InboxPlan

Web

Freedom report

One barScore 5.0

Free tierNo free tier on record
Open codeNo open-source code on record
Runs widely1 of 6 device platforms
DocumentedPlans, terms and facts published

InboxPlan is ranked #12 of 24 in email warmup software on Freedom251. It runs on Web. There is no free plan. A free trial is offered.

Compared on email warmup software

Free plan: No
Warmup network: private
Custom warmup schedule: Yes
Spam monitoring: Yes
Multiple mailboxes: Yes

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The record

Purpose: InboxPlan offers automated email warm-up, smart scheduling, and deliverability analytics.
AI warm-up: Its AI generates unique warm-up emails and coherent conversation threads tailored to the user's industry.
Reply simulation: The service simulates two-way AI conversations to create engagement signals.
Deliverability monitoring: A live health monitor tracks sender score, inbox placement, and spam rates across major providers.
Seed network: InboxPlan says it has a private network of 500+ verified seed inboxes.
Scheduling: It randomizes send windows and automatically ramps up sending volume; users can also set manual limits per account.
Integrations: The site says users can connect Gmail, Outlook, Zoho, or custom SMTP accounts.
Account security: InboxPlan says it uses standard OAuth and does not store users' passwords.
Setup: The site says setup takes under two minutes.
Warm-up volume: InboxPlan says it typically starts at 3–5 emails per day in week one and scales to 30–50 per day by week four.
Multi-account support: Users can connect multiple accounts, with each account getting its own warm-up threads, send schedule, and reputation dashboard, subject to the plan.
Intended users: The homepage names sales teams, agencies, and startups, and lists SaaS, recruiting, real estate, finance, and e-commerce businesses among its audiences.
AI conversations: Its AI generates unique, human-like business conversations for warm-up threads.
Health monitoring: The live health monitor tracks sender score, inbox placement, and spam rates across major providers.

Where it ranks on Freedom251

Best Email Warmup Software in 2026#12 of 24

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Sources

inboxplan.com· checked 3 Oct 2026
inboxplan.com/email-warmup· checked 28 Sept 2026