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Documented scope and limits; unverified dimensions remain unknown.
Requirement	SendGrid	Mailgun
Pricing	From $19.95/mo Compare all 4 plans	From $15/mo Compare all 5 plans
Who it is for	Email API for application email, priced by monthly send volume and feature tier. Verified Oct 11, 2026 · SendGrid: 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	The only free option is a 60-day trial at 100 emails a day, not a permanent free plan. Verified Oct 11, 2026 · SendGrid: 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	Free Trial 100 emails per day Essentials 50,000 to 100,000 emails a month Pro 100,000 to 2,500,000 emails a 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	Free Trial 3 days of searchable email activity Essentials 3 days of searchable email activity Pro 7 days of searchable email activity Premier 7 days of searchable email activity	Free 1 day of logs Basic 1 day of logs Foundation 5 days of logs Scale 30 days of logs
Webhooks and events	Free Trial 1 event webhook Essentials 2 event webhooks Pro 5 event webhooks Premier 5 event webhooks	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	Pro and Premier include dedicated IPs; more can be purchased. Verified Oct 11, 2026 · SendGrid: official product and plan documentation Pro 1 dedicated IP included Premier 1 dedicated IP included	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	Access to expert services and personalized support is listed as available for purchase. No price is shown. Verified Oct 11, 2026 · SendGrid: official product and plan documentation	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	Sending past the plan's allowance may add overage charges on top of the monthly rate; the rate is not published on the pricing page. SendGrid suggests upgrading if you regularly hit the limit. Verified Oct 11, 2026 · SendGrid: official product and plan documentation	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	Additional IPs can be bought as an add-on. More history is available for purchase. Volume is selected at purchase.	Starting allowance.