✨ Self-hosted · One-time purchase · PHP + MariaDB

Stop losing subscribers
to bad bounce data

The self-hosted IMAP bounce manager for PHP — classify, suppress, and move on. Works with any mailer.

CloudWizard Bounce Manager scans your IMAP bounce mailboxes, classifies every failure, and builds a clean suppression list — without ever removing a valid subscriber because of a spam refusal. Use it with the system you already have, or as part of the complete CloudWizard Suite.

Get CloudWizard Bounce Manager — €49 → 👀 See the demo
CloudWizard IMAP Bounce Manager dashboard showing classified bounces
∞
Unlimited IMAP accounts
DMARC
Reports read and summarised
PHP 8.1+
No Composer, no monthly fees
The Problem

Bounce management is broken
for self-hosters

Every email service charges monthly. But if you run your own stack, you're left piecing together scripts — or ignoring bounces entirely.

📉

Hard bounces tank deliverability

Sending to non-existent addresses signals spam behavior to Gmail, Outlook, and major ISPs. Your entire list suffers.

🔁

Soft bounces turn into hard ones

A full mailbox today might be abandoned tomorrow. Without a counter, you keep sending — and eventually get flagged.

🚫

Spam refusals look like dead addresses

Most scripts mark a valid address as dead when a provider refuses your mail as spam. You lose real subscribers for something that was about your reputation, not theirs.

💸

SaaS tools charge monthly for this

Hosted platforms charge €30–300/month for list hygiene. If you self-host, you shouldn't have to pay forever.

Features

Everything you need.
Nothing you don't.

A focused tool built for developers and marketers who run their own mail infrastructure.

📬

Multi-account IMAP scanning

Connect unlimited IMAP accounts. Scanning runs in chunks with a live progress bar, so even very large mailboxes are safe. Processed bounces are removed from the mailbox.

🧠

Smart bounce classification

RFC 3464 DSN parsing, SMTP code analysis, VERP support and keyword matching tell true hard bounces from IP blocks and spam rejections.

🛠

Editable pattern library

Subject rules and body patterns seeded on install and fully editable in the UI. Add your own, toggle them on or off, set the priority order. No code changes needed.

⚖️

Thresholds you control

Suppress after 1 hard bounce and 3 soft bounces by default, both adjustable. Or turn auto-suppress off and just classify and log.

🛡️

Valid subscribers stay

Spam refusals and IP blocks are logged separately and never suppress an address. Only dead addresses and repeated soft bounces do.

📈

DMARC reports

Reads the daily reports from Google, Microsoft, Mail.ru, Yahoo and others and shows pass and fail per provider and sending server, so you see why mail lands in spam.

📋

Audit log & failure tracking

Every scan is logged with account, counts and time. Messages where no recipient could be found go to a failure log for review — nothing is silently dropped.

📤

CSV export

Export the exclude list (hard and soft), hard only, soft only, or everything, and load it into whichever mailer you use.

🔒

Self-hosted & GDPR-friendly

Your subscriber data never leaves your server. No third-party APIs, no SaaS dependencies, no monthly fees.

Bounce Types

Knows the difference.
Acts accordingly.

Most bounce handlers treat everything as a hard bounce. CloudWizard classifies correctly — protecting valid addresses from being wrongly removed.

🔴 Hard Bounce

Permanent failure — address doesn't exist or domain is invalid. Added to your suppression list on the first one by default. Never send to these again.

🟡 Soft Bounce

Temporary failure — mailbox full, server busy, quota exceeded. Counted per address and suppressed once your soft threshold is reached (3 by default).

⚪ IP Block

Your sending IP was blocklisted. The address is valid — the rejection was about you, not them. Logged separately, never suppressed.

🟣 Spam Reject

Your message was refused as spam by the receiving server. Valid address, reputation or content issue. Recorded for review, never suppressed.

How It Works

Up and running the same day

Drop the module on your server, connect a bounce mailbox, and let cron keep your list clean.

1

Upload & configure

Upload the CW folder and open the setup wizard. Enter your database details and choose an admin password. Tables and default patterns are created for you.

2

Add your accounts

Under Settings, add your IMAP bounce mailbox. Test the connection with one click to confirm it works.

3

Add the cron job

Cron scans every few minutes and drains the whole backlog each run. You can also scan on demand with live progress.

