Email channel
OAuth + SMTP + bulk-onboarding + 21-day warmup + DMARC monitoring.
- ·OAuth (Google / Microsoft) + SMTP / IMAP fallback
- ·Bulk-onboard 50–100 mailboxes in 60 seconds
- ·21-day sigmoid warmup ramp on every new mailbox
- ·DMARC + SPF + DKIM monitor with one-click fixes
- ·Inbox-placement seed tests vs. Gmail / Outlook / Yahoo
- ·RFC 8058 one-click unsubscribe header — auto-injected
Why most cold email lands in spam
Gmail, Yahoo, and Microsoft tightened the floor in 2024 — DMARC enforcement, one-click unsubscribe, 0.3% spam-rate cap. Most outbound tools still treat your mailbox like a firehose. The result: looks like you sent, never lands.
- Reply rate dropped below 1% on identical copy that worked last quarter
- Same email lands in inbox on test send, spam at scale
- Mailboxes get suspended without warning by the provider
- DMARC report files arrive but nobody reads them
The detail.
Every mailbox is a budget — not a firehose
Per-mailbox daily and hourly caps, min-gap-between-sends, quiet hours in the recipient's local timezone, and an auto-pause when the bounce rate crosses 2.5% in a rolling window. One bad campaign on one mailbox can never drag down the rest of your reputation.
Bulk onboarding, the way you wish it worked
Paste 100 SMTP credentials, the wizard validates them in parallel, auto-detects the provider, registers each mailbox, runs DNS health checks against every unique sending domain, and starts the warmup ramp. End-to-end in under a minute.
Deliverability proof, not promises
Inbox-placement seed tests run weekly against monitored mailboxes on Gmail, Outlook, and Yahoo. You see the actual placement (inbox, promotions, spam, missing) — not just the 250 OK from the SMTP server.
Bring your own — or pick from the supported set.
The rules that keep your account alive.
Every rule below is enforced before any outbound action. The compliance gate either passes or it doesn’t dispatch.
- 21-day sigmoid warmup before scaleWhy: Linear ramps trip Gmail's behavioural classifier; sigmoid mimics organic growth.
- Auto-pause at 2.5% bounce rate (rolling 7d)Why: Provider tolerance is 5%; pausing at half buys time to fix the list.
- DKIM key rotation reminder every 90 daysWhy: Rotated keys signal an actively managed sender; stale keys are a soft suspicion signal.
- Quiet hours enforced in recipient's timezoneWhy: 3 AM mail is a strong spam signal — even from a known good sender.
- One-click unsubscribe header (RFC 8058)Why: Required by Gmail/Yahoo bulk-sender rules from 2024; not optional.
A real sequence using this channel — day by day.
- Day 0Cold email — pitch v3Personalised opener · merge tags from Leads custom fields
- Day 2Open-no-reply follow-upBranches only if email_event.opened == true
- Day 5Soft nudgeDifferent angle — case study or lower-friction CTA
- Day 9Breakup email'Last note from me' framing; high reply rate when used sparingly
- Day 14Re-engage 30d laterAuto-snoozed; surfaces if no reply across the sequence
“We onboarded 100 mailboxes in 90 seconds. Two weeks in, our reply rate had doubled and our domain reputation was higher than before we started cold mailing.”
Specific to this channel.
Will my Gmail / M365 account get suspended?+
No, provided you stay under the per-mailbox limits Autocloz enforces by default (40 sends/day on a fresh mailbox; ramp up over 21 days). The system will auto-pause well before any provider would flag you.
Do I need separate sending domains for cold email?+
Best practice yes — keep your primary domain (yourcompany.com) for transactional and use a near-domain (yourcompany.io / .net / -mail.com) for cold. Autocloz monitors all of them under the same workspace.
Can I import my existing sequences?+
Yes — JSON import for sequences, CSV import for leads. The first-run wizard walks you through both.
What about CAN-SPAM / GDPR?+
RFC 8058 one-click unsubscribe is auto-injected; DNC tracking is built in; physical address line auto-renders from your org settings. GDPR-friendly out of the box.