Fastmail Duo
The Fastmail Duo plan costs $8 per month for 2 people, billed yearly ($96); $10 monthly.
What the plan includes
Two private inboxes with 60 GB each, plus addresses, calendars and an address book the two can share.
As stated on fastmail.comThe plans either side of it
- Standard$5 per user / month, billed yearly ($60); $6 billed monthlyone below
Business plan with 60 GB per user, addresses at a custom domain, shared addresses and calendars, Scheduled Send and third-party app access.
- Professional$9 per user / month, billed yearly ($108); $10 billed monthlyone above
Everything in Standard with 150 GB of storage per user and an email retention archive for legal compliance.
What else costs about this much
| Tool | Starts at | Free plan |
|---|---|---|
| HEY | $8.25 a month | No |
| Spark Mail | $8.25 a month | Yes |
| Edison Mail | $8.33 a month | Yes |
| Leave Me Alone | $7.50 a month | No |
| Mailspring | $7.08 a month | Yes |
| Gmail | $7 a month | Yes |
Each tool’s own starting price, within a quarter of what this plan costs. A starting price is not the same plan, so read what each one includes before weighing them against each other.
Fastmail Duo questions
How much is the Fastmail Duo plan?
The Fastmail Duo plan costs $8 per month for 2 people, billed yearly ($96); $10 monthly. Two private inboxes with 60 GB each, plus addresses, calendars and an address book the two can share.
What is the difference between Fastmail Standard and Duo?
Standard costs $5 per user / month, billed yearly ($60); $6 billed monthly and gives you business plan with 60 GB per user, addresses at a custom domain, shared addresses and calendars, Scheduled Send and third-party app access. Duo costs $8 per month for 2 people, billed yearly ($96); $10 monthly and gives you two private inboxes with 60 GB each, plus addresses, calendars and an address book the two can share.
Is it worth moving from Duo to Professional?
That depends on what you need. Professional costs $9 per user / month, billed yearly ($108); $10 billed monthly and adds everything in Standard with 150 GB of storage per user and an email retention archive for legal compliance. The listing is what each plan states; neither plan is graded on its own.
Does Fastmail have a free plan or a trial?
There is no free plan, but there is a 30-day free trial, no credit card required.
When was this checked?
Oct 5, 2026, against https://www.fastmail.com/pricing/us/. Vendors change prices and plans without notice, so confirm on their site before you buy.