Deliverability, warmup and bounce protection

What runs automatically

• Warmup ramps a new inbox up gradually instead of blasting from day one.
• Daily caps are warmup-aware: each inbox has a ceiling that grows as it earns trust.
• Bounce detection reads your mailbox over IMAP and marks dead addresses.
• Suppression stops those addresses being emailed again, across every campaign.
• Auto-pause stops an inbox before a bad list can damage its reputation.
• Spam hints flag risky wording while you write.

What you should still do

• Set up SPF, DKIM and DMARC on your sending domain.
• Verify addresses before you enroll them.
• Spread volume across several inboxes rather than pushing one hard.
• Keep sequences short and genuinely relevant, nothing recovers a list you burned.

Each inbox carries a 0–100 health score built from today's sends against its cap, plus 14 days of delivered, failed and opened counts.