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Importance labels replace Gmail’s tabs with something smarter. Every incoming email is auto-classified by AI into categories like Important, Newsletter, or Billing — fully customizable, no rules or filters needed.

How Classification Works

The AI reads sender, subject, and body, then assigns the most relevant label using:
  • Sender identity and your relationship
  • Email content and whether it requires action
  • Label descriptions you define
  • Training examples you provide
  • Feedback history from past corrections
Accuracy improves over time as you correct misclassifications.

Default Labels

LabelCatchesDefault OnNotifications
ImportantEmails requiring response or actionYesOn
CalendarMeeting invites and calendar notificationsYesOn
BillingPayments, invoices, receiptsYesOff
NewsletterInformational newslettersYesOff
HiringRecruitment communicationsNoOff
InvestorsVC and investor communicationsNoOff
To RespondEmails needing personal replyNoOff
To DelegateEmails for someone else on your teamNoOff
FYIInformational, no response neededNoOff
OtherEverything elseYesOff
Most users enable 3-5 labels that match their workflow.
Importance label tabs in the inbox with unread counts

Creating a Custom Label

1

Open Settings

Go to Settings > Labels (Cmd+,) and click Create Label (or press n l).
2

Name and Describe

Give it a name and write a specific description: “Emails from current paying customers about product issues or feature requests. Excludes sales prospects.”
3

Configure

Optionally enable notifications and auto-archive.
Good descriptions include what the label should and should not contain. “Investor stuff” is weak. “Emails from investors or board members about fundraising, board meetings, or financial updates — excludes cold outreach” is strong.

Training Examples

The most powerful accuracy tool. In Settings > Labels, click a label and add matched examples (emails that belong) and unmatched examples (emails that don’t). A few well-chosen examples outperform long descriptions.

The Feedback Loop

Every time you move an email between labels, the AI treats it as a correction. Drag the email to the correct tab, or press l/v to reassign. After a few corrections, the same misclassification rarely recurs.

Per-Label Settings

SettingWhat It Does
NotificationsPush notification on new email in this label
Auto-archiveAuto-archive emails (useful for receipts)
DescriptionAI classification criteria
Training examplesSpecific emails that should/shouldn’t match

AI Memories

Teach the AI about your preferences and contacts.

Why Primary Matters

How using Slashy full-time accelerates AI learning.