Today's Activity
Sent Today
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Replies Today
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Delivered
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—% rate
Bounced
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—% rate
All Time
Total Sent
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— replies received
Open Rate
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Reply Rate
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Accounts
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active senders
Accounts to Use
0 mailbox(es) selected · ~0/day
Spintax Preview — test your {variations|before|sending}
Upload Leads CSV
Columns: email, first_name, last_name, company, title, website
Role accounts, disposables & invalid domains auto-filtered
Daily Sending Limit per Account
Max 30/account/day recommended
Sending Hours
Emails only send within these hours in the selected timezone — great for landing during the recipient's business hours.
Stop on Reply
Instantly pause sequence when lead replies
Plain Text Only
Force all steps to send as plain text
Track Opens
Invisible pixel for step 2+ only
Track Links
Wrap links to record clicks
Add Unsubscribe
Opt-out link + List-Unsubscribe header
Verify Emails on Import
Drop undeliverable via SES before sending
Sending Gap (minutes)
Delay between emails per account
Sending Days
Add Lead Manually
| Name | Company | Status | Campaign | Added | |||
|---|---|---|---|---|---|---|---|
| Loading leads... | |||||||
Sender Accounts
New Sender Account
- or add manually below -
Paste one account per line: email,app_password,Display Name (name optional). Uses Microsoft 365 (smtp.office365.com:587 · IMAP outlook.office365.com:993). Make sure Authenticated SMTP is enabled for each mailbox in the M365 admin center.
Suppression List
| Reason | Added | ||
|---|---|---|---|
| Loading... | |||
Agents
Real-time validation on our own engine — no third-party API. SMTP mailbox probe, catch-all detection, MX/DNS, disposable & role, plus send-history ground truth.
Verify emails programmatically with the same engine. Generate a key, then call the endpoint below. Keep keys secret; revoke any time.
API Keys
POST https://sendburg-marketing.com/api/v1/verifyX-API-Key: YOUR_API_KEYcurl -X POST https://sendburg-marketing.com/api/v1/verify \
-H "X-API-Key: YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{"email":"jane@example.com"}'{
"email": "jane@example.com",
"status": "valid",
"reason": "Mailbox confirmed to exist (live SMTP RCPT)",
"confidence": "HIGH",
"score": 96,
"checks": { "syntax":"HIGH", "dns":"HIGH", "mailbox":"HIGH", "role":"LOW", "disposable":"LOW" }
}Drop your CSV here or click to browse
Any column — up to 50,000 addresses per file
Verification Jobs
No jobs yet. Upload a CSV to start.
| Status | Confidence | Syntax | DNS | Mailbox | Role | Disposable | Source | Reason |
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