4

Suppress & export

Dead addresses are suppressed automatically. Export the list as CSV for any mailer, or let Mail Engine and Audience Manager use it directly.

Technical Requirements

Runs on standard hosting

Works on any server running PHP with the IMAP extension, and MySQL/MariaDB.

📬 Connects to anything reachable over standard IMAP — Gmail, Microsoft 365, Postfix, Dovecot — and reads any RFC 3464–compliant delivery status notification. It does not need Mail Engine: use it with MailWizz, phpList, Acelle or any other sender.

  • PHP 8.1, 8.2, or 8.3
  • php-imap extension
  • MariaDB 10.3+ or MySQL 8+
  • Apache or Nginx web server
  • IMAP access to your bounce mailbox(es)
  • Cron access (every 5–15 minutes)
  • Works on VPS, dedicated and most shared hosting
  • Setup wizard — no config files to edit
  • Lightweight self-hosted application
  • No framework, no Composer, no monthly fees
  • Full source code included
// Install in four steps // 1. Upload the CW/ folder to public_html/ // 2. Open /CW/admin/setup.php, enter DB credentials // and choose an admin password // 3. Log in, click Bounce Manager, add an IMAP account // 4. Add the cron command shown in Settings
Pricing

One price. Forever yours.

No subscriptions. No seat limits. No usage caps. Pay once, use on as many of your own servers as you need.

Complete Package
€49
one-time payment · instant download
  • Bounce Manager module — full source
  • Pattern library, thresholds & audit log
  • DMARC report reader
  • CSV export of the suppression list
  • Installation guide (Nginx + Apache)
  • User manual with examples
  • Unlimited IMAP accounts
  • Unlimited domains & mailboxes
  • All future updates included
  • Email support for 6 months
Buy Now — €49 →

Secure payment via Stripe · Instant delivery · VAT may apply

Want the whole system? The Full Suite — all 6 modules for €196 →

What this would cost elsewhere

€30–300/month
List hygiene add-ons
in hosted platforms
vs.
€49 once
CloudWizard
Bounce Manager, forever
Who is this for?

If you self-host email, this is for you

📨 MailWizz users
📋 phpList users
✉️ Acelle Mail users
🖥️ Self-hosted email marketers
🏢 Hosting providers
⚙️ VPS operators

See it in action

Explore a live demo with pre-loaded bounce data — no login required.

👀 Open Live Demo →
FAQ

Common questions

No. Bounce Manager works on its own with any mailer that sends bounces to an IMAP mailbox. Export the suppression list as CSV for your sender, or install Mail Engine and Audience Manager and they use the same list automatically.

It removes only messages it has processed as bounces, and the mailbox is meant as a transient inbox for them, ideally a dedicated address or folder. Auto-replies and out-of-office messages are skipped by your pattern rules. The classified result is kept in Bounce Manager's own list.

No. A refusal such as "550 spam message rejected", a 5.7.x policy code, or a block or DMARC message is logged as Spam Reject or IP Block and the address stays on your list. Only dead-address bounces and repeated soft bounces suppress an address.

Any IMAP-accessible mailbox — Postfix/Dovecot, Gmail, Outlook/Exchange, Yahoo and most other providers. STARTTLS, SSL/TLS or plain on localhost are supported. If you can connect via IMAP in a mail client, it will work here.

Scanning runs in chunks with a live progress bar, and each cron run drains an account's whole backlog, so a large bounce spike is caught up in one run.

Big providers send a daily summary of all mail received in your domain's name and whether it passed DKIM and SPF. Bounce Manager reads them from a separate mailbox and shows pass and fail per provider and sending server, so you can find why mail lands in spam or spot someone forging your domain.

Your data never leaves your server. IMAP credentials are stored in your own database, and the installation guide covers restricting admin access.

Yes — a single purchase covers all your own servers and projects. There are no per-domain or per-server restrictions. The license covers personal and commercial use on servers you own or operate.

You get the full source code — so you can modify anything. For common feature requests, updates are free and included. Send us a message and we will see what we can do.

Designed by someone who has run customer databases and direct mail since the late 1980s.

Not because it's old-school, but because anyone who has actually run a mailing list knows the hard part isn't sending — it's keeping the list clean and your sender reputation healthy over time. That's the problem this tool is built to solve.

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