1// Section 1: Segment users by feature-adoption metrics using Resend
2// This section establishes the conceptual segmentation strategy.
3// Segments are pre-created in Resend and referenced by ID in subsequent sections.
4// Low adopters, medium users, and high adopters are tracked by feature usage depth.
5const LOW_ADOPTER_SEGMENT_ID = 'low-adopter-segment-id';
6const MEDIUM_ADOPTER_SEGMENT_ID = 'medium-adopter-segment-id';
7const GENERAL_SEGMENT_ID = '78261eea-8f8b-4381-83c6-79fa7120f1cf';
8const SENT_BROADCAST_ID = '559ac32e-9ef5-46fb-82a1-b76b840c0f7b';

1{
2  "object": "broadcast",
3  "id": "559ac32e-9ef5-46fb-82a1-b76b840c0f7b",
4  "name": "Feature Adoption Segment",
5  "segment_id": "78261eea-8f8b-4381-83c6-79fa7120f1cf",
6  "from": "Acme <onboarding@resend.dev>",
7  "subject": "hello world",
8  "reply_to": null,
9  "preview_text": "Check out our latest announcements",
10  "html": "<p>Hello {{{contact.first_name|there}}}!</p>",
11  "text": "Hello {{{contact.first_name|there}}}!",
12  "status": "draft",
13  "created_at": "2026-12-01T19:32:22.980Z",
14  "scheduled_at": null,
15  "sent_at": null,
16  "topic_id": "b6d24b8e-af0b-4c3c-be0c-359bbd97381e"
17}

1import { Resend } from 'resend';
2
3const resend = new Resend('re_xxxxxxxxx');
4
5// Low adopters: highlight feature benefits
6const lowAdopterBroadcast = await resend.broadcasts.create({
7  segmentId: 'low-adopter-segment-id',
8  from: 'Acme <onboarding@resend.dev>',
9  subject: 'Discover the Power of [Feature]',
10  html: 'Hi {{{contact.first_name|there}}}, learn how [Feature] saves teams 5+ hours weekly. Get started: {{{RESEND_UNSUBSCRIBE_URL}}}',
11  send: true,
12});
13
14// Medium users: deepening guidance and advanced use cases
15const mediumUserBroadcast = await resend.broadcasts.create({
16  segmentId: 'medium-adopter-segment-id',
17  from: 'Acme <onboarding@resend.dev>',
18  subject: 'Level Up: Advanced [Feature] Techniques',
19  html: 'Hi {{{contact.first_name|there}}}, unlock expert workflows with [Feature] automation. Deep dive: {{{RESEND_UNSUBSCRIBE_URL}}}',
20  send: true,
21});
22
23// Bridge: capture broadcast IDs for downstream tracking
24const lowAdopterBroadcastId = lowAdopterBroadcast?.data?.id;
25const mediumUserBroadcastId = mediumUserBroadcast?.data?.id;
26console.log('Low adopter broadcast ID:', lowAdopterBroadcastId);
27console.log('Medium user broadcast ID:', mediumUserBroadcastId);

1{
2  "object": "broadcast",
3  "id": "49a3999c-0ce1-4ea6-ab68-afcd6dc2e794",
4  "name": "Feature Adoption Campaign",
5  "segment_id": "78261eea-8f8b-4381-83c6-79fa7120f1cf",
6  "from": "Acme <onboarding@resend.dev>",
7  "subject": "Introducing Feature X",
8  "preview_text": "Learn how to use our latest feature",
9  "html": "<p>Hello {{{contact.first_name|there}}}!</p>",
10  "text": "Hello {{{contact.first_name|there}}}!",
11  "status": "draft",
12  "created_at": "2026-12-01T19:32:22.980Z",
13  "scheduled_at": null,
14  "sent_at": null,
15  "topic_id": "b6d24b8e-af0b-4c3c-be0c-359bbd97381e"
16}

1// Section 3: Send the broadcast to all segmented contacts via Resend
2// Reusing the already-imported resend instance and segment ID from prior sections
3const segmentId = '78261eea-8f8b-4381-83c6-79fa7120f1cf';
4
5const { data, error } = await resend.broadcasts.create({
6  segmentId: segmentId,
7  from: 'Acme <onboarding@resend.dev>',
8  subject: 'hello world',
9  html: 'Hi {{{contact.first_name|there}}}, you can unsubscribe here: {{{RESEND_UNSUBSCRIBE_URL}}}',
10  send: true,
11});
12
13if (error) {
14  console.error('Broadcast send failed:', error);
15} else {
16  console.log('Broadcast sent to segment:', data.id);
17}
18
19// Bridge: store the general broadcast ID for retrieval in the next section
20const generalBroadcastId = data?.id ?? '559ac32e-9ef5-46fb-82a1-b76b840c0f7b';

{
  "id": "49a3999c-0ce1-4ea6-ab68-afcd6dc2e794"
}

1// Section 4: Track adoption outcomes and iterate campaigns with Resend insights
2// Using the resend instance and broadcast ID threaded from prior sections
3
4// Retrieve broadcast performance metrics
5const { data: broadcast, error } = await resend.broadcasts.get(
6  '559ac32e-9ef5-46fb-82a1-b76b840c0f7b',
7);
8
9if (broadcast && broadcast.status === 'sent') {
10  console.log('Campaign sent. Monitoring open rates, clicks, and adoption signals...');
11  // Check post-email logins and feature usage depth from behavioral data
12  const adoptionCohorts = broadcast.segment_id;
13  console.log(`Refining cohort ${adoptionCohorts} based on engagement patterns`);
14}
15
16// Create reactivation message for low-engagement cohorts
17const { data: reactivation, error: reactivationError } = await resend.broadcasts.create({
18  segmentId: broadcast?.segment_id || '78261eea-8f8b-4381-83c6-79fa7120f1cf',
19  from: 'Acme <onboarding@resend.dev>',
20  subject: 'We miss you! Re-engage with our latest features',
21  html: 'Hi {{{contact.first_name|there}}}, based on your usage patterns, we have new features tailored for you. {{{RESEND_UNSUBSCRIBE_URL}}}',
22  send: true,
23});
24
25if (reactivationError) {
26  console.error('Reactivation broadcast failed:', reactivationError);
27} else {
28  console.log('Reactivation broadcast sent. ID:', reactivation?.id);
29}