Land in the primary inbox, every time.

• 01

  New sending domains land in spam for the first 4–6 weeks unless they are warmed up properly. Inbox providers treat new domains with suspicion. Without a gradual warmup that builds sending reputation, your first 500 emails will land in spam — and recovery takes months.

• 02

  Free warmup tools cap volume and lack reputation monitoring. Most free tools warm up 50-100 emails per day and provide no visibility into inbox placement. You're warming up blind, hoping it works, and discovering the damage only after a campaign fails.

• 03

  Spam complaints spike silently when reply rates drop — by the time you notice, the domain is burned. A sudden drop in reply rates often signals deliverability problems, but most teams don't monitor this closely. By the time the issue is visible, the domain needs weeks of recovery.

• 04

  Multiple SDRs sharing one domain kills deliverability for the whole team. When 5 SDRs send from the same domain, the combined volume triggers spam filters. One bad campaign from one SDR damages reputation for everyone.

• 05

  There is no visibility into inbox placement across Gmail, Outlook and corporate filters. Your emails might land in the inbox at Gmail but go to spam at Outlook. Without cross-provider testing, you're optimizing for one inbox while ignoring the rest.

Read the full head-to-head: SpaceCRM vs 7 Best Instantly.ai Alternatives in 2026 (Free & Paid).