Puzzle Inbox
Pre-warmed Google WorkspaceMicrosoft 365
Pre-warmed GWS + M365; also runs a large provider-owned comparison hub
IP model
Unknown · US
Turnaround
Instant (pre-warmed)
Pre-warmed
Available
API access
—
No public pricing
$0.35/mb/mo listed on ColdEmailKit — likely promotional, RE-CHECK
Replacements — self-healing replacement
Ratings sourced
Trustpilot 4.2(31)
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WarmPilot — automated inbox warmup
Warm up unlimited Google & Outlook inboxes to 99% inbox placement. warmpilot.io