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Documented scope and limits; unverified dimensions remain unknown.
Requirement	Brevo Transactional Email	Mailgun
Pricing	From $9/mo Compare all 5 plans	From $15/mo Compare all 5 plans
Who it is for	Transactional email sent by API or SMTP from your application, inside an all-in-one platform that also runs marketing campaigns. Verified Oct 11, 2026 · Brevo Transactional Email: official product and plan documentation	Sends application email through an HTTP API or an SMTP endpoint. Verified Oct 11, 2026 · Mailgun: official product and plan documentation
Coverage limits	Attachments are limited to 25 MB per email, and one API request can batch up to 1,000 emails. Verified Oct 11, 2026 · Brevo Transactional Email: official product and plan documentation	Free and Basic allow 1 custom sending domain and 1 day of logs; Foundation raises this to 1,000 domains and 5 days, and Scale keeps 30 days. Verified Oct 11, 2026 · Mailgun: official product and plan documentation
Sending volume	Plans are priced on emails sent; contact-based pricing applies only to marketing features. Verified Oct 11, 2026 · Brevo Transactional Email: official product and plan documentation Free 300 emails per day Starter 5,000 emails per month Standard 5,000 emails per month Professional 150,000 emails per month	Free 100 emails per day Basic 10,000 emails per month Foundation 50,000 emails per month Scale 100,000 emails per month
Sender domains	Not verified	Free 1 custom sending domain Basic 1 custom sending domain Foundation 1,000 custom sending domains Scale 1,000 custom sending domains
Log retention	Flexible log retention is advertised; a numeric retention window is not stated on this page. Verified Oct 11, 2026 · Brevo Transactional Email: official product and plan documentation	Free 1 day of logs Basic 1 day of logs Foundation 5 days of logs Scale 30 days of logs
Webhooks and events	Event webhooks and real-time tracking are listed. Verified Oct 11, 2026 · Brevo Transactional Email: official product and plan documentation Free Webhook support included	Tracking, analytics and webhooks are listed from the Free plan up. Basic, Foundation and Scale cards list them too. Verified Oct 11, 2026 · Mailgun: official product and plan documentation
Dedicated IP	Dedicated IPs with custom warming schedules are offered to high-volume senders; no price is published. Verified Oct 11, 2026 · Brevo Transactional Email: official product and plan documentation Enterprise Dedicated IPs are part of the custom Enterprise plan	Extra dedicated IPs cost USD 59 per IP a month. Verified Oct 11, 2026 · Mailgun: official product and plan documentation Foundation Available from the 50,000-email tier; one IP included from 100,000 emails a month Scale One dedicated IP included, plus dedicated IP pools
Support	Free Email support Starter Email support in 6 languages Professional Phone support plus 3 hours a year with a deliverability specialist Enterprise Tailored onboarding and CSM support	Ticket, chat and phone support depend on the plan. Verified Oct 11, 2026 · Mailgun: official product and plan documentation Free Ticket support Scale Live phone and chat support
Overage charges	Pay-as-you-go email credits are an alternative to a plan: they do not expire and one email uses one credit. Pay-as-you-go does not include phone support; the credit price is not shown. Verified Oct 11, 2026 · Brevo: official pricing page	Extra emails are billed at the start of each month for the previous month, together with the plan fee. The first month is prorated. Verified Oct 11, 2026 · Mailgun: official product and plan documentation
Coverage note	Starting volume.	Starting allowance.