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Marketing · head to head

Buffer vs Postmark

Buffer logo

Buffer

Marketing

Build your audience organically on social media

From
Free
Rated
-
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
Rated
-
Full reviewWebsite

The short version

  • Only Buffer has a free tier, so it costs nothing to try first.
  • Each has a real cost: Buffer the free plan allows 3 connected channels and 10 scheduled posts per channel; Postmark free tier caps at 100 emails per month with no overages allowed
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Buffer and Postmark actually diverge.

Attributes where Buffer and Postmark differ
AttributeBufferPostmark
Starting priceFreeOn request
Free tierYesNo
PlatformsWeb, iOS, AndroidWeb
Founded2010Unknown

Identical on both: pricing model (Unknown), user rating (Not yet rated), category (Marketing).

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 Buffer

  • Post scheduling
  • Content calendar
  • Analytics dashboard
  • Link shortening
  • Hashtag manager
  • First comment
  • Instagram Stories
  • Shop Grid

Only in Postmark

Nothing recorded that Buffer does not also cover.

What people use each for

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

Buffer

  • Social media schedulingnot Postmark
  • Content planningnot Postmark
  • Performance analyticsnot Postmark
  • Team collaborationnot Postmark
  • Client managementnot Postmark

Postmark

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

Where each one falls short

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

Buffer

  • The free plan allows 3 connected channels and 10 scheduled posts per channel
  • Essentials at $5 a month covers a single user; team members need the Team plan at $10 a month
  • Approval workflows and custom permissions are Team tier only
  • API access is rationed by plan, from 3,000 monthly requests on free to 15,000 on Team
  • Content ideas are capped at 100 on the free plan

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

Buffer

Free
  • FreeFree
    • 3 connected accounts
    • 10 scheduled posts per channel per month
    • 100 content ideas
  • Essentials$5/month
    • Unlimited scheduled posts
    • Per-channel pricing
    • Advanced analytics
  • Team$10/month
    • Unlimited team members
    • Unlimited scheduled posts
    • Content approval workflows

Postmark

On request

No published plan breakdown. See the Postmark review.

Which should you pick?

Choose Buffer if

  • You need post scheduling.
  • You want to start without paying.
  • You work on Web, iOS, Android.
  • You also want content calendar.
Buffer review

Choose Postmark if

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

Postmark review

Questions people ask

Is Buffer or Postmark better?
Neither clearly leads. Buffer 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, Buffer or Postmark?
Buffer has a free tier; the other does not. Paid plans start at Free for Buffer and On request for Postmark.
Does Buffer or Postmark run on more platforms?
Buffer runs on Web, iOS, Android. Postmark runs on Web.
Can I use Buffer for free?
Yes. Buffer has a free tier, so you can try it without paying. Postmark starts at On request.
What is Buffer best used for?
Buffer is most often used for social media scheduling, content planning, performance analytics, team collaboration. Of those, social media scheduling and content planning are not what Postmark is typically brought in for.
What can Buffer do that Postmark cannot?
Buffer covers Post scheduling, Content calendar, Analytics dashboard, Link shortening.

Answered from the vendors’ own pages

Buffer: Does Buffer's free plan include all social media platforms?

The free plan supports 3 connected accounts across any of Buffer's 11 supported platforms (Instagram, Facebook, TikTok, LinkedIn, X, YouTube, Threads, Pinterest, Google Business Profile, Bluesky, Mastodon) with up to 10 scheduled posts per channel per month.

Source
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
Buffer: Can I schedule Instagram Stories with Buffer?

No. Instagram Stories cannot be auto-published. Buffer sends a mobile notification to manually post stories, as Instagram does not provide an API for automated Story scheduling.

Source
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
Buffer: What is Buffer's per-channel pricing model?

Buffer charges per social media account (channel) rather than per user. Channels 1-10 cost standard rates ($5 Essentials or $10 Team), with additional channels beyond 10 discounted per channel.

Source
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
Buffer: Does Buffer have a mobile app and what platforms does it support?

Yes, Buffer offers iOS and Android apps for mobile management. The iOS app supports Mastodon and YouTube comment features, while Android support for these features is in development. Android community access works on the six most recent major Android versions.

Source
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
Buffer: What discount does Buffer offer for annual billing?

Buffer offers a 20% discount for annual billing across all paid plans, plus an additional 50% discount on paid plans for nonprofit organizations.

Source
Buffer: Can Buffer integrate with content creation and storage tools?

Yes. Buffer integrates with 24 tools including Canva, Google Drive, Dropbox, Unsplash for media, Zapier and Make for automation, WordPress for publishing, and Claude, ChatGPT, and Perplexity for AI-assisted content creation.

Source
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