Mailgun vs SendGrid
Compare Mailgun and SendGrid for drip email automation. API features, deliverability, pricing, and automation capabilities analyzed.
Last updated: 2026-03-15
Mailgun
mailgun.comPowerful email API for developers by Sinch
Best for: Developers who need flexible email API with strong routing and parsing capabilities
SendGrid
sendgrid.comEmail delivery and marketing platform by Twilio
Best for: Teams needing both transactional and marketing email with automation
TL;DR: Mailgun vs SendGrid for Drip Campaigns
Mailgun excels at email routing, parsing, and developer flexibility. SendGrid offers more marketing automation features and a broader platform. Neither is purpose-built for SaaS drip sequences. Sequenzy fills that gap with native billing integration and pre-built drip flows.
Best for developers who need advanced email routing and parsing alongside drip.
Best for teams wanting built-in automation with proven infrastructure.
Best for SaaS drip emails with native Stripe/Paddle billing triggers.
Editor's Note
Both are solid email infrastructure platforms with different strengths. Mailgun shines at parsing and validation. SendGrid offers more marketing and automation features. Choose based on your primary use case.
Mailgun vs SendGrid vs Sequenzy: Quick Comparison
| Feature | Mailgun | SendGrid | Sequenzy | Edge |
|---|---|---|---|---|
| Visual drip builder | No visual builder | Basic automation builder | Guided SaaS sequence builder | SendGrid |
| Email routing/parsing | Advanced inbound routing and parsing | Basic inbound parse | Not available | Mailgun |
| API flexibility | RESTful API with SMTP relay | Comprehensive v3 REST API | Focused REST API | Tie |
| Email validation | Built-in email validation service | Available as add-on | Basic validation | Mailgun |
| Deliverability tools | Dedicated IP, domain reputation | Dedicated IP, ISP insights | Managed shared pools | SendGrid |
| SaaS billing triggers | Requires custom integration | Requires custom integration | Native Stripe/Paddle triggers | Sequenzy |
| Free tier | 3-month trial only | 100 emails/day forever | No free tier ($19/mo start) | SendGrid |
Score Breakdown
Totals: Mailgun 47/70, SendGrid 53/70, Sequenzy 55/70.
Drip Email Feature Comparison
Feature-by-feature analysis of drip campaign capabilities.
Sequence Building
| Feature | Mailgun | SendGrid | Sequenzy |
|---|---|---|---|
| Visual workflow editor | 3/10 No visual automation builder | 6/10 Basic automation builder UI | 8/10 Guided SaaS sequence builder |
| API-driven sequences | 8/10 Flexible API for scheduled and triggered sends | 7/10 Comprehensive API with automation triggers | 7/10 REST API for sequence management |
| Template management | 7/10 Template storage with variables via API | 7/10 Dynamic templates with Design Editor | 8/10 Pre-built SaaS drip templates |
| Scheduled sending | 8/10 MIME message scheduling up to 7 days | 7/10 Schedule sends in automation or API | 8/10 Timezone-aware scheduled delivery |
Email Infrastructure
| Feature | Mailgun | SendGrid | Sequenzy |
|---|---|---|---|
| Inbound email parsing | 9/10 Advanced inbound routing, parsing, and forwarding | 6/10 Basic inbound parse webhook | 2/10 Not a core feature |
| Email validation | 9/10 Built-in bulk and real-time validation | 6/10 Available as paid add-on | 4/10 Basic format validation |
| Tagging and tracking | 8/10 Custom tags for campaign tracking | 8/10 Categories and custom tracking | 7/10 Sequence-level tracking |
Pricing Comparison
Mailgun starts higher ($35/mo) but includes email validation. SendGrid starts at $19.95/mo with a permanent free tier. Both charge by email volume. Sequenzy offers flat-rate plans focused on drip functionality.
3-month trial, 5,000 emails/mo (no permanent free plan)
100 emails/day forever (about 3,000/mo)
No free tier. $19/mo for 15,000 emails
| Tier | Mailgun | SendGrid | Sequenzy |
|---|---|---|---|
| Starter | $35/mo 50,000 emails/mo, email validation included | $19.95/mo 40,000 emails/mo, basic automation | $19/mo 15,000 emails, all drip features |
| Growth | $75/mo 100,000 emails/mo, dedicated IP | $34.95/mo 100,000 emails/mo, full automation | $49/mo 50,000 emails, priority support |
| Scale | $250/mo 500,000 emails/mo, SLA | $74.95/mo 200,000 emails/mo, dedicated IP option | $99/mo 150,000 emails, account manager |
| Enterprise | Custom Custom volume, dedicated support | Custom Custom volume, SLA, sub-user management | $99/mo 150,000 emails, all features |
Pricing Verdict: SendGrid offers better value at lower volumes with its free tier and lower starting price. Mailgun includes email validation in its pricing, which adds value for teams that need list cleaning. Sequenzy is the most affordable option for SaaS-specific drip needs.
Cost Note
Factor in Mailgun included email validation when comparing prices. If you would need validation separately with SendGrid, the cost difference narrows significantly.
