● Production · lead engine + CRM + email · multi-tenant

From the first lead
to the client — in one system.

Mailing Suite is a complete acquisition engine — from scraping the catalogue pool (1.48M apartments across 116 cities), through static and dynamic segmentation, cold and nurture campaigns, all the way to cohort tracking from an engaged contact to a signed contract. No Mailchimp, no Apollo, no ActiveCampaign, no five separate tools. One database, one funnel, one team that knows everything.

Status

● Production live

Lead universe

1.48M apartments · 116 cities

Cohort

1,390 engaged → 42 clients

Segmentation

9 dimensions · static + dynamic

Stack

Next.js · Supabase · Resend · M365

Where the leads come from

Lead universe: 1,480,304 apartments across 116 cities.

Most mailing tools start by asking you to "upload your list". Mailing Suite starts differently — with a catalogue pool of 116 tourist cities holding 1.48M apartments and 749,742 hosts. Filter by continent, country and portfolio size (6–10 apartments / 21–50 / 51–100 / 100+). Scrape status is visible per city — you know what is fresh and what is waiting to be activated. 113 cities sit as a passive pool — prepared databases, ready to switch on with a single click.

Mailing Suite — World view with a catalogue of 116 cities, 1.48M apartments, filtering by continent and portfolio size

SAMPLE DATA 116 cities in the catalogue · 1,480,304 apartments · filters: continent / country / portfolio size / scrape status · a passive pool of 113 cities waiting for activation

Segmentation architecture

Static lists, manual filters, dynamic segments.

Four kinds of audience group in a single view. Static lists (12) — a snapshot of members at a given moment. Manual filters (13) — lists with saved criteria, refreshed on demand. Campaign lists (2) — auto-generated from previous sends. Dynamic segments (1) — the filter recalculates every time you open it, always live data. Everything carries a country flag (PL / AT / DE / CH) — one campaign per market, no cross-contamination.

Mailing Suite — Lists & segments view with 12 static lists, 13 manual filters, 2 campaign lists, 1 dynamic segment, multi-country (PL/AT/DE/CH)

SAMPLE DATA 4 kinds of group · multi-country (PL / AT / DE / CH) · per list: member count, country, date of last change · dynamic segments with live recalculation

Campaigns

Every campaign. Every number. One table.

A table of active / sent / archived campaigns. Per campaign: name, status (completed / scheduled / draft), recipients, sent, opened, clicks, replies, bounces, date. Sortable by any metric. The "Spring" campaign — 1,245 recipients, 1,203 sent, 642 opened (53% open rate), 286 clicks (44% CTR), 91 replies.

Mailing Suite — campaign table with open / click / reply / bounce metrics

SAMPLE DATA Campaign table · 8 metrics per campaign · Active / Sent / Archived tabs · client anonymised (apartmentsite)

Product numbers

What Mailing Suite measures.

Numbers from a real multi-tenant client. NDA required. Figures are anonymised in the screenshots. We will show the originals on a call.

1.48M

Lead universe

apartments across 116 cities · catalogue pool

53%

Flagship open rate

vs industry ~21%

44%

CTR per opening

click / open ratio

1,390 → 42

Conversion cohort

engaged → demo → hot → client · 3% end-to-end

Segmentation dimensions

opens · clicks · replies · visits · time · region

~1%

Bounce rate

auto-cleanup after 3 bounces

Per-campaign analytics

The full funnel from send to conversion.

Click a campaign → the full breakdown: 320 recipients · 319 sent (99%) · 305 delivered (95%) · 204 opens (66% of delivered) · 122 clicks (60% click/open) · 38 replies · 14 bounces. Below the stats — a list of all 305 recipients with their individual status: delivered / clicked / opened / bounced. Every email address is clickable — you see that person's full history in the CRM.

Mailing Suite — full campaign analytics with funnel and recipient list

SAMPLE DATA "Nowe Apartamenty Tatry" campaign · 7-metric funnel · 305 recipients with individual status · clickable email → CRM

Send funnel

From campaign creation to conversion in 6 stages.

Every step is measured separately. You know not only how many people opened, but how many of those openers clicked, and how many of the clickers replied. Drop-off per stage → you can see exactly where a campaign loses momentum.

320

100%

Recipients

segment selected

319

99.7%

Sent

SMTP queued

305

95%

Delivered

delivered confirmed

204

66%

Opened

unique opens

122

40%

Clicks

CTR per delivered

12%

Replies

2-way reply

Behavioural segmentation

12 ready-made segments built on 9 dimensions.

Nine segmentation dimensions (open / click / reply / visits / time / region / country / age / custom) produce a library of 12 named segments. When you create a campaign you pick from a dropdown: "From campaign 1 — Early Adopters (215)", "Remaining 30%, part I (1,045)", "Premium panel subscribers (367)", "Beta testers (512)". Every segment is a dynamic group calculated in real time — who opened campaign X, who clicked link Y, who has not opened the last three.

Mailing Suite — creating a campaign with a dropdown of behavioural segments

SAMPLE DATA "New campaign" form · 12+ dynamic segments · live preview (list, recipients, template, pacing) · client anonymised (demoapp)

Early Adopters

215

opened + clicked the first campaign

Remaining 30%, part I

1,045

opened but did not click

Premium subscribers

367

tag: premium subscription

Beta testers

512

tag: beta-list + opt-in

Inactive 90 days

289

no open for 90+ days

Newsletter subscribers

834

opt-in newsletter

Top engagers

187

5+ opens in the last 30 days

Ready for re-activation

645

no activity for 60–89 days

Cohort tracking

From an engaged contact to a signed contract.

