Mailgun vs SendGrid for Drip Email Campaigns (2026)
Compare Mailgun and SendGrid for drip email automation. API features, deliverability, pricing, and automation capabilities analyzed.
TL;DR verdict
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.
Mailgun
7.3/70
Best for developers who need advanced email routing and parsing alongside drip.
SendGrid
7.7/70
Best for teams wanting built-in automation with proven infrastructure.
Sequenzy · also consider
8.3/70
Best for SaaS drip emails with native Stripe/Paddle/Lemon Squeezy billing triggers.
Sequenzy email automation for SaaS → · from $19/month
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.
Quick comparison
| Feature | Mailgun | SendGrid | Sequenzy | Winner |
|---|---|---|---|---|
| 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/Lemon Squeezy triggers | Sequenzy |
| Free tier | 3-month trial only | 100 emails/day forever | Free tier available; paid from $19/mo (check current limits) | SendGrid |
Score breakdown
| Category | Mailgun | SendGrid | Sequenzy | Max |
|---|---|---|---|---|
| Drip Campaign Builder | 5 | 7 | 9 | 10 |
| Automation Flexibility | 6 | 7 | 8 | 10 |
| Deliverability | 8 | 9 | 8 | 10 |
| Developer Experience | 8 | 7 | 7 | 10 |
| Pricing Value | 7 | 7 | 8 | 10 |
| Analytics & Reporting | 7 | 8 | 8 | 10 |
| Integration Ecosystem | 6 | 8 | 7 | 10 |
| Total | 47 | 53 | 55 | 70 |
Drip feature deep-dive
Sequence Building
| Capability | 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
| Capability | 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
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.
Mailgun free option
3-month trial, 5,000 emails/mo (no permanent free plan)
Free trial, paid plans from $35/mo
SendGrid free option
100 emails/day forever (about 3,000/mo)
Free tier available, paid plans from $19.95/mo
Sequenzy free option
Free tier available; paid from $19/mo (check current limits)
From $19/month
| 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 |
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.
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
Welcome/Onboarding Drip
Winner: SequenzyAutomated onboarding sequence for new users
5/10 · Mailgun
Must be built via API with scheduled sends
7/10 · SendGrid
Automation builder with basic welcome flow
9/10 · Sequenzy
Pre-built SaaS onboarding sequences
Sequenzy provides the fastest path to working onboarding drips.
Trial-to-Paid Conversion
Winner: SequenzySequences to convert trial users
4/10 · Mailgun
Custom API integration for billing triggers
6/10 · SendGrid
Event-based automation, billing requires custom work
9/10 · Sequenzy
Native Stripe/Paddle/Lemon Squeezy trial conversion triggers
Sequenzy is purpose-built for trial conversion with billing data.
Transactional Follow-up
Winner: SequenzyFollow-up emails after transactional events
8/10 · Mailgun
Strong API for triggered transactional sequences
7/10 · SendGrid
Transactional API with automation layer
7/10 · Sequenzy
Billing-event follow-up sequences
Mailgun and SendGrid are both strong for transactional follow-up.
Re-engagement Drip
Winner: SequenzyWin back inactive users
6/10 · Mailgun
Segment via engagement data, trigger via API
7/10 · SendGrid
Engagement-based segmentation and automation
8/10 · Sequenzy
Usage-based inactivity triggers
All three handle re-engagement, with different strengths.
Churn Prevention
Winner: SequenzyAutomated outreach on cancellation signals
4/10 · Mailgun
Requires full custom webhook integration
5/10 · SendGrid
Possible via event-based automation
9/10 · Sequenzy
Native payment failure and cancellation triggers
Sequenzy leads with native billing awareness for churn prevention.
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 & editor
Builder features
| Feature | Mailgun | SendGrid | Sequenzy |
|---|---|---|---|
| Visual workflow editor | — No visual automation builder | ✓ Basic automation builder UI | ✓ Guided SaaS sequence builder |
| API-driven automation | ✓ Flexible API for custom drip logic | ✓ Comprehensive REST API | ✓ REST API for sequences |
| Mailing list management | ✓ Built-in mailing list with unsubscribe | ✓ Contact lists with segmentation | ✓ Subscriber management with billing data |
| Webhook triggers | ✓ Event webhooks for all email events | ✓ Full event webhook system | ✓ Billing and email event webhooks |
| A/B testing | ✓ A/B testing for subject lines | ✓ Subject and content A/B tests | ✓ Subject and send-time A/B tests |
| Goal-based exit | — Not available | — Must configure manually | ✓ Conversion goals tied to billing |
Template 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
| 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.
