Best for
Best for creators, designers and small businesses that want beautifully designed emails without a steep learning curve.
- Freelancers
- Small and mid-sized
No tools match
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Email Marketing Comparison
At a glance
Best for
Best for creators, designers and small businesses that want beautifully designed emails without a steep learning curve.
Best for
Best for engineering teams sending at high volume that need an API and SMTP relay, with the option of an EU data centre.
Cataleo does not name a winner. Both statements come from the vendors themselves.
| Criterion | Flodesk | Mailgun |
|---|---|---|
| Starting price | Free plan; paid from $19 / month Lite billed annually at 1,000 subscribers, or $25 / month billed monthly. Every paid price scales with the active subscriber count, and annual billing includes one month free. Priced in US dollars worldwide. | lower value Free tier; Basic from $15 / month Basic $15 per month for 10,000 emails, Foundation $35 for 50,000 and Scale $90 for 100,000, then Enterprise on request. Overage is $1.80 per 1,000 on Basic and Foundation and $1.10 on Scale. Foundation and Scale are free for the first month. |
| Free trial | Free plan available, plus free trials on the paid plans | Free tier: 100 emails per day |
| API | Yes, a developer API with webhooks and a Model Context Protocol server; API keys are available on paid plans but not on free or trial accounts | Yes, RESTful email API and SMTP relay, with official SDKs for Python, Ruby, PHP, Java, C#, Node.js and Go |
| Hosting | Cloud (SaaS) | Cloud (SaaS), with data centres in the US and the EU |
| Campaign types | Yes, email campaigns, plus forms, landing pages and, on the top plan, sales pages | Transactional and bulk sending over the RESTful API or the SMTP relay, batch sending of up to 1,000 personalised messages per call, scheduled messages, and inbound routing that parses received mail into UTF-8 JSON |
| Automation and journeys | Yes, workflow automations on the paid plans, unlimited on Pro and above | No journey builder. Sends are triggered by your own application, with message scheduling and Send Time Optimization placing individual messages when a recipient is most likely to engage. |
| Segmentation and personalisation | Yes, audience segmentation | Per-recipient personalisation through batch sending, which substitutes recipient variables for up to 1,000 addresses in a single API call; mailing lists are documented in the user manual. |
| Templates and editor | Yes, designer-made templates and a visual editor | Reusable templates, documented in the user manual alongside mailing lists, batch sending and scheduling; there is no drag-and-drop campaign designer in the sending product |
| Deliverability and testing | Yes, subject line A/B testing that sends two variants to part of the list and the winner to the rest after 24 hours, with side-by-side results, plus AI subject line recommendations, content and sequence testing through split-path workflows, a send time optimizer, resend to unopens and a dedicated IP as a paid add-on | Authentication covers SPF, DKIM, DMARC and BIMI, with suppression management and an email validation API. Deeper tooling sits in Mailgun Optimize, priced separately: inbox placement testing down to the tab or folder, blocklist and spam trap monitoring with Google Postmaster Tools and Microsoft SNDS integration, preview rendering on 100+ devices and clients, and deliverability consulting. One dedicated IP is included from Foundation; extra IPs are $59 per month. |
| Ecommerce and CRM data | Yes, integrated checkouts, sales pages and subscriptions with payment processing on the Everything plan | No store or CRM data model of its own; orders and customer records stay in the system they come from. The integrations directory connects Salesforce, Salesforce Agentforce Marketing, HubSpot, SAP S/4HANA Private Cloud Edition and WordPress, whose free Mailgun plugin also carries the mail from plugins running on it such as WooCommerce. Shopify runs through Zapier rather than a Shopify app, triggering on events such as a new order to send a message or add the customer to a Mailgun list. |
| Integrations and API | Yes, a developer API with webhooks plus a Model Context Protocol server, included on every paid plan, alongside native integrations and Zapier and Pabbly Connect | Yes, RESTful email API and SMTP relay, plus an SMTP API for finer sending control, webhooks for real-time event data and an email validation API. Official SDKs for Python, Ruby, PHP, Java, C#, Node.js and Go. |
| AI features | stated Yes | No |
| MCP-ready | stated Yes | No |
| Deployment | Cloud (SaaS), Browser-based | Cloud (SaaS), Browser-based |
| Support | Email helpdesk, Community forum | more entries Email helpdesk, Phone, Chat |
| Onboarding | more entries Documentation and knowledge base, Live online demos and webinars | Documentation and knowledge base |
| Company size | Freelancers, Small and mid-sized | more entries Freelancers, Small and mid-sized, Enterprise |
| Integrations | Shopify, Canva, Instagram, Squarespace, Wix, ThriveCart, ManyChat, HoneyBook, Interact, BookFunnel, Zapier, Pabbly Connect | more entries Salesforce, HubSpot, Shopify, WordPress, WooCommerce, SAP S/4HANA, Zapier, Make, n8n, Pipedream, Workato, Slack, Asana, Google Analytics, Datadog, Splunk, Heroku, GitHub Actions, Replit, Lovable |
Adds a column to the table, from the tools in this category.
Row where the values differ The small markers point at the lower number, the longer list or the stated feature. They describe the data, they are not a verdict.
The short version
Every line is one datapoint from the table above, picked automatically. Nothing here is written text.
The trade-offs
Flodesk
Strengths
Limitations
Mailgun
Strengths
Limitations
Plans
Flodesk
Mailgun
What users say
Flodesk
No reviews yet. Be the first to review this tool. Every review is checked for fairness before it appears, and the vendor cannot have one removed.
Mailgun
No reviews yet. Be the first to review this tool. Every review is checked for fairness before it appears, and the vendor cannot have one removed.
Where this comes from
Flodesk https://flodesk.com · checked against the official source on 2026-09-05
Mailgun https://www.mailgun.com · checked against the official source on 2026-09-09
This table lists factual criteria taken from information the vendors publish themselves. For how we put it together, see the methodology.