Mail Time

What it does

When your agent uses it

• Debugging MailTime and ostrio:mailer email queues for horizontally scaled Node.js
• JoSk email scheduling
• Redis Cluster / KeyDB Cluster / Valkey useHashTags
• KeyDB active-replication

Example prompts

• “/mail-time”

Requirements

• Node.js

What it can do on your machine

Read from SKILL.md and the folder at commit e5d60de. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  Shell commands in SKILL.md call:

  • npx

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  No URLs in SKILL.md. Its commands use npx, which can reach the network depending on how they are called.

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names no API keys, tokens, secrets or passwords.

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Mail Time loads about 1k tokens when it runs, and up to ~19k if it reads all its reference files. Until then it costs about 212 tokens; SKILL.md has 367 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~212

When it runs · the whole SKILL.md, loaded when a task matches

~1k

With references · SKILL.md plus every file in references/, read only if the agent opens them

~19k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from veliovgroup/mail-time at commit e5d60de, republished under its BSD-3-Clause licence (© veliovgroup). 367 words, ~1,047 tokens.

name

mail-time

description

Use when building, wiring, reviewing, or debugging MailTime and ostrio:mailer email queues for horizontally scaled Node.js, Bun, or Meteor apps. Trigger on MailTime, MongoQueue, RedisQueue, PostgresQueue, mailTimePreset, JoSk email scheduling, Redis Cluster / KeyDB Cluster / Valkey useHashTags, KeyDB active-replication, scheduled mail, retries, sendAt, concatEmails, multi-SMTP backup or balancer, client/server mail workers, dedicated mail hosts, graceful shutdown, pause/resume, custom queue adapters, duplicate sends across PM2/Kubernetes/ECS, partial-recipient delivery, claim renewal, sendingTimeout, strictPayload, raw/template escaping, transportFrom, OTP versus marketing policies, email outbox/HA sending, or migrations from Agenda, Bull, BullMQ, Bree, and sendgrid-queue. Also covers legacy mail-time 3.x pinned on Node 14/16.

new MailTime({
  type: 'server' | 'client',
  queue: new <Mongo|Redis|Postgres>Queue({ client|db }),
  transports, // server only
  josk: { adapter: { type, client|db }, lockOwnerId }, // server only
  prefix: 'otp',
})

© veliovgroup, BSD-3-Clause. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 5 other files (references) in skills/mail-time of veliovgroup/mail-time.

• SKILL.md
• references/adapters.md
• references/api.md
• references/legacy-v3.md
• references/recipes.md
• references/tuning.md

Open the folder on GitHubat commit e5d60de