InboxClean vs ContactZapp

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

InboxClean compared with ContactZapp
Detail	InboxClean	ContactZapp
What it does	Clean your Gmail inbox in 60 seconds by unsubscribing from spam and newsletters with one click	Sync your contacts between Google, Microsoft, Apple and CardDAV. Find and merge duplicates easily.
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Freemium	Freemium
Pricing	Free: 10 unsubscribes per week, scan up to 1000 emails, basic spam report, Gmail only. Pro: $5 per month with unlimited unsubscribes, spam score for every sender, Inbox Shield, weekly auto-clean, and priority support.	Free plan: 2 synced accounts, 100 contacts, no time limit. Easy plan: $4.00/month (billed $47.94/year, was $95.88). Unlimited plan: $8.00/month (billed $95.94/year, was $191.88). 50% off Easy and Unlimited with code HALLOWEEN.
Key features	Scan last 1,000 emails for subscriptions and newsletters One-click unsubscribe from unwanted senders Weekly automatic cleaning Auto-unsubscribe from new spam senders Spam score for every sender Inbox Shield to block senders forever Basic spam report	Two-way sync across Google, Microsoft, Apple and CardDAV Merge duplicates in one go, or review them one by one Full change history with undo capability Backups and vCard export Sync frequency control (hourly, daily, or manual) Set accounts to read-only mode Preserve all phone numbers and email addresses Up to 5 encrypted account backups 12-month undo history Restore deleted contacts for 12 months
What makes it different	60-second setup to clean inbox Fully automatic weekly cleaning with no effort required Free plan available with no credit card required Headers only access, emails never read or sold	Syncs across all major platforms in both directions automatically Encrypted contacts with privacy key per account Undo any change for up to 12 months No time limit on free plan Automatic duplicate detection and optional auto-merge
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	1 no change since last check	Not checked yet no change since last check
Trust Flow (Majestic)	3	0
Citation Flow (Majestic)	19	11
Referring domains (Majestic)	7	1

5 details filled in for both companies.

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