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
Fastmail vs Grasshopper at a glance
Criterion-level leaders from verified research.
Scorecard preview
Criterion leaders based on verified research — open the Scorecard tab for evidence detail.
- Starting pricingDepends
Fastmail
Grasshopper
- User / licence minimumDepends
Fastmail
Grasshopper
- Number / country coverageGrasshopper
Fastmail
Grasshopper
- Power dialerGrasshopper
Fastmail
Grasshopper
- WhatsApp BusinessTie
Fastmail
Grasshopper
Which business communications is better for you?
Quick picks based on fit — not a universal ranking.
- → Grasshopper
Best for number / country coverage
Stronger cloud phone availability
- → Grasshopper
Best for power dialer
Grasshopper leads on power dialer (2/10 vs 4/10) from approved SoftwareGlimpse editorial assessments — not hands-on lab testing.
- → Grasshopper
Best for routing & ivr
Grasshopper leads on routing (5/10 vs 6/10) from approved SoftwareGlimpse editorial assessments — not hands-on lab testing.
The biggest differences
Where the products diverge most clearly on verified criteria.
Starting pricing
DependsFastmail
Fastmail researched starting price from $3/mo; Grasshopper researched starting price from $14/mo. Better value depends on seat minimums and add-ons.
Grasshopper
Fastmail researched starting price from $3/mo; Grasshopper researched starting price from $14/mo. Better value depends on seat minimums and add-ons.
WhatsApp Business
TieFastmail
Fastmail and Grasshopper have the same researched availability on whatsapp business (Fastmail: not-supported; Grasshopper: not-supported).
Grasshopper
Fastmail and Grasshopper have the same researched availability on whatsapp business (Fastmail: not-supported; Grasshopper: not-supported).
Power dialer
Grasshopper winsFastmail
Trails Grasshopper on this criterion
Grasshopper
Grasshopper leads on power dialer (2/10 vs 4/10) from approved SoftwareGlimpse editorial assessments — not hands-on lab testing.
Routing & IVR
Grasshopper winsFastmail
Trails Grasshopper on this criterion
Grasshopper
Grasshopper leads on routing (5/10 vs 6/10) from approved SoftwareGlimpse editorial assessments — not hands-on lab testing.
CRM / CTI integrations
TieFastmail
Fastmail and Grasshopper are close on crm integrations (5/10 vs 5/10) from approved SoftwareGlimpse editorial assessments — not hands-on lab testing.
Grasshopper
Fastmail and Grasshopper are close on crm integrations (5/10 vs 5/10) from approved SoftwareGlimpse editorial assessments — not hands-on lab testing.
Which should you choose?
Choose Fastmail if
- 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)
Choose Grasshopper if
- 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
Related comparisons
Alternatives to consider
SaneBox
Per-person email triage that filters existing mailboxes into SaneLater/SaneBlackHole folders — Snack, Lunch and Dinner tiers with 1, 2 and 4 mailbox caps; adjacent to business communications.
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.
OpenPhone
Modern SMB shared business phone (also branded Quo) with shared numbers, SMS and Sona AI — Starter from $15/user/month annual.
CallHippo
SMB cloud phone system with a $0 starter rung, Starter from $18/user/month annual (2-user minimum), call recording and IVR from Professional, plus a separate call-centre plan ladder.
How we compare
A short look at the comparison process. Full methodology
1
Collect
Collect official product information, pricing, and product evidence.
2
Normalize
Map evidence to the same category evaluation criteria for both products.
3
Compare
Evaluate both products against identical criteria — ties and depends are allowed.
4
Explain
Show why each product wins, loses, or ties, with evidence behind the outcome.
Still deciding between Fastmail and Grasshopper?
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- Independent criterion outcomes
- No invented scores or prices
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