Mailgun ranked #1 of 3 on /best/transactional-email
Mailgun alternatives
3 tools that compete with Mailgun in transactional email, ranked by entry price with live plan data. Mailgun itself starts at Free; verified .
Ranked alternatives
Free-plan tools first, then ascending by entry price, then alphabetical. Tags are derived from each tool's verified plan data; no editorial verdict claims.
How we ranked these
- Candidates. Every tool we hand-flagged as a Mailgun alternative, plus every tool sharing its primary category (transactional email). Tools we don't yet track are not listed; we never link out to a tool we haven't verified.
- Order. Free-plan tools first, then ascending by entry monthly price (the headline anchor we capture from each vendor). Custom-priced tools sort last. Ties broken alphabetically.
- Tags. Each row's tags are computed against Mailgun's data: cheaper entry, free plan present, more plan tiers, enterprise tier present. No editorial "better than" claims.
- Freshness. Pricing is captured weekly from each vendor's pricing page, listed in the source citation below. Confirm at the vendor's page before buying.
Leaving Mailgun? Read first 2 guides
Long-form migration guides written for Mailgun departures. Each covers the cost math, what you lose, what you gain, and the pair-specific gotchas your alternatives shortlist won't surface on its own.
Compare on price
Want a price-only view across Mailgun and the alternatives above? See the transactional email pricing comparison : free tiers, entry paid plans, and mid-tier plans side by side in a single table. Same data spine, different angle.
Common questions
- What's the cheapest alternative to Mailgun?
- None of the 3 alternatives we track has a lower entry price than Mailgun (Free). Compare on free-plan limits and feature scope instead.
- Which Mailgun alternative has a free plan?
- MailerLite, Postmark, Resend all offer permanent free plans. Free-tier limits vary, so the right pick depends on your contact count and send volume.
- Are these all in the same category as Mailgun?
- 2 of 3 share Mailgun's primary category (transactional email). The rest are adjacent tools that overlap on use case.
- Where can I compare Mailgun side-by-side with these alternatives?
- Each Mailgun-vs-alternative pair has a dedicated head-to-head page on TierGauge with verified plan data, side-by-side feature mapping, and limit comparison at the entry paid tier. Pairs are linked from each row in the ranked list above; the canonical URL is /compare/<a>-vs-<b> alphabetical.
Sources
- Mailgun: https://www.mailgun.com/pricing/
- MailerLite: https://www.mailerlite.com/pricing
- Postmark: https://postmarkapp.com/pricing
- Resend: https://resend.com/pricing
Last verified . Pricing changes between refreshes; confirm at each vendor before purchasing.