Deliverability pricing comparison

Every deliverability tool we track, side by side on price. Numbers pulled from each vendor's published pricing page and refreshed weekly. No invented benchmarks, no estimated tiers.

4 Tools compared

4 Have a free plan

· Lowest paid entry

2026-04-30 Most recent capture

Free tiers

What each tool gives you on the free plan, before any paid upgrade. Tools without a free plan are listed in the next table.

Tool	Plan	Contact limit	Monthly send limit	Source
Mailgun	Free	·	3,000 emails (100/day cap, 30-day conversion)	Vendor
Mailtrap	Free	·	4,000	Vendor
Postmark	Free	·	100	Vendor
Resend	Free	·	3,000 emails (100/day cap)	Vendor

Entry paid plans

The cheapest published paid plan for each tool. This is the upgrade target after a free trial or free tier. Custom / contact-sales plans are excluded; see the per-tool page for those.

Tool	Plan	Monthly price	Contact limit	Send limit	Action
Mailgun	Basic	$15 /mo	·	10,000	View Mailgun
Mailtrap	Basic	$15 /mo	·	100,000 emails (entry $15 covers 10k; scales to $30 at 100k)	View Mailtrap
Postmark	Basic	$15 /mo	·	10,000	View Postmark
Resend	Pro 50k	$20 /mo	·	50,000	View Resend

Mid-tier paid plans

The plan above entry-tier where most growth-stage publishers land as the contact list scales. Tools without a published mid tier jump straight to enterprise / contact-sales pricing and are omitted here.

Tool	Plan	Monthly price	Contact limit	Send limit
Mailgun	Foundation	$35 /mo	·	50,000
Mailtrap	Business	$85 /mo	·	750,000 emails (entry $85 covers 100k; scales to $450 at 750k)
Postmark	Pro	$16.50 /mo	·	10,000
Resend	Pro 100k	$35 /mo	·	100,000

Beyond price

Cost is one dimension. The pages below cover the same deliverability set on different axes.

Editorial ranking /best/deliverability Ranks the same tools by editorial fit (free-plan-first, then ascending price, then alphabetical) with verdict tags and best-for / not-for slices per row. Switch guides 4 deliverability migration guides Long-form switch guides for the in-category pairs (export mechanics, automation rebuilds, DKIM sequencing, what you lose vs gain). Head-to-head 6 pairs in /compare Two-tool head-to-head matchups with side-by-side plan grids, limits at the entry tier, and best-for splits.

Deliverability migration guides

Postmark to Resend Volume value · Developer DX
Mailgun to Resend Cost reduction · Developer DX
Mailgun to Postmark Deliverability focus · Compliance retention
Resend to Postmark Deliverability · Compliance retention

Featured head-to-head pairs

How this table is built

Every price and limit is captured from the vendor's own published pricing page. We do not estimate, interpolate, or carry over numbers from third-party reviews.
Pricing is refreshed weekly via a cron-driven Playwright scrape with editorial preservation: low-confidence scraped values never overwrite verified prior values.
Ranking inside each table is free-plan-first, then ascending entry price, then alphabetical. Affiliate relationships do not influence ranking.
"Custom" or "contact sales" plans are omitted from the price columns. The per-tool page (/tools/{slug}) shows the full plan ladder including enterprise tiers.
Tools without a published mid tier (free + entry + enterprise only) are omitted from the mid-tier table rather than padded with placeholders.

Vendor pricing-page citations

Every plan in the tables above is sourced from the URLs below. Click through to verify any number; vendors update prices on their own cadence and we capture weekly.

Mailgun: https://www.mailgun.com/pricing/ (captured 2026-04-30)
Mailtrap: https://mailtrap.io/pricing/ (captured 2026-04-30)
Postmark: https://postmarkapp.com/pricing (captured 2026-04-30)
Resend: https://resend.com/pricing (captured 2026-04-30)