Software · head to head
Postmark vs Mailgun

Postmark
Software
No hidden fees, no guesswork. Just the features you need, at a price that makes sense
- From
- Free
- Rated
- -
The short version
- Only Postmark has a free tier, so it costs nothing to try first.
- Each has a real cost: Postmark free tier caps at 100 emails per month with no overages allowed; Mailgun free plan caps at 100 emails per day
Where they differ
Only the attributes on which Postmark and Mailgun actually diverge.
Identical on both: platforms (Web), user rating (Not yet rated), category (Unknown).
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
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
Mailgun
- Free plan caps at 100 emails per day
- Basic plan starts at $15/mo for 10,000 emails then overages from $1.80 per 1,000; Foundation and Scale plans discount overage rates but still meter every email beyond the included volume
- Foundation ($35/mo) and Scale ($90/mo) plans are free for the first month only, then bill at full price
Pricing, plan by plan
Postmark
FreeNo published plan breakdown. See the Postmark review.
Mailgun
On requestNo published plan breakdown. See the Mailgun review.
Which should you pick?
Choose Mailgun if
Nothing in the data separates Mailgun from Postmark on the points above - pick on price and on how each one feels to use.
Questions people ask
- Is Postmark or Mailgun better?
- Neither clearly leads. Postmark starts at Free and Mailgun at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Postmark or Mailgun?
- Postmark has a free tier; the other does not. Paid plans start at Free for Postmark and On request for Mailgun.
- Does Postmark or Mailgun run on more platforms?
- Both run on Web, so platform support will not decide this one for you.
- Can I use Postmark for free?
- Yes. Postmark has a free tier, so you can try it without paying. Mailgun starts at On request.

