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Surveys · head to head

KoboToolbox vs Postmark

KoboToolbox logo

KoboToolbox

Surveys

Offline-first data collection for humanitarian, development and research field work

From
Free
Free plan
Yes
Full reviewWebsite
Postmark logo

Postmark

Marketing

No hidden fees, no guesswork. Just the features you need, at a price that makes sense

From
On request
Free plan
No
Full reviewWebsite

The short version

  • Only KoboToolbox has a free tier, so it costs nothing to try first.
  • Each has a real cost: KoboToolbox the free Community plan caps at 5,000 submissions a month and 1 GB of file storage, and any form collecting photographs exhausts storage long before it exhausts the submission count.; Postmark free tier caps at 100 emails per month with no overages allowed
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which KoboToolbox and Postmark actually diverge.

Attributes where KoboToolbox and Postmark differ
AttributeKoboToolboxPostmark
Starting priceFreeOn request
Pricing modelPer month by submission countUnknown
Free tierYesNo
PlatformsWeb, Android, Self-hostedWeb
CategorySurveysMarketing

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

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 KoboToolbox

  • Offline data collection
  • XLSForm and browser form builder
  • Skip logic and validation
  • Multilingual forms
  • GPS and media capture
  • Case management
  • Exports and analysis
  • Self-hosting

Only in Postmark

Nothing recorded that KoboToolbox does not also cover.

What people use each for

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

KoboToolbox

  • A rapid needs assessment after a disaster where enumerators work for days without mobile coveragenot Postmark
  • A ministry of health running a national survey that must be self-hosted in country for data protection reasonsnot Postmark
  • An NGO running the same longitudinal household survey in four languages across three countriesnot Postmark
  • A research group that needs a free instrument for a modest sample and an SPSS export at the endnot Postmark

Postmark

  • Sending password reset emails with industry-leading delivery speednot KoboToolbox
  • Processing inbound email replies into JSON objects for applicationsnot KoboToolbox
  • Tracking failed email deliveries and suppressing invalid addressesnot KoboToolbox
  • Separating transactional emails from marketing emails with message streamsnot KoboToolbox

Where each one falls short

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

KoboToolbox

  • The free Community plan caps at 5,000 submissions a month and 1 GB of file storage, and any form collecting photographs exhausts storage long before it exhausts the submission count.
  • The Starter paid plan allows only 1,000 submissions a month for $21, which is fewer than the free nonprofit tier, so a small commercial user pays more for less than a charity gets free.
  • Eligibility for the free plan depends on Kobo's assessment of your organisation and purpose, which introduces an approval step that a consultancy working on behalf of an NGO may not clear.
  • Self-hosting is genuinely possible but the stack is substantial to deploy and maintain, so a ministry choosing it for data residency reasons takes on real infrastructure staffing cost.
  • Analysis and reporting inside the platform are basic compared with dedicated tools, so most serious use exports to Excel, Power BI or statistical software, and that export step is where data governance often gets loose.

Postmark

  • Free tier caps at 100 emails per month with no overages allowed
  • Basic plan ($15/mo) includes 10,000 emails then charges $1.80 per 1,000 extra; Pro and Platform tiers have their own lower per-1,000 overage rates ($1.30 and $1.20), so cost scales per email beyond the included volume
  • Custom high-volume pricing above the published tiers requires contacting sales

Pricing, plan by plan

KoboToolbox

Free
  • CommunityFree
    • Free for qualifying nonprofit and public good organisations
    • 5,000 submissions per month
    • 1 GB file storage
  • Starter$21/month
    • 1,000 submissions per month
    • 0.5 GB file storage
    • For private and for-profit use
  • Professional$129/month
    • 25,000 submissions per month or 300,000 per year
    • Unlimited file storage
    • Priority support
  • Teams$undefined/month
    • 50,000 submissions per month or 600,000 per year
    • Shared team administration
    • Pricing published by plan tier

Postmark

On request

No published plan breakdown. See the Postmark review.

Which should you pick?

Choose KoboToolbox if

  • You need offline data collection.
  • You want to start without paying.
  • You work on Web, Android, Self-hosted.
  • You also want xlsform and browser form builder.
KoboToolbox review

Choose Postmark if

Nothing in the data separates Postmark from KoboToolbox on the points above - pick on price and on how each one feels to use.

Postmark review

Questions people ask

Is KoboToolbox or Postmark better?
Neither clearly leads. KoboToolbox starts at Free and Postmark at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, KoboToolbox or Postmark?
KoboToolbox has a free tier; the other does not. Paid plans start at Free for KoboToolbox and On request for Postmark.
Does KoboToolbox or Postmark run on more platforms?
KoboToolbox runs on Web, Android, Self-hosted. Postmark runs on Web.
Can I use KoboToolbox for free?
Yes. KoboToolbox has a free tier, so you can try it without paying. Postmark starts at On request.
What is KoboToolbox best used for?
KoboToolbox is most often used for a rapid needs assessment after a disaster where enumerators work for days without mobile coverage, a ministry of health running a national survey that must be self-hosted in country for data protection reasons, an ngo running the same longitudinal household survey in four languages across three countries, a research group that needs a free instrument for a modest sample and an spss export at the end. Of those, a rapid needs assessment after a disaster where enumerators work for days without mobile coverage and a ministry of health running a national survey that must be self-hosted in country for data protection reasons are not what Postmark is typically brought in for.
What can KoboToolbox do that Postmark cannot?
KoboToolbox covers Offline data collection, XLSForm and browser form builder, Skip logic and validation, Multilingual forms.

Answered from the vendors’ own pages

KoboToolbox: Is KoboToolbox free?

Free for qualifying nonprofit and public good organisations under the Community plan, currently 5,000 submissions a month and 1 GB of storage. Commercial use requires a paid plan from $21 a month.

Postmark: What is the cheapest paid plan for Postmark email sending?

Postmark Basic plan is $15/month for 10,000 emails, with overages at $1.80 per 1,000 additional emails. Free tier limited to 100/month. No annual billing discount available. Source: https://www.postmarkapp.com/pricing

Source
KoboToolbox: Who funds it?

Kobo Inc is a US nonprofit funded roughly 38 per cent by grants and contributions and 62 per cent by service contracts, subscriptions and training, based on its 2024 figures.

Postmark: How are Postmark email overages calculated?

Overages are calculated at month-end and billed with your next plan cost. Basic tier overages: $1.80 per 1,000; Pro: $1.30 per 1,000; Platform: $1.20 per 1,000. Unused monthly emails do not carry over. Source: https://www.postmarkapp.com/pricing

Source
KoboToolbox: Can I host it myself?

Yes. The server stack is open source and is regularly deployed in country for data residency reasons.

Postmark: What payment methods does Postmark accept?

Postmark accepts Visa, MasterCard, American Express, Diners Club, and JCB. No PayPal or purchase orders accepted. Bootstrapped startups can request a $75 account credit. Source: https://www.postmarkapp.com/pricing

Source
KoboToolbox: Are forms portable?

Yes. It uses XLSForm and ODK standards, so instruments move between Kobo and other ODK-compatible servers.

Postmark: Can I get a dedicated IP on Postmark without high volume?

No. Postmark dedicated IPs require minimum 300,000 emails per month and start at $50/month. Alternative: use Postmark's shared infrastructure included in all tiers. Source: https://www.postmarkapp.com/pricing

Source
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