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// use case · lifecycle-marketing

Lifecycle email without the per-contact tax.

Campaigns, multi-step automations, topics and a hosted preference page — on a marketing lane kept separate from transactional so bulk behaviour never touches your critical mail. Billed by the volume you send, with unlimited contacts and no 'powered by' footer on any plan.

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Free sandbox to integrate · Production from $3/month

Blue duotone engraving: a flat-rate dispatch manifold fanning letters out to a large audience with no turnstile counting heads, beside a wall-mounted flowchart of pneumatic tubes where an inbound reply flips a switch to branch the journey — a small consent flag on each outgoing letter.
// the job

Market to a big list without paying for its size.

Most marketing tools bill by how many contacts you store, which punishes a growing list even when you rarely mail it. Drin bills by the mail you actually send, so a large, low-frequency audience costs a fraction of per-contact pricing.

The marketing lane runs campaigns and multi-step automations triggered by product events — or by an inbound reply — with per-topic consent, one-click unsubscribe and a hosted preference page. It sits on the same account as your transactional and inbound mail, on a lane of its own so a blast never dents your critical reputation.

Volume, not per-contactUnlimited contactsTopic consentNo brand footer
#01 — How it works

Trigger a journey on a real event.

Enroll a contact into an automation from any product event — a signup, a purchase, an inbound reply — with the topic they consented to. Drin handles sequencing, unsubscribes and the preference page.

Read the docs →
automations · enroll on an event
curl -X POST https://api.drin.run/v1/automations/onboarding/enroll \
  -H "Authorization: Bearer drin_k_…" \
  -d '{
    "contact": "sarah@gmail.com",
    "topic":   "product-updates"
  }'

# billed by send · unlimited contacts · no brand footer
#02 — What you get

The three that make it work.

DRIN · LIFECYCLE & MARKETING — WHAT YOU GETSHEET OF 3
01.1A lane of its own

Marketing is isolated from transactional streams, so a campaign can never slow or taint the mail your product must deliver.

01.2Automations on real events

Trigger multi-step journeys from product events or an inbound reply — a winback pause, a handoff, a follow-up.

01.3Consent, per topic

Per-topic opt-in with one-click unsubscribe and a hosted preference page — compliant by construction, not bolted on.

#03 — Built from

The surfaces that power it.

Not a bolt-on — this job runs on the same platform as everything else you send and receive. One account, one bill.

Marketing →Receive →Pricing →
#04 — Questions

Asked about lifecycle & marketing.

I have a big list I rarely email — who's cheaper?+

Drin, usually by a lot. Per-contact tools bill for stored contacts; Drin bills for messages sent. A large, low-frequency list is exactly where per-contact pricing hurts.

Is there a marketing UI, or is it API-only?+

Both. Campaigns, multi-step automations, lists/segments and a hosted preference page live in the dashboard; everything is also reachable by API.

Will my emails say 'Powered by Drin'?+

Never. There's no brand footer on any plan, including the sandbox.

Can an inbound reply trigger a campaign?+

Yes. Because Drin also receives, an inbound reply can start or stop an automation — something send-only marketing tools can't do.

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