Drip Campaign Types Comparison
How each platform handles different types of drip email campaigns.
Welcome/Onboarding Drip
Automated onboarding sequence for new users
Mailgun
Must be built via API with scheduled sends
SendGrid
Automation builder with basic welcome flow
Sequenzy
Pre-built SaaS onboarding sequences
Verdict: Sequenzy provides the fastest path to working onboarding drips.
Trial-to-Paid Conversion
Sequences to convert trial users
Mailgun
Custom API integration for billing triggers
SendGrid
Event-based automation, billing requires custom work
Sequenzy
Native Stripe/Paddle trial conversion triggers
Verdict: Sequenzy is purpose-built for trial conversion with billing data.
Transactional Follow-up
Follow-up emails after transactional events
Mailgun
Strong API for triggered transactional sequences
SendGrid
Transactional API with automation layer
Sequenzy
Billing-event follow-up sequences
Verdict: Mailgun and SendGrid are both strong for transactional follow-up.
Re-engagement Drip
Win back inactive users
Mailgun
Segment via engagement data, trigger via API
SendGrid
Engagement-based segmentation and automation
Sequenzy
Usage-based inactivity triggers
Verdict: All three handle re-engagement, with different strengths.
Churn Prevention
Automated outreach on cancellation signals
Mailgun
Requires full custom webhook integration
SendGrid
Possible via event-based automation
Sequenzy
Native payment failure and cancellation triggers
Verdict: Sequenzy leads with native billing awareness for churn prevention.
The Bigger Picture
Neither platform is designed for SaaS lifecycle drips. For billing-aware sequences (trial conversion, churn prevention, upgrade nudges), Sequenzy provides these capabilities natively.
Automation Builder Comparison
| Feature | Mailgun | SendGrid | Sequenzy |
|---|---|---|---|
| Visual workflow editor | No No visual automation builder | Yes Basic automation builder UI | Yes Guided SaaS sequence builder |
| API-driven automation | Yes Flexible API for custom drip logic | Yes Comprehensive REST API | Yes REST API for sequences |
| Mailing list management | Yes Built-in mailing list with unsubscribe | Yes Contact lists with segmentation | Yes Subscriber management with billing data |
| Webhook triggers | Yes Event webhooks for all email events | Yes Full event webhook system | Yes Billing and email event webhooks |
| A/B testing | Yes A/B testing for subject lines | Yes Subject and content A/B tests | Yes Subject and send-time A/B tests |
| Goal-based exit | No Not available | No Must configure manually | Yes Conversion goals tied to billing |
Email Templates & Editor
| Aspect | Mailgun | SendGrid | Sequenzy |
|---|---|---|---|
| Editor type | API-managed templates with variables | Code-based with Design Editor option | Visual editor with SaaS blocks |
| Template storage | Template API for CRUD operations | Dynamic template library | Template library with SaaS focus |
| Variable handling | Recipient variables with batch sending | Handlebars-style substitution | Billing-aware dynamic content |
| Custom HTML | Full HTML/MIME support | Full HTML/CSS control | HTML editing supported |
| Version control | Template versioning via API | No template versioning | Version history on sequences |
Deliverability Comparison
| Factor | Mailgun | SendGrid | Sequenzy |
|---|---|---|---|
| Average inbox placement | 90-94% | 93-96% | 90-94% |
| Dedicated IP | Included on Scale plan, add-on on others | Available from $89/mo | Not available |
| SPF/DKIM/DMARC | Full support with DNS verification | Full support with guided setup | Full support with guided setup |
| Email validation | Built-in validation service | Available as paid add-on | Basic validation |
| Bounce handling | Automatic suppression with webhooks | Automatic suppression with categories | Automatic bounce handling |
| IP reputation tools | Domain reputation tracking | Sender reputation dashboard | Delivery monitoring |
SendGrid edges ahead on overall deliverability with more mature infrastructure and ISP relationships. Mailgun built-in email validation helps maintain clean lists, which indirectly improves deliverability. Sequenzy focuses on SaaS-appropriate sending practices.
Integration Ecosystem
Mailgun: ~40 integrations. SendGrid: ~150. Sequenzy: ~25.
