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MailTag

mailtag.io

From $6.58/mo Free plan WebAPI
Visit mailtag.io
Spec score 8.2 #15 of 43 in Email Tracking Software

What it is

MailTag categorizes incoming messages inside an inbox you already use. It supports Gmail, Google Workspace, iCloud, Yahoo, Fastmail and IMAP mailboxes, and checks for new mail every five minutes. You can use its categories or describe custom ones in a single line. Existing mail can be labeled in one pass without deletion. Sender and domain controls let you unsubscribe, archive or apply a label rule, with confirmation and undo. MailTag says processing happens in memory on its own hardware in Germany, without sending email to outside services or storing message content. App passwords are encrypted with AES-256-GCM. Paid plans provide per-category webhooks for services such as Slack, Discord, Zapier, Make and n8n; Business adds an HTTP Triage API. The Free plan covers one mailbox and 100 labeled emails monthly. Solo is $6.59 a year, Pro $14.08 a year and Business $36.58 a year, each billed annually as listed. Seven days of Pro are available without a card, after which accounts move to Free unless upgraded.

Spec sheet

Purpose
MailTag assigns incoming email to user-defined categories in the email inbox the user already uses.Read 9 Oct 2026 · mailtag.app
API
The Business plan includes a Triage API that classifies email over HTTP.Read 9 Oct 2026 · mailtag.app
Integrations
Per-category webhooks are available on paid plans and the site lists Slack, Discord, Zapier, Make and n8n as compatible services.Read 9 Oct 2026 · mailtag.app
Security
The site says mailbox app passwords are encrypted with AES-256-GCM and deleted when the mailbox or account is removed.Read 9 Oct 2026 · mailtag.app
Headquarters
Moraga, California, United StatesRead 28 Sep 2026 · mailtag.io
Activity data retention
MailTag says its activity log is kept for 30 days and Insights retains email date, sender and category without subjects for 12 months.Read 9 Oct 2026 · mailtag.app
Custom categories
Users can start with MailTag’s categories or describe their own in one line.Read 9 Oct 2026 · mailtag.app
Data location and handling
MailTag says email is processed on its own hardware in Germany, in memory, and is not sent to outside companies or services or stored as content.Read 9 Oct 2026 · mailtag.app
History labeling
MailTag can label existing mail in one go, and the site says nothing is deleted in that process.Read 9 Oct 2026 · mailtag.app
Mailbox support
The site lists Gmail, Google Workspace, iCloud, Yahoo, Fastmail and any IMAP inbox as supported.Read 9 Oct 2026 · mailtag.app
Permissions and limitation
MailTag says it cannot send or delete email; Outlook.com and most Microsoft 365 tenants are not currently supported, and native Microsoft sign-in is on the roadmap.Read 9 Oct 2026 · mailtag.app
Processing cadence
The site says MailTag checks for new mail every 5 minutes.Read 9 Oct 2026 · mailtag.app
Sender controls
Users can review senders and domains, unsubscribe, archive or apply a chosen label rule, with confirmation and undo available.Read 9 Oct 2026 · mailtag.app
Support and audience
The Business plan is described as for freelancers and agencies and includes priority support; the site lists [email protected] as its support contact.Read 9 Oct 2026 · mailtag.app
Trial and cancellation
The site offers 7 days of Pro without a credit card, after which accounts move to Free unless a paid plan is selected; cancellation is through the linked Stripe customer portal.Read 9 Oct 2026 · mailtag.app

Plans and prices

Free Free forever 1 mailbox · 100 emails a month labeled · 3 unsubscribes a month · insights: last 30 days · newest 50 emails tidied free Read 9 Oct 2026 · mailtag.app
Solo $79 a year $79 billed once a year 2 mailboxes · 2,000 emails a month · unlimited unsubscribe, archive and rules · insights: 3 months · tidy-up of up to 5,000 emails once a year Read 9 Oct 2026 · mailtag.app
Pro $169 a year $169 billed once a year 3 mailboxes · 10,000 emails a month · everything in Solo · insights: 12 months · tidy-up of up to 20,000 emails once a year Read 9 Oct 2026 · mailtag.app
Business $439 a year $439 billed once a year 10 mailboxes · 50,000 emails a month · everything in Pro · Triage API · Insights export to CSV · priority support · tidy-up of up to 50,000 emails once a year Read 9 Oct 2026 · mailtag.app

Every MailTag plan and price →

Strong points and limits

Strong points

  • Supports major consumer and IMAP inboxes
  • Labels existing mail without deleting it
  • Provides confirmation and undo for rules
  • Processes email in memory in Germany
  • Offers webhooks and a Business API

Limits

  • Outlook.com is not currently supported
  • Most Microsoft 365 tenants are unsupported
  • Cannot send or delete email
  • Free plan labels 100 emails monthly

Who it suits

MailTag suits people and teams organizing supported inboxes with labels, unsubscribe rules and integrations. Business is described for freelancers and agencies needing multiple mailboxes, API access or priority support.

Verdict

MailTag focuses on inbox categorization, sender controls and privacy-oriented processing. Its free tier is limited, while broader mailbox capacity and automation require annual paid plans.

Where Specifiction places it

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