Lettermint
Send email

Email activity

Email Activity is the operational view for messages sent through Lettermint. Use it to search recent messages, inspect delivery events, view message content, and understand delivery issues.

Email activity list with search, filters, status, route, and date controls.

Search and filter

Use the message list to find messages by sender, recipient, subject, status, project, route, tag, or date range. This is the fastest way to answer "what happened to this email?"

Message details

Open a message to review:

  • Current status
  • Sender and recipients
  • Project, route, and tag
  • Delivery event timeline
  • Webhook-related events
  • Bounce, complaint, suppression, and failure metadata
  • Available source, HTML, and plain-text content
Message detail page with event timeline and delivery status.

Deliverability insights

When available for your plan and message, Lettermint surfaces delivery and spam insights. Use these to spot missing plaintext, large bodies, suspicious links, missing unsubscribe handling, or sender/domain issues.

The spam score is the combined weight of the rules matched during the message scan. Lower scores indicate a cleaner message:

Spam scoreInterpretation
Below 5Clean
5 through 10Potential spam markers
Above 10 and below 15Likely spam
15 or higherDefinite spam

A null score means that no spam assessment is available for the message. Spam scores and detailed symbols are available on plans with Spam Insights.

Deliverability and spam insights panel for a sent message.

Team API access

The Team API exposes read-only message endpoints for automation:

  • GET /v1/messages
  • GET /v1/messages/{messageId}
  • GET /v1/messages/{messageId}/events
  • GET /v1/messages/{messageId}/source
  • GET /v1/messages/{messageId}/html
  • GET /v1/messages/{messageId}/text

These endpoints require read:messages.

For plans with Spam Insights, message list items and message details include spam_score. Individual message details also include spam_symbols, which describe the rules contributing to the score. These fields work the same way for sent and received messages.

Next steps

Ruby (Mail)Scheduling