OutPumperThe arsenal
The full outbound engine, inside Outlook.
Every feature is built to run from the inbox you already use. No external servers, no separate tools, no extra infrastructure to manage.
Campaign management
Run campaigns like a system.
Multi-step sequences
Day two follow-up, day five nudge, day ten close. Set it once and let it run, with per-contact tracking at every step.
Drop in any list
CSV in, emails out. Any columns you like. No mapping wizard and no long setup.
Queue campaigns
Stack campaigns, run them in sequence, and pause or resume whenever you want. Progress is always saved.
Crash-proof
Close Outlook, restart, or lose connection. OutPumper picks up exactly where it left off.
Full contact status
Sent, pending, skipped, failed. Complete visibility at every step, without spreadsheets.
Sending intelligence
Sends the way a person would.
Throttling that works
Speeds up when it can, slows down when it should, and stops before Microsoft notices. Your account stays clean.
Natural sending waves
Sends in organic waves rather than a flat fire hose, the way a real person emails across a day.
Gradual warm start
Starts slow and ramps up at the beginning of each campaign, because that is what natural sending looks like.
Multi-account rotation
Rotates across user accounts automatically, each with its own sending window, for safe throughput.
Deliverability and safety
Built to protect your domain.
Domain spreading
Never hammers the same recipient domain in a row. Sends are spread so nothing looks like a spike.
Automatic stop
Approaching a Microsoft limit triggers an automatic stop, before anything goes wrong, then resumes when limits reset.
Outbox monitoring
Watches your outbox in real time and pauses if anything backs up. No stuck mail, no overflow.
Self-healing recovery
A stuck send is detected, fixed, and resumed automatically, so campaigns run without babysitting.
Content and personalization
Every email a little different.
Word variation engine
Rewrites subject lines and body copy so no two emails are identical, which keeps spam filters from pattern-matching.
48 templates
Across ten categories: intros, follow-ups, value props, social proof. Tested and ready to adapt.
A/B testing
Test subject lines, body copy, or both, track which version earns replies, and scale the winner.
Rich HTML emails
Import formatted templates with full HTML and images, so your emails look as professional as they read.
Mailbox management and providers
One dashboard, every sender.
Auto-detect mailboxes
Finds your user and shared mailboxes automatically. No manual configuration, no admin-panel hunting.
Automatic rotation
Cycles through shared mailboxes on its own, in randomized order, so sending stays natural.
External providers
Connect Google Workspace, SendGrid, Mailgun, Amazon SES, or any SMTP server, managed from inside Outlook.
What it replaces
Tools other senders pay for, included.
Free email verification
Every address is verified before it is sent to, built into the engine. Unlimited, at no extra cost.
Warmup tools and extra domains
Send on day one from real Microsoft 365 mailboxes. No warmup subscription, no 30 to 50 throwaway domains to buy and manage.
Bounce intelligence
A bounced address is blacklisted across every campaign automatically, so your sends get cleaner over time.
Ready to send from your own Outlook?
Every feature above, in one Outlook add-in. Try it free for seven days.