Your relays, encrypted.
AES-256-GCM at rest. Row-level security on every read. Test any SMTP with an AI-verified probe before you send.
Live campaign
ActiveAI generation
Generating personalized subject line for segment “SaaS founders”…
Every invoice gets a unique 4-decimal suffix — pay on-chain and we auto-verify.
AI content & subjects
Generate persuasive HTML, subject lines, and spam analysis in one click.
Real-time bulk sending
Emails dispatched one by one via your SMTPs with delivery streamed live.
Encrypted SMTP vault
AES-256-GCM stored credentials, gated by row-level security.
USDT crypto billing
Pay in USDT (TRC20 / ERC20). 4-decimal suffix auto-verifies on-chain.
Lists + validation
Import huge lists, dedupe automatically, filter invalid recipients.
Admin control
Plans, wallets, users, revenue splits and campaign audits — all in one place.
Simple crypto pricing.
Pay monthly in USDT. Cancel anytime — no recurring billing.
Run BulkMailer in its own window.
The BulkMailer desktop app wraps your live workspace in a native window — campaigns, SMTP vault, AI content and real-time delivery, with an offline reconnect screen when your network drops.
Detecting your device…
Remembered window size, native menus, and no browser tabs competing with a running campaign.
Lose connection mid-session and you get a branded reconnect screen that retries automatically instead of a dead page.
Your SMTPs stay AES-256 encrypted server-side. The desktop app signs in to the exact same workspace as the web app.
For Windows 10 and 11 on 64-bit Intel or AMD processors.
- 1Download the .zip and extract it to a folder you keep, such as Documents or Program Files.
- 2Open the folder and double-click BulkMailer.exe.
- 3The build is unsigned, so SmartScreen may appear — click More info, then Run anyway.
- 4Sign in with your BulkMailer account and start sending.
- Installer or portable ZIP — which one?
- Take the installer (MSI on Windows, DMG on macOS). It puts BulkMailer in the right place, adds shortcuts, registers a clean uninstaller and keeps the app up to date automatically. The ZIP stays available if you need a portable copy or cannot run installers.
- Does the app update itself?
- Yes. Installer builds check for new versions in the background, download them silently and offer a Restart to update banner — you never re-download a ZIP again.
- Why does my computer warn me about the app?
- Only unsigned portable ZIP builds trigger Windows SmartScreen or macOS Gatekeeper. Signed installer releases open straight away with no Run anyway or right-click Open step.
- What is the tray icon for?
- BulkMailer keeps a menu bar or notification area icon while it runs, so you can reopen the window, see live sending status, pause every active campaign, or quit — without switching to the app first.
- Do I still need my own SMTP servers?
- Yes — BulkMailer sends through the SMTP relays you add or buy in the marketplace. The desktop app uses the same encrypted SMTP vault as the web app.
- Does it work offline?
- Sending and AI features need the internet. If your connection drops, the app shows a reconnect screen and returns to your workspace as soon as you are back online.
- Which Mac build should I pick?
- Apple menu, then About This Mac. If the chip line says Apple M1 to M4, take the Apple Silicon build. If it says Intel, take the Intel build.
Questions, answered.
How much does BulkMailer cost?
Plans run from $9.99 to $99.99 per month. The $99.99 Enterprise tier is discounted 60%, so you pay 40.00 USDT. Every plan is month-to-month with no recurring billing.
How do I pay — do you accept cards?
Billing is in USDT (TRC20 or ERC20). Each invoice gets a unique 4-decimal amount, so your on-chain payment is matched and your plan activates automatically once the transaction confirms.
How many emails and SMTPs do I get?
Tiers scale from 500,000 emails and 10 SMTP servers on the $9.99 plan up to 10,000,000 emails and unlimited SMTP servers on the $99.99 plan.
How many addresses can I sort?
Free accounts sort 500 addresses. Paid tiers scale from 200,000 up to unlimited sorting on Enterprise.
Do you provide the sending servers?
You connect your own SMTP servers, and credentials are encrypted at rest. You can also buy vetted SMTPs from the in-app marketplace using wallet credit.
Can AI write my campaigns?
Yes. BulkMailer generates subject lines, professional HTML bodies and campaign ideas from a short description, and can run a spam check that rewrites risky copy for you.
Is there a desktop app?
Yes — signed installers are available for Windows and macOS, with system tray controls, sending notifications and automatic updates.