Integrations
Mailgun
40+
SendGrid
150+
Sequenzy
25+
Payment/Billing
Mailgun
- ✓ Stripe: Via Zapier
- — Paddle: Not supported
SendGrid
- ✓ Stripe: Via Zapier
- — Paddle: Not supported
Sequenzy
- ✓ Stripe: Native, real-time sync
- ✓ Paddle: Native, real-time sync
Developer Tools
Mailgun
- ✓ REST API: Comprehensive RESTful API
- ✓ SMTP: Full SMTP relay support
- ✓ Webhooks: Detailed event webhooks
SendGrid
- ✓ REST API: Comprehensive v3 API
- ✓ SMTP: Full SMTP relay
- ✓ Webhooks: Event webhooks with batching
Sequenzy
- ✓ REST API: Focused sequence API
- — SMTP: Not supported
- ✓ Webhooks: Billing and email webhooks
CRM
Mailgun
- ✓ Salesforce: Via Zapier
- ✓ HubSpot: Via Zapier
SendGrid
- ✓ Salesforce: Native integration
- ✓ HubSpot: Via Zapier
Sequenzy
- — Salesforce: Not supported
- ✓ HubSpot: 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 |
Only in Mailgun
- Email validation reports
- Inbound parsing analytics
- Tag-based campaign grouping
Only in SendGrid
- ISP-level placement data
- Marketing campaign analytics
- Automation performance reports
Only in Sequenzy
- MRR impact per sequence
- Trial-to-paid funnel
- Churn prevention metrics
Pros and 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 these scenarios
Two-way email workflows
Pick: MailgunYou need to process inbound replies as part of drip sequences
Mailgun advanced inbound parsing and routing is industry-leading.
Visual drip automation
Pick: SendGridYou want a UI to build and manage drip sequences
SendGrid offers a built-in automation builder, while Mailgun has none.
SaaS billing-triggered drips
Pick: SequenzyYou need drip sequences triggered by payment events
Sequenzy provides native Stripe, Paddle, and Lemon Squeezy integration for billing-event drips.
List cleaning and validation
Pick: MailgunYou need to validate email addresses before sending drip campaigns
Mailgun includes built-in email validation at no extra cost.
Budget-conscious startup
Pick: SequenzyYou 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 plans
Mailgun → SendGrid
Difficulty: Moderate
Time: 1-3 days
Warnings
- 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 → Mailgun
Difficulty: Moderate
Time: 2-3 days
Warnings
- 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
| Direction | Step | Success criteria |
|---|---|---|
| Mailgun → SendGrid | Export mailing lists from Mailgun | Moderate |
| Mailgun → SendGrid | Import contacts into SendGrid | Moderate |
| Mailgun → SendGrid | Convert Mailgun templates to SendGrid dynamic templates | Moderate |
| Mailgun → SendGrid | Rebuild drip logic in SendGrid automation builder | Moderate |
| Mailgun → SendGrid | Configure domain authentication | Moderate |
| Mailgun → SendGrid | Update API calls from Mailgun SDK to SendGrid SDK | Moderate |
| SendGrid → Mailgun | Export contacts from SendGrid | Moderate |
| SendGrid → Mailgun | Import into Mailgun mailing lists | Moderate |
| SendGrid → Mailgun | Convert SendGrid templates to Mailgun API templates | Moderate |
| SendGrid → Mailgun | Build drip orchestration in application code (no Mailgun automation UI) | Moderate |
| SendGrid → Mailgun | Configure domain authentication | Moderate |
| SendGrid → Mailgun | Set up Mailgun webhooks for event tracking | Moderate |
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, Paddle, and Lemon Squeezy.
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.
Which should you choose?
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
Also consider Sequenzy
Best for SaaS drip emails with native Stripe/Paddle/Lemon Squeezy billing triggers. From $19/month with native Stripe, Paddle, and Lemon Squeezy billing events for dunning and trial conversion.
Related comparisons
Browse the full comparison library, the 15-tool shortlist, or the drip strategy guides.