Softwr

Productivity · head to head

Fastmail vs Sejda

Fastmail logo

Fastmail

Productivity

Paid email hosting with custom domains, calendar and contacts, run without ad-based revenue

From
$3/month
Rated
-
Full reviewWebsite
Sejda logo

Sejda

Productivity

Browser based access to all PDF tools

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Sejda has a free tier, so it costs nothing to try first.
  • Each has a real cost: Fastmail it does not provide end-to-end encryption by default, so users specifically wanting zero-knowledge mail should compare it against Proton Mail or Tuta rather than assume parity.; Sejda free tier is restricted by page and hourly limits and limited file uploads
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Fastmail and Sejda actually diverge.

Attributes where Fastmail and Sejda differ
AttributeFastmailSejda
Starting price$3/monthFree
Pricing modelPer user per monthfreemium
Free tierNoYes
PlatformsWeb, iOS, Android, macOS, WindowsWeb

Identical on both: user rating (Not yet rated), category (Productivity).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Fastmail

  • Custom domain hosting
  • Masked email
  • Unlimited aliases
  • Integrated calendar and contacts
  • Migration tools
  • JMAP support

Only in Sejda

Nothing recorded that Fastmail does not also cover.

What people use each for

The jobs each tool is most often brought in to do.

Fastmail

  • Someone who wants their email address tied to a domain they own rather than a free provider they do notnot Sejda
  • A small business wanting hosted mail on its own domain without running mail server infrastructurenot Sejda
  • A person leaving Gmail specifically to stop an ad-funded provider processing their mailnot Sejda
  • A household migrating several accounts to one paid provider with shared billingnot Sejda

Sejda

  • Combining multiple PDFs into single files and reordering pagesnot Fastmail
  • Converting PDFs to Excel, Word, PowerPoint for data extractionnot Fastmail
  • Filling and signing PDF forms with digital signatures and validationnot Fastmail
  • Extracting text from scanned documents through OCR processingnot Fastmail
  • Batch automating repetitive PDF tasks across hundreds of documentsnot Fastmail

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Fastmail

  • It does not provide end-to-end encryption by default, so users specifically wanting zero-knowledge mail should compare it against Proton Mail or Tuta rather than assume parity.
  • Moving to Fastmail is a real migration with DNS changes for a custom domain, unlike installing a client such as Spark or Bluemail over an existing account.
  • There is no free tier at all, so a user just wanting to try it commits to a paid trial rather than a permanently free option.
  • Storage limits on the entry Basic plan are modest next to the free allowance Gmail gives, and heavy attachment users will need Standard or above.
  • Being based in Australia means it falls under Australian data access law, which some privacy-focused buyers weigh differently from Swiss or German jurisdictions used by Proton Mail and Tuta.

Sejda

  • Free tier is restricted by page and hourly limits and limited file uploads
  • OCR is capped at 100 pages even on paid plans
  • File uploads are capped at 500MB per file on paid plans
  • The 30 percent annual discount requires paying for a year upfront rather than monthly

Pricing, plan by plan

Fastmail

$3/month
  • Basic$3/month
    • 6GB storage
    • No custom domain support
    • Core mail, calendar and contacts
  • Standard$5/month
    • 60GB storage
    • Custom domain support
    • Masked email and aliases
  • Professional$9/month
    • 150GB storage
    • Multiple custom domains
    • Priority support

Sejda

Free
  • FreeFree
    • Permanently available with no signup required
    • Page/hourly limits applied
    • Restricted file uploads
  • Web Week Pass$5/week
    • Browser-based tools only
    • Single user, 7-day access
  • Web Monthly$7.5/month
    • Browser access to all PDF tools
    • Recurring monthly billing
  • Desktop+Web Annual$63/year
    • Both desktop application and web access
    • Unlimited documents and no page limits
    • Process multiple files simultaneously

Which should you pick?

Choose Fastmail if

  • You need custom domain hosting.
  • You work on Web, iOS, Android, macOS, Windows.
  • You also want masked email.
Fastmail review

Choose Sejda if

  • You want to start without paying.
Sejda review

Questions people ask

Is Fastmail or Sejda better?
Neither clearly leads. Fastmail starts at $3/month and Sejda at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Fastmail or Sejda?
Sejda has a free tier; the other does not. Paid plans start at $3/month for Fastmail and Free for Sejda.
Does Fastmail or Sejda run on more platforms?
Fastmail runs on Web, iOS, Android, macOS, Windows. Sejda runs on Web.
Can I use Sejda for free?
Yes. Sejda has a free tier, so you can try it without paying. Fastmail starts at $3/month.
What is Fastmail best used for?
Fastmail is most often used for someone who wants their email address tied to a domain they own rather than a free provider they do not, a small business wanting hosted mail on its own domain without running mail server infrastructure, a person leaving gmail specifically to stop an ad-funded provider processing their mail, a household migrating several accounts to one paid provider with shared billing. Of those, someone who wants their email address tied to a domain they own rather than a free provider they do not and a small business wanting hosted mail on its own domain without running mail server infrastructure are not what Sejda is typically brought in for.
What can Fastmail do that Sejda cannot?
Fastmail covers Custom domain hosting, Masked email, Unlimited aliases, Integrated calendar and contacts.

Answered from the vendors’ own pages

Fastmail: Is Fastmail a client like Spark, or does it host my email?

It hosts the mailbox itself; there is no separate provider underneath it the way Spark sits over Gmail.

Sejda: How much does Sejda cost?

Sejda offers a free tier (no signup required), a Web Week Pass at $5 for 7 days, Web Monthly at $7.50/month, and Desktop+Web Annual at $63/year (30% savings versus monthly pricing).

Source
Fastmail: Does Fastmail offer end-to-end encryption?

Not by default in the way Proton Mail or Tuta do; its privacy position rests on being subscription-funded rather than ad-funded.

Sejda: Does Sejda offer volume discounts?

Yes, teams receive progressive discounts: 10% for 2-4 users, 20% for 5-24 users, 40% for 25-49 users, and 60% for 50+ users.

Source
Fastmail: Can I use my own domain?

Yes, from the Standard plan up, with full alias and masked email support.

Sejda: What are the limitations of Sejda's free plan?

The free plan includes page/hourly limits and restricted file uploads. Paid subscriptions unlock unlimited documents, no page or hourly limits, simultaneous multi-file processing, extended task duration up to 21 minutes, and large file uploads up to 500MB.

Source
Share

Related pages

More on Fastmail

More on Sejda

Keep looking

Other head to heads