Most mailing systems stop reporting at "who opened the email". We go further — we track every contact all the way to becoming a client. Each host gets a temperature (warm / hot) and an engagement score calculated from 6 signals (open / click / reply / visits / time spent / form). A single view shows where the whole cohort stands.

SAMPLE DATA Cohort: 1,390 engaged hosts · 156 opened the demo · 87 hot leads (replied) · 42 clients · per host: temperature, engagement score, 6 behavioural signals

Engaged

1,390

opened or clicked

Demo

156

visited the demo site

Hot leads

replied · 56% conversion from demo

Clients

48% of hot · 3% of engaged

The whole funnel in one view · an honest 3% conversion from engaged → client

9 modules

Everything an email marketer needs.

Straight from the ops manager brief — exactly what is inside Mailing Suite.

Campaign creation and management

An in-app campaign builder, message templates, your own footers and layouts, send scheduling, duplicating and editing existing campaigns. No Mailchimp / ActiveCampaign / Klaviyo.

Intelligent segmentation

Build segments by opens, clicks, engagement, age, region, campaign history and reactions to specific content. AI suggestions based on historical data — the system proposes segments on its own.

Full real-time analytics

Open rate / CTR / conversion / replies / deliverability / bounces / engagement. Per campaign, per segment, per user. Resend webhooks update the dashboard live.

Deliverability management

Auto-detection of undelivered mail, dormant addresses, missing engagement and delivery problems. Auto-cleanup after 3 bounces. Suppression lists managed automatically.

Client profile + engagement score

An individual profile per client: campaign history, opens, clicks, replies, activity and an automatic status (active / moderately active / inactive). Communication matched to that status.

Drip sequences

Sequence-based campaigns — the automation sends 1, 7, 14 and 30 days after a trigger (newsletter sign-up, purchase, abandoned cart). Every message has its own A/B test.

Templates + footers + layouts

A template builder with drag-and-drop blocks. Reusable footers per brand (multi-tenant). Layouts per campaign type — newsletter / promotion / transactional / onboarding.

Built-in two-way inbox

Client replies land in the CRM, not in a mailbox. You can answer without leaving the application. The full communication history per client is visible straight away.

Multi-tenant with a CRM

Every client gets a separate instance (apartmentsite / demoapp / others) with isolated data (Postgres RLS). Shared code, its own database, its own footer branding.

Landscape

Mailing Suite vs. subscription SaaS.

Mailchimp, ActiveCampaign and Klaviyo are the market leaders. €30-200/month per workspace depending on list size. Mailing Suite is for operators who want custom development around their own workflow, their own sending domain and full control over their data.

Behavioural segmentation across 9 dimensions

yes

basic

yes · advanced

yes · e-commerce

Fully integrated CRM

native

CRM add-on

native

limited CRM

Drip sequences + A/B

included

premium

included

Native Polish + DACH

yes · 3 languages

EN-first

Your own sending domain

yes · your own DKIM/SPF

yes

The code is yours

self-hosted

vendor lock-in

Pricing model

setup + low hosting

SaaS per contact

Stack

What Mailing Suite is built from.

The standard StudioApps stack + Resend for deliverability + the Microsoft Graph API for two-way replies from company M365 mailboxes.

Next.js 16

App router

React 19

TypeScript

strict

Supabase

Multi-tenant RLS

PostgreSQL

Segments + logs

Tailwind 4

Styling

Resend

SMTP + webhooks

MS Graph API

2-way reply

React Email

Templates

Inngest

Sequences · cron

pgvector

Embedding segments

Vercel

Hosting EU

Honestly

What Mailing Suite does not have yet.

A production product sending real campaigns. Some features are still in the pipeline or live only in the backend. Here is what is unfinished — so you know exactly what you are getting.

Roadmap A visual drag-and-drop builder for templates — currently React Email in code. New UI in Q3 2026.
Roadmap SMS + WhatsApp marketing — email only for now. SMSAPI.pl and WhatsApp Business integrations are on the roadmap.
Limit No web push notifications — email only. Browser push is in the backlog.
By design No public SaaS plan. We build per client — the quote depends on scope; hosting and email sending are billed at provider cost.
UI gap A "C-level summary" dashboard with trends and alerts is on the roadmap. For now, analytics are per campaign.
Deliberate No automatic AI copywriting for every message — templates are written by hand. AI suggestions for split A/B headlines are on the roadmap.

Complementary products

After the send — handling the replies.

Mailing Suite sends campaigns to behavioural segments. Customer Service AI handles what comes back — inbound emails with complaints, questions and returns. The AI Concierge drafts a reply in 3 seconds and the agent clicks "Send". The same M365 mailboxes, both directions of communication.

Complementary product

Customer Service AI — a CRM for e-commerce

A CRM with AI auto-reply integrating Magento + PrestaShop + Office 365 + Claude. Automatic matching of emails to orders, AI Concierge in 3 seconds. Response time: 4h → 15 min.

See Customer Service AI →

From the first lead to the client — in one system.