SoftwareGlimpse

Fastmail vs Microsoft Teams

Compare Fastmail and Microsoft Teams on features, pricing, and buyer fit using the same researched criteria.

Independently recommendedLast updated Aug 18, 20267 evidence sources9 screenshotsHow we compare

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Fastmail

4.8/10

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

No universal winner. Choose based on which criteria matter most for your team.

Microsoft Teams is better for

✓ Number / country coverage
✓ Power dialer
✓ CRM / CTI integrations
✓ Analytics

Tie

• WhatsApp Business
• Routing & IVR

Choose Fastmail if: Small teams that want private, independent business email on their own domain

Choose Microsoft Teams if: Organisations standardised on Microsoft 365 that need chat and meetings as the collaboration hub

See detailed comparison ↓

Microsoft Teams

7.3/10

M365 collaboration hub (chat, meetings, files) with optional Teams Phone telephony add-on — free Teams tier exists; Phone Standard ~$10/user/month annual plus PSTN.

Best for

• Organisations standardised on Microsoft 365 that need chat and meetings as the collaboration hub
• Enterprises that may add Teams Phone later for PSTN without changing collaboration vendors
• IT-led rollouts that prioritise identity, compliance and app ecosystem over dialer features

Starting from $0.00/user/mo

Free plan available

Visit Microsoft Teams

Fastmail vs Microsoft Teams at a glance

Criterion-level leaders from verified research.

Full scorecard →

Scorecard preview

Criterion leaders based on verified research — open the Scorecard tab for evidence detail.

Starting pricingDepends
Fastmail
Microsoft Teams
User / licence minimumDepends
Fastmail
Microsoft Teams
Number / country coverageMicrosoft Teams
Fastmail
Microsoft Teams
Power dialerMicrosoft Teams
Fastmail
Microsoft Teams
WhatsApp BusinessTie
Fastmail
Microsoft Teams

Which business communications is better for you?

Quick picks based on fit — not a universal ranking.

→ Microsoft Teams
Best for number / country coverage
Stronger cloud phone availability
→ Microsoft Teams
Best for power dialer
Microsoft Teams leads on power dialer (2/10 vs 3/10) from approved SoftwareGlimpse editorial assessments — not hands-on lab testing.
→ Microsoft Teams
Best for crm / cti integrations
Microsoft Teams leads on crm integrations (5/10 vs 10/10) from approved SoftwareGlimpse editorial assessments — not hands-on lab testing.

The biggest differences

Where the products diverge most clearly on verified criteria.

Starting pricing
Depends
Fastmail
Fastmail researched starting price from $3/mo; Microsoft Teams researched starting price from $0/mo; a free plan is researched. Better value depends on seat minimums and add-ons.
Microsoft Teams
Fastmail researched starting price from $3/mo; Microsoft Teams researched starting price from $0/mo; a free plan is researched. Better value depends on seat minimums and add-ons.
WhatsApp Business
Tie
Fastmail
Fastmail and Microsoft Teams have the same researched availability on whatsapp business (Fastmail: not-supported; Microsoft Teams: not-supported).
Microsoft Teams
Fastmail and Microsoft Teams have the same researched availability on whatsapp business (Fastmail: not-supported; Microsoft Teams: not-supported).
Power dialer
Microsoft Teams wins
Fastmail
Trails Microsoft Teams on this criterion
Microsoft Teams
Microsoft Teams leads on power dialer (2/10 vs 3/10) from approved SoftwareGlimpse editorial assessments — not hands-on lab testing.
Routing & IVR
Tie
Fastmail
Fastmail and Microsoft Teams are close on routing (5/10 vs 5/10) from approved SoftwareGlimpse editorial assessments — not hands-on lab testing.
Microsoft Teams
Fastmail and Microsoft Teams are close on routing (5/10 vs 5/10) from approved SoftwareGlimpse editorial assessments — not hands-on lab testing.
CRM / CTI integrations
Microsoft Teams wins
Fastmail
Trails Microsoft Teams on this criterion
Microsoft Teams
Microsoft Teams leads on crm integrations (5/10 vs 10/10) 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 Microsoft Teams if

Organisations standardised on Microsoft 365 that need chat and meetings as the collaboration hub
Enterprises that may add Teams Phone later for PSTN without changing collaboration vendors
IT-led rollouts that prioritise identity, compliance and app ecosystem over dialer features

Related comparisons

Alternatives to consider

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.

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Independent criterion outcomes
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