Fastmail vs Zenzap
Compare Fastmail and Zenzap on features, pricing, and buyer fit using the same researched criteria.

Fastmail
Privacy-focused business email, calendar and contacts with custom domains and shared addresses — Business Basic from $3/user/month annual; adjacent to business communications, not a phone system.
Best for
- • Small teams that want private, independent business email on their own domain
- • Owner-operators who need shared support@ addresses and shared calendars cheaply
- • Buyers who need an email retention archive for legal compliance (Professional)
Starting from $3.00/user/mo
No free plan
VS
Our verdict
No universal winner. Choose based on which criteria matter most for your team.
Zenzap is better for
- ✓ Analytics
- ✓ AI features
Tie
- • Number / country coverage
- • Power dialer
- • WhatsApp Business
Choose Fastmail if: Small teams that want private, independent business email on their own domain
Choose Zenzap if: Frontline, multi-site and shift-based teams replacing personal WhatsApp groups

Zenzap
Professional work-chat app for frontline and multi-site teams replacing WhatsApp groups — free tier, Pro $3/user/month yearly, Business+ $8 with HIPAA, integrations and AI agents.
Best for
- • Frontline, multi-site and shift-based teams replacing personal WhatsApp groups
- • Regulated operators (healthcare, care providers) needing HIPAA compliance with a signed BAA
- • Owner-operators who want structured team chat with tasks at a very low per-user price
Starting from $3.00/user/mo
Free plan available
Fastmail vs Zenzap pricing
Fastmail researched starting price from $3/mo. Zenzap researched starting price from $3/mo; a free plan is researched. Affiliate economics excluded.
Fastmail
From $3.00/user/mo
Zenzap
From $3.00/user/mo
Fastmail
Starting from $3.00/user/mo
Free trial available
- Business Basic$3.00/user/mo
- $3/user/month billed annually ($4 monthly; $36 for 12 months). 5 GB for mail, calendar and contacts plus 1 GB file storage, custom business addresses on your domain, 24/7 human support.
- mail storage gb: 5
- file storage gb: 1
- Business StandardPopular$5.00/user/mo
- $5/user/month billed annually ($6 monthly; $60 for 12 months). 50 GB mail plus 10 GB files, shared email addresses like support@, layered shared calendars, shared company address book, offline support, scheduled send and snooze.
- mail storage gb: 50
- file storage gb: 10
- Business Professional$9.00/user/mo
- $9/user/month billed annually ($10 monthly; $108 for 12 months). 100 GB mail plus 50 GB files and an email retention archive for legal compliance.
- mail storage gb: 100
- file storage gb: 50
- Individual$5.00/mo
- $5/month billed annually ($6 monthly; $60 for 12 months) for a single mailbox with premium email, calendar and contacts.
- mail storage gb: 50
- file storage gb: 10
Zenzap
Starting from $3.00/user/mo
No free trial evidenced
- Free$0.00/user/mo
- $0 — unlimited group chats, unlimited built-in to-dos, scheduled messages, calendar integration, working hours and notifications, team access and permissions, 1 GB secure storage, WhatsApp chat migration, AI voice-note transcription and AI in-chat search.
- storage gb: 1
- group chats: unlimited
- whatsapp migration: true
- Pro$3.00/user/mo
- $3/user/month billed yearly ($4 monthly). Voice and video calls, task checklist templates, sub-task breakdown, smart task sorting, team privacy settings, media sharing controls, malware scanning, 100 GB storage, AI workspace search and message-to-task AI.
- storage gb: 100
- flat rate yearly up to20 users: 51
- flat rate yearly up to50 users: 112
- Business+Popular$8.00/user/mo
- $8/user/month billed yearly ($10 monthly). Integrations with other business tools, API access, HIPAA compliance with signed BAA, enhanced privacy controls, call recording and transcription, data archiving, 10 TB storage, priority support, a personal AI agent per user and unlimited custom/internal AI agents.
- storage tb: 10
- flat rate yearly up to20 users: 89
- flat rate yearly up to50 users: 190
- EnterpriseCustom
- Custom: custom integrations, organisation chart, SAML/SCIM/SSO, encryption key management, audit logs, 24/7 enterprise CSM, tailored onboarding, custom and privately deployed AI agents.
Estimate your team cost
Monthly estimate from verified per-seat list pricing. Confirm on the vendor site before purchasing.
Fastmail
$45.00/mo
Zenzap
$45.00/mo
Similar estimated cost
Verified monthly unit prices · Aug 17, 2026
Prices in USD
Shown per user / month from verified list pricing.
Plans can change
Confirm live vendor rates before purchasing.
Add-ons may apply
Calling, SMS, or usage fees can add cost.
Independence
Affiliate status never changes pricing outcomes.
Some visit links may be affiliate links — we may earn a commission at no extra cost to you. Comparison outcomes are never based on commission.