client that syncs your mailbox into local SQLite and searches it by meaning without cloud calls. Free, open source, no account or telemetry, for Gmail, Outlook or any IMAP inbox.
FreeNo sign-upOpen source
What to know▼
How it works
Syncs your whole mailbox into a local SQLite database and lets you search it by meaning without any cloud calls, with keyboard-speed triage. Supports Gmail, Outlook, and any IMAP account, plus a CalDAV calendar.
What's different
Open source with no account and no telemetry.
Pricing
Free.
Best for
People who want a fast, keyboard-driven email client that keeps their mailbox local.
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One shareable link turns any customer message into a quiet inbox with email replies, for businesses who want to skip ticketing systems for simple support.
What to know▼
How it works
Share one link; people message you through it and you reply, with replies delivered to them as email -- no chat widget, ticketing system, or account required on their side.
What's different
Skips the usual widgets and ticket clutter of a helpdesk in favor of a single link and plain email replies.
Best for
Businesses that want a simple, minimal inbox for customer messages without adopting a full ticketing tool.
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Resells professional Google Workspace and Outlook business email inboxes starting at $2.6/month, for businesses that need branded email without managing infrastructure.
What to know▼
How it works
Resells professional Google Workspace and Outlook business email inboxes.
Pricing
Starting at $2.6 per inbox per month.
Best for
Businesses that need branded professional email addresses without setting up their own infrastructure.
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Verifies email deliverability through a 5-step pipeline (syntax, MX, disposable domain, catch-all, SMTP check) at a per-email price well below ZeroBounce or NeverBounce.
We check every product on this page once a day and record whether it still answers.
A single inbox that pulls together WhatsApp, Telegram, Instagram and Messenger conversations so you don't have to switch apps to read messages.
What to know▼
How it works
Brings WhatsApp, Telegram, Instagram and Facebook Messenger into one unified inbox so you can send and receive messages from all of them in a single app.
Best for
People who message across multiple platforms and want to avoid switching between apps.
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A Meta-verified WhatsApp Business API platform with a shared team inbox, broadcast campaigns and automation, built for business and marketing teams, not a raw developer API.
What to know▼
How it works
A Meta-verified WhatsApp Business API platform providing a shared team inbox, broadcast campaigns, contact management, and automation for business messaging.
Pricing
Founding Access offer: reserve a seat for a 90-day beta, then get 50% off the first bill afterward, or a full refund if it's not a fit.
Best for
Business and marketing teams managing customer conversations over WhatsApp who want a shared inbox rather than a raw API.
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A domain-inbox management tool for startups running multiple projects or brands, offering shared team mailboxes, aliases, and forwarding for one flat fee regardless of domain count.
What to know▼
How it works
Manages multiple domain inboxes from one place with shared queues for team mailboxes, aliases, and forwarding.
Pricing
Flat fee, no per-domain charge.
Best for
Startups/teams managing email across several domains or brands.
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numasims provides virtual phone numbers for receiving OTP verification or renting a long-term number with real SMS, calls, and MMS across 60+ countries, to verify services like WhatsApp, Telegram, and Gmail without a SIM card.
What to know▼
How it works
get an instant virtual number to receive an OTP for a service, or rent a long-term number with real SMS, voice, and MMS
Best for
people verifying accounts on WhatsApp, Telegram, Gmail, or other services without using their own SIM
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Untangle scans a user's Gmail export to list every service that has ever emailed them, letting them see and unsubscribe from what's tangled into their inbox.
What to know▼
How it works
scans a Gmail data export and surfaces every service that has signed the user up or emailed them, with one-click unsubscribe
Best for
individuals wanting to see and clean up which services have access to their inbox
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Verifies whether Gmail, iCloud, and other email addresses actually exist using browser-based login simulation.
Nothing to install
What to know▼
How it works
Uses browser automation to simulate real login attempts on Gmail, iCloud, Yahoo, Outlook, and 20+ providers, plus SMTP checks for business domains, bulk CSV upload, and API access.
What's different
Unlike verifiers that only check syntax and DNS, it can tell if a Gmail or iCloud address actually exists.
Pricing
Pay-as-you-go.
Best for
Email marketers and developers needing accurate lists.
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Converts any logo into the strict SVG format required for BIMI so your verified brand logo shows in Gmail and Apple Mail, plus a free DMARC audit; a niche tool for email-deliverability and brand teams.
FreeNo sign-up
What to know▼
How it works
Converts any PNG, JPG or SVG logo into the strict W3C SVG Tiny P/S format required for BIMI, and also runs a DMARC audit and generates the needed DNS TXT record.
What's different
Handles the specific W3C-compliant SVG conversion that most existing logos fail, which is the main blocker to getting BIMI working.
Pricing
Free, no account required.
Best for
Email-deliverability and brand teams trying to get their verified logo showing in Gmail and Apple Mail.
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A GTD task manager that keeps every task on your device only, no account, no cloud sync — for people who want the full method without their data leaving their control.
No sign-upWorks offlineData stays with you
What to know▼
How it works
Implements the full Getting Things Done method while keeping all tasks entirely on the user's local device, with no account and no cloud storage.
What's different
Full GTD method implementation with no account, no cloud sync and no upload — data never leaves the device.
Best for
GTD practitioners who want the full method but don't want their task data stored in the cloud.
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Generates Gmail dot-variation aliases from one address instantly — a narrow utility and a direct alternative to freegmail.netlify.app, not a general email tool.
What to know▼
How it works
Generates Gmail dot-variation aliases from a single Gmail address by programmatically inserting periods into the local part of the address.
What's different
Built as a direct alternative to freegmail.netlify.app for the same narrow function.
Best for
People who want multiple Gmail aliases from one address without manually typing out dot variations.
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Delays your Gmail sends by 1 minute to 1 hour and flags likely mistakes, missing attachments, reply-all risk, sensitive info, using Gmail's own API with no tracking.
No tracking
What to know▼
How it works
Holds Gmail sends in a local queue for a configurable delay from 1 minute to 1 hour, letting the user cancel, pause, or edit before the message leaves; it also flags missing attachments, first-time recipients, risky reply-alls, sensitive info, and rushed drafts.
What's different
Offers a longer, configurable delay than Gmail's built-in 30-second undo, while email stays local until sent through Gmail's own API with no tracking or separate server.
Best for
People who want more breathing room than Gmail's default undo-send window and a check against common sending mistakes.
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