Fastmail vs Grasshopper
Compare Fastmail and Grasshopper 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.
Grasshopper is better for
- ✓ Number / country coverage
- ✓ Power dialer
- ✓ Routing & IVR
- ✓ Analytics
Tie
- • WhatsApp Business
- • CRM / CTI integrations
Choose Fastmail if: Small teams that want private, independent business email on their own domain
Choose Grasshopper if: Solo operators and tiny teams that primarily need a professional virtual number

Grasshopper
SMB virtual business numbers with extensions and apps — True Solo from $14/month annual (flat account, not per seat).
Best for
- • Solo operators and tiny teams that primarily need a professional virtual number
- • SMBs that want flat account pricing instead of per-seat UCaaS maths
- • Buyers replacing a personal mobile with a branded business line
Starting from $14.00/user/mo
No free plan
Comparison scorecard
Criterion-by-criterion results for Fastmail and Grasshopper. Numeric bars appear only when both products have approved scores.
- Depends
Starting pricing
Published floor price and what that floor actually includes.
Fastmail researched starting price from $3/mo; Grasshopper researched starting price from $14/mo. Better value depends on seat minimums and add-ons.
FastmailDependsGrasshopperDepends - Depends
User / licence minimum
Seat floors, per-employee minimums, and small-team pricing traps.
Check seat or licence minimums for Fastmail and Grasshopper on current vendor packaging — not inferred beyond researched pricing notes.
FastmailDependsGrasshopperDepends - Grasshopper
Number / country coverage
Published local numbers and country coverage.
Stronger cloud phone availability
FastmailWeakerGrasshopperStronger - Grasshopper
Power dialer
Power or parallel dialing for outbound teams.
Grasshopper leads on power dialer (2/10 vs 4/10) from approved SoftwareGlimpse editorial assessments — not hands-on lab testing.
FastmailWeakerGrasshopperStronger - Tie
WhatsApp Business
WhatsApp Business API / BSP capability.
Fastmail and Grasshopper have the same researched availability on whatsapp business (Fastmail: not-supported; Grasshopper: not-supported).
FastmailTieGrasshopperTie - Tie
CRM / CTI integrations
CRM click-to-call, logging, and CTI depth.
Fastmail and Grasshopper are close on crm integrations (5/10 vs 5/10) from approved SoftwareGlimpse editorial assessments — not hands-on lab testing.
FastmailTieGrasshopperTie - Grasshopper
Routing & IVR
Call routing, IVR, queues, and skills-based assignment.
Grasshopper leads on routing (5/10 vs 6/10) from approved SoftwareGlimpse editorial assessments — not hands-on lab testing.
FastmailWeakerGrasshopperStronger - Grasshopper
Analytics
Campaign, conversation, or workforce reporting depth.
Grasshopper leads on analytics (2/10 vs 5/10) from approved SoftwareGlimpse editorial assessments — not hands-on lab testing.
Fastmail2/10Grasshopper5/10 - Grasshopper
AI features
Useful AI for the primary job — not marketing fluff.
Grasshopper leads on ai features (2/10 vs 6/10) from approved SoftwareGlimpse editorial assessments — not hands-on lab testing.
Fastmail2/10Grasshopper6/10
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