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Most buyers should pick Mailjet.
Choose Mailjet if you need campaign creation, automation and transactional sending at a lower listed entry price: $9 monthly, or $8.10 per month with annual billing. Its free tier allows 6,000 emails monthly but caps sending at 200 daily. Choose Mailgun for an API-first delivery stack with validation, previews and inbound parsing; its free tier allows 100 emails daily, while paid plans start at $15 monthly. The published feature list emphasizes delivery tools rather than campaign creation.
01Side by side
| Mailjet | Mailgun | |
|---|---|---|
| Starting price | From $9 monthly; $8.10/month equivalent with annual billing. | $15 monthly; annual pricing not listed. |
| Free plan | 6,000 monthly, capped at 200 daily; 1,000 contacts. | 100 daily; one sending domain and two API keys. |
| Best for | Campaign teams combining marketing and transactional email. | Developers prioritizing transactional email delivery tools. |
| Core strength | Campaign editor, automation, segmentation, API, and SMTP. | Email API plus validation, previews, parsing, and deliverability tools. |
| Learning curve | Review ease-of-use score: 6/10. | Review ease-of-use score: 8/10. |
| Integrations/data | REST API, SMTP, SDKs, and webhooks. | API, SMTP, incoming parsing, and CRM data connection. |
| Team/seat costs | Starter includes one subaccount; seat pricing not published. | Seat pricing not published; Enterprise features are custom. |
| Support | Review support score: 5/10; custom plan includes technical account manager. | Review support score: 5/10; Enterprise includes deliverability services. |
Mailjet Choose Mailjet if
- Choose Mailjet if campaign creation and automation matter.
- Choose Mailjet if you want a lower listed starting price.
- Choose Mailjet if 6,000 monthly free emails fit your volume.
Mailgun Choose Mailgun if
- Choose Mailgun if email delivery is your main requirement.
- Choose Mailgun if you need validation and email previews.
- Choose Mailgun if you need inbound parsing or CRM data connection.
02Pricing compared
Mailjet starts at $9 per month for Starter, or $8.10 per month with annual billing; its pricing page advertises a 10% annual discount. Starter includes 8,000 emails a month, 2,000 contacts and no daily sending limit. Mailgun starts at $15 monthly for Basic, with 10,000 emails a month and no daily limit; its page lists no annual price. The free tiers differ sharply: Mailjet allows 6,000 emails monthly but caps sends at 200 a day, while Mailgun allows 100 a day. Mailjet Essential is $19 monthly for 15,000 emails and unlimited contacts. Mailgun Foundation is $35 for 50,000 emails. Overage charges can change the bill: Mailgun lists extra-email rates from $1.80 per 1,000 on Basic, while Mailjet’s additional-email rate is not published on the vendor's site.
03Features and depth
Mailjet combines campaign marketing with transactional sending. Its feature list includes a drag-and-drop email editor, AI assistance, real-time co-editing and reusable templates, plus action-triggered automation and A/B testing. It also offers audience segmentation: teams can describe filters in plain language, then review and adjust the logic. For delivery, Mailjet lists a RESTful API, SMTP relay, SDKs and webhooks, along with campaign and transactional email analytics.
Mailgun’s published feature list centers more on email delivery and developer tools. It offers API and SMTP sending, receiving and tracking, plus real-time or bulk email validation, email previews, incoming-message parsing and CRM data connections. Its deliverability tools aim to improve delivery and inbox placement, but the published list does not emphasize campaign creation or marketing automation. Choose Mailjet when campaign workflows matter alongside transactional email; choose Mailgun when validation, previews and inbound parsing are priorities. Both list email APIs and SMTP.
04Ease of use and learning curve
Mailjet’s drag-and-drop editor, reusable templates and real-time co-editing give marketing teams tools to build campaigns without relying only on an API. Its plain-language segmentation can help start a filter, but the team still needs to review and adjust the logic. Mailgun’s listed features lean toward API and SMTP workflows, with tools for validation, previews and inbound routing; that may suit a developer-led setup better than a campaign-first one.
Our review scores Mailgun’s ease of use at 8 and Mailjet’s at 6. Those ratings do not explain migration effort, and the published materials do not describe migration tools for either product.
Questions people ask
What is Mailjet email service?
Mailjet is an email marketing and transactional email platform. Its listed tools include campaign creation, automation, audience segmentation and analytics, alongside an Email API, SMTP relay, SDKs and webhooks for sending transactional messages.
Is SendGrid no longer free?
The published pricing information covers Mailjet and Mailgun, not SendGrid, so we can’t verify whether SendGrid has a free plan or what limits apply. For comparison, Mailjet lists 6,000 free emails per month with a 200-per-day cap; Mailgun lists 100 free emails per day.
Who is Mailchimp’s biggest competitor?
The published information does not rank Mailchimp’s competitors, so we can’t name its biggest one. This comparison covers Mailjet and Mailgun: Mailjet combines campaign tools with transactional sending, while Mailgun’s listed features focus more on delivery, validation and email APIs.
Is Mailgun owned by Sinch?
The published Mailgun product and pricing information does not state who owns the company, so we can’t confirm its ownership here. It does describe Mailgun as an email delivery service with API and SMTP tools, validation, previews and incoming email parsing.