Payment/Billing
| Service | Mailgun | SendGrid | Sequenzy |
|---|---|---|---|
| Stripe | Yes (Via Zapier) | Yes (Via Zapier) | Yes (Native, real-time sync) |
| Paddle | No (Not supported) | No (Not supported) | Yes (Native, real-time sync) |
Developer Tools
| Service | Mailgun | SendGrid | Sequenzy |
|---|---|---|---|
| REST API | Yes (Comprehensive RESTful API) | Yes (Comprehensive v3 API) | Yes (Focused sequence API) |
| SMTP | Yes (Full SMTP relay support) | Yes (Full SMTP relay) | No (Not supported) |
| Webhooks | Yes (Detailed event webhooks) | Yes (Event webhooks with batching) | Yes (Billing and email webhooks) |
CRM
| Service | Mailgun | SendGrid | Sequenzy |
|---|---|---|---|
| Salesforce | Yes (Via Zapier) | Yes (Native integration) | No (Not supported) |
| HubSpot | Yes (Via Zapier) | Yes (Via Zapier) | Yes (Via webhook) |
Analytics & Reporting
| Metric | Mailgun | SendGrid | Sequenzy |
|---|---|---|---|
| Open tracking | Open rate tracking | Open tracking with trends | Per-step open tracking |
| Click tracking | Link click tracking with tags | Link-level click data | Link-level per-step tracking |
| Log retention | 30 days on Starter, longer on higher plans | 3-7 days on lower plans | Full history retained |
| Event webhooks | Real-time event data via webhooks | Batched event webhook delivery | Real-time billing and email events |
| Reporting depth | Tag-based campaign reporting | Multi-tab analytics dashboard | SaaS-focused sequence analytics |
Mailgun: Unique
- + Email validation reports
- + Inbound parsing analytics
- + Tag-based campaign grouping
SendGrid: Unique
- + ISP-level placement data
- + Marketing campaign analytics
- + Automation performance reports
Sequenzy: Unique
- + MRR impact per sequence
- + Trial-to-paid funnel
- + Churn prevention metrics
Pros & Cons
Mailgun
Pros
- + Advanced email routing and inbound parsing
- + Built-in email validation saves on third-party tools
- + Flexible API with SMTP relay support
- + Longer log retention than many competitors
- + Strong recipient variable support for batch personalization
Cons
- - No visual automation or drip builder
- - No permanent free tier (trial only)
- - Higher starting price than SendGrid
- - Marketing features are limited
- - Smaller integration ecosystem
SendGrid
Pros
- + Built-in automation builder for drip sequences
- + Permanent free tier for getting started
- + Lower starting price with more features
- + Larger integration ecosystem
- + Strong deliverability with ISP-level insights
Cons
- - Email validation is a paid add-on
- - Automation builder is basic compared to dedicated marketing tools
- - Shorter log retention on lower plans
- - Inbound parsing is less capable than Mailgun
- - Template library is limited
Best For: Who Should Use What?
Two-way email workflows
You need to process inbound replies as part of drip sequences
Mailgun advanced inbound parsing and routing is industry-leading.
Visual drip automation
You want a UI to build and manage drip sequences
SendGrid offers a built-in automation builder, while Mailgun has none.
SaaS billing-triggered drips
You need drip sequences triggered by payment events
Sequenzy provides native Stripe/Paddle integration for billing-event drips.
List cleaning and validation
You need to validate email addresses before sending drip campaigns
Mailgun includes built-in email validation at no extra cost.
Budget-conscious startup
You need drip email on a tight budget
Sequenzy $19/mo plan includes all drip features, which is the best value for SaaS-focused needs.
Migration Guide
Mailgun to SendGrid
- 1. Export mailing lists from Mailgun
- 2. Import contacts into SendGrid
- 3. Convert Mailgun templates to SendGrid dynamic templates
- 4. Rebuild drip logic in SendGrid automation builder
- 5. Configure domain authentication
- 6. Update API calls from Mailgun SDK to SendGrid SDK
Watch Out
- ! Mailgun log history will not transfer
- ! Inbound parsing routes will need to be reconfigured
- ! Email validation will require a separate add-on in SendGrid
SendGrid to Mailgun
- 1. Export contacts from SendGrid
- 2. Import into Mailgun mailing lists
- 3. Convert SendGrid templates to Mailgun API templates
- 4. Build drip orchestration in application code (no Mailgun automation UI)
- 5. Configure domain authentication
- 6. Set up Mailgun webhooks for event tracking
Watch Out
- ! All automation workflows must be rebuilt in code
- ! SendGrid marketing features have no equivalent in Mailgun
- ! Consider IP warm-up if using dedicated IP on Mailgun
The Bottom Line
Choose Mailgun if...
- ✓ You need advanced email routing and inbound parsing
- ✓ Built-in email validation is important to your workflow
- ✓ You prefer longer log retention for debugging
- ✓ Your team builds drip logic in code and wants API flexibility
Choose SendGrid if...
- ✓ You want a built-in automation builder for drip campaigns
- ✓ A permanent free tier is important for getting started
- ✓ You need a larger integration ecosystem
- ✓ You want ISP-level deliverability insights
Frequently Asked Questions
Is Mailgun or SendGrid better for drip campaigns?
SendGrid is better for drip campaigns with its built-in automation builder. Mailgun is better for infrastructure-focused teams that want email routing and validation alongside API-driven drip logic.
Does Mailgun have an automation builder?
No. Mailgun is primarily an email API and infrastructure platform. All drip campaign logic must be built in your application code using the Mailgun API.
Which is more affordable?
SendGrid has a lower starting price ($19.95/mo vs $35/mo) and a permanent free tier. Mailgun includes email validation in its pricing, which can offset the cost if you need list verification.
Can either integrate with Stripe for billing drips?
Both support Stripe via Zapier but lack native integration. For native billing-triggered drip campaigns, Sequenzy connects directly to Stripe and Paddle.
Which has better email validation?
Mailgun includes built-in email validation on all paid plans. SendGrid offers validation as a separate paid add-on. Mailgun validation is generally more cost-effective.