Is Prontuno cheaper than Mailgun?

At a $99 monthly budget, Prontuno Standard sends 500,000 emails and Mailgun sends 121,000. Prontuno sends more at that budget, but Mailgun can cost less at lower volumes. Check your own volume in the pricing calculator. Checked September 26, 2026.

Can I switch from Mailgun without rewriting my code?

If you send over SMTP, yes: only the host, port, and credentials change. Mailgun’s API uses similar field names, from, to, subject, and html, but sends them as form data. Prontuno takes JSON, so each send call needs updating. If your app sends email from one place, such as a mailer class, updating it is usually a small change.

When is Mailgun the better choice?

Mailgun is the better choice if you route inbound email to your application; you validate addresses before sending; you want phone and chat support; or you send marketing and transactional email together.

Do I need a new domain to switch from Mailgun?

No. Add your existing domain to Prontuno and publish the DNS records it generates. They use their own names, so your Mailgun records keep working until you finish switching.

Does Prontuno track opens and clicks?

No, by design. Prontuno sends your links and content exactly as written, so password reset and sign-in links are never rewritten through a tracking domain, and no tracking pixel is added. Delivery, deferral, and bounce events are still reported in your logs and webhooks. To measure clicks, add a parameter to links on your own domain and record it in your app.

Can I send marketing email with Prontuno?

No. Prontuno is for transactional email only, such as password resets, receipts, and account alerts. Every account is reviewed, which keeps marketing mail off the shared IPs. Newsletters and campaigns need a separate provider.

CompareHead to head

Prontuno vs Mailgun

By Tunbosun Ayinla, Founder of Prontuno. Last updated: September 26, 2026.

Mailgun, part of Sinch, offers inbound routing, address validation, and phone and chat support on Scale. Prontuno keeps 30 days of logs on every plan, where Mailgun needs Scale, and costs less once you send more than 121,000 emails a month.

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10,000 free credits after approvalReviewed within 24 hours

What $99 a month sends emails / month

Prontuno Standard · 500,000 included: 500,000
Mailgun Foundation · 100,000 included + 21,000 overage: 121,000

Prontuno: 4.1× as many emails as Mailgun for $99. Counted per recipient, on each provider’s best published plan.

At a glance

Prontuno and Mailgun, feature by feature

Mailgun is an email API from Sinch, known for inbound routing and email validation.

Prontuno and Mailgun features compared
Feature	Prontuno	Mailgun
Pricing model	Prepaid credits, or monthly plans per team	Monthly plans by volume, with overages
Lowest paid price	$25 credit pack, or $99 a month for Standard	$15 a month for 10,000 emails on Basic
Free usage	10,000 credits after approval	100 emails a day
Ways to connect	REST API, SMTP relay, and a hosted MCP server. No official SDKs yet	REST API, official SDKs, SMTP, and an official MCP server you run locally
Sending domains	100 per team on credits, 1,000 on Standard and Plus, unlimited on Unlimited	1 on Basic, 1,000 on Foundation and Scale
Dedicated IP	Included with Unlimited, warmed and monitored by Prontuno	1 included on Foundation, dedicated IP pools on Scale
Message history	30 days	1 day on Basic, 5 days on Foundation, 30 days on Scale
Open and click tracking	Not offered. Links and content are sent exactly as written	Available per domain or per message, off by default
Inbound email	Not offered yet	Inbound routes on every plan
Marketing email	Not supported	Allowed through the same API

Mailgun details checked September 26, 2026. See Mailgun pricing.

Price

What your budget buys

Mailgun figures are based on its published plans. Prices and limits can change, so check Mailgun’s pricing page before you decide.

Emails you can send for the same monthly spend, counted per recipient, with prepaid credits and overages included. Taxes and optional add-ons are excluded.

Recipient sends by monthly budget for Prontuno and Mailgun
Monthly budget	Prontuno	Mailgun
$25	25,000 Pay as you go · credits valid for 1 year	15,000 Basic · 10,000 included + 5,000 overage
$99	500,000 Standard · 500,000 included	121,000 Foundation · 100,000 included + 21,000 overage
$299	2,000,000 Plus · 2,000,000 included	343,000 Scale · 250,000 included + 93,000 overage
$999	Unlimited Unlimited · dedicated IP included	1,598,000 Scale · 1,000,000 included + 598,000 overage

Monthly allowances reset each billing cycle. Prontuno prepaid credits stay valid for a year. Prices from the Mailgun pricing page, checked September 26, 2026.

Try any budget in the pricing calculator

In detail

The differences that matter

Price at volume: Mailgun Foundation includes 100,000 emails for $75, so Mailgun costs less below 121,000 emails a month. Above that, Prontuno Standard is cheaper, with 500,000 emails for $99 and prepaid credits for anything beyond.
Logs: Mailgun keeps 1 day of logs on Basic and 5 days on Foundation. Thirty days needs Scale, from $90 a month. Prontuno keeps 30 days of delivery logs on every plan, including prepaid credits.
Features beyond sending: Mailgun offers inbound routing, address validation, and send-time optimization. Prontuno focuses on transactional sending: it does not offer validation, and inbound email is not available yet.
Support: Mailgun offers live phone and chat support on Scale. Prontuno offers email support on every plan.

Verdict

Which one suits you

Neither is right for everyone. Here is when each one is the better choice.

Choose Prontuno if

You want 30 days of logs without moving to a higher plan
You send more than 121,000 emails a month and want a fixed price
You want many sending domains while paying as you go
You only send transactional email
You want links sent exactly as written, with no tracking redirects

Choose Mailgun if

You route inbound email to your application
You validate addresses before sending
You want phone and chat support
You send marketing and transactional email together

Switching

Move from Mailgun in four steps

Step 1

Request access and describe what your app sends. Applications are reviewed within 24 hours.
Step 2

Add your sending domain and publish the DNS records Prontuno generates. They use their own names, so your Mailgun records can stay while you switch.
Step 3

Change your SMTP settings, or update your API calls to Prontuno’s format, then send a test email.
Step 4

Add a webhook endpoint for delivery events, and import your suppression list through the API.

FAQ

Questions about Prontuno and Mailgun

Is Prontuno cheaper than Mailgun?: At a $99 monthly budget, Prontuno Standard sends 500,000 emails and Mailgun sends 121,000. Prontuno sends more at that budget, but Mailgun can cost less at lower volumes. Check your own volume in the pricing calculator. Checked September 26, 2026.
Can I switch from Mailgun without rewriting my code?: If you send over SMTP, yes: only the host, port, and credentials change. Mailgun’s API uses similar field names, from, to, subject, and html, but sends them as form data. Prontuno takes JSON, so each send call needs updating. If your app sends email from one place, such as a mailer class, updating it is usually a small change.
When is Mailgun the better choice?: Mailgun is the better choice if you route inbound email to your application; you validate addresses before sending; you want phone and chat support; or you send marketing and transactional email together.
Do I need a new domain to switch from Mailgun?: No. Add your existing domain to Prontuno and publish the DNS records it generates. They use their own names, so your Mailgun records keep working until you finish switching.
Does Prontuno track opens and clicks?: No, by design. Prontuno sends your links and content exactly as written, so password reset and sign-in links are never rewritten through a tracking domain, and no tracking pixel is added. Delivery, deferral, and bounce events are still reported in your logs and webhooks. To measure clicks, add a parameter to links on your own domain and record it in your app.
Can I send marketing email with Prontuno?: No. Prontuno is for transactional email only, such as password resets, receipts, and account alerts. Every account is reviewed, which keeps marketing mail off the shared IPs. Newsletters and campaigns need a separate provider.