ApolloThe AI GTM System for Go-to-Market Teams
vs
MailgunTransactional Email API Service For Developers
Comparison · Email Marketing · weekly run Nov 2
Apollo vs Mailgun
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
Mailgun is the stronger AI pick in Email Marketing: it has a visibility score of 0.9 versus 0.4 for Apollo.
Choose Apollo if…
- AI answers describe it more positively (60% vs 0% positive)
- You need GDPR or SOC 2 or CCPA or CASA Tier 2 or CPRA or EU-US DPF or PCI DSS coverage
- You prefer a larger, established vendor (501–1,000 employees)
- Per seat pricing suits your budget better than usage-based
Choose Mailgun if…
- You want the brand AI engines rank higher (0.9 vs 0.4)
- You need SOC 2 Type II or ISO 27701 or GDPR compliant or HIPAA compliant or PCI-compliant SAQ-A merchant coverage
- Usage-based pricing suits your budget better than per seat
- recommended for sending larger volumes programmatically
AI visibility side by side
Latest weekly run · Nov 2
| Metric | Apollo | Mailgun |
|---|---|---|
| Visibility score | 0.4% | 0.9% |
| Change vs last week | New | New |
| Rank in Email Marketing | #40 | #36 |
| Share of voice | 0.3% | 0.2% |
| Mentions this run | 1 | 1 |
| Positive in AI answers | 60% | 0% |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
Apollo 0pp · Mailgun 0pp over 0 weekly runs.
Engine by engine
Mailgun leads on 2 of 3 engines
ChatGPT
AI Mode
Perplexity
ApolloMailgun
Head to head in AI answers
0 engine answers name both brands
0Apollo ranked higher
0Mailgun ranked higher
Features, pricing & fit
| Dimension | Apollo | Mailgun |
|---|---|---|
| Pricing model | Per seat | Usage-based |
| Entry price | Contact sales | Free; paid from $15 / mo |
| Free plan | Yes | Yes |
| Deployment | Cloud platform | Cloud, hosted in US and EU regions |
| Integrations | 200+ | — |
| Compliance | GDPR, SOC 2, CCPA, ISO/IEC 27001, CASA Tier 2, CPRA, EU-US DPF, PCI DSS | SOC 2 Type II, ISO/IEC 27001, ISO 27701, GDPR compliant, HIPAA compliant, PCI-compliant SAQ-A merchant |
| Support | Email support at support@apollo.io, Dedicated support on Custom plans, Sales team for Custom plan discussions | Knowledge Center, Documentation, Ticket support, Chat support on higher plans |
| Founded | 2015 | 2010 |
| Headquarters | San Francisco, CA | — |
| Employees | 501–1,000 | 201–500 |
| Funding | Series D · $250M raised | Growth investment (Thoma Bravo) · $51M raised |
| Best for | Sales and go-to-market teams that run prospecting, outreach and dialing and want data, AI and execution in one system | Developers and engineering teams that need to send transactional and marketing email through an API |
Plans side by side
Mailgun
Free$0month
Basic$15month (10,000 emails included)
Foundation$35month (50,000 emails included)
Scale$90month (100,000 emails included)
EnterpriseCustomcustom
Pros and cons
Themes from the AI answers that mention each brand
Apollo
- Large B2B contact database combined with prospecting and email sequencing
- Transparent self-serve per-user pricing with a free tier
- Strong all-in-one value for prospecting and outreach
- Affordable, reliable choice for small teams and startups
- Widely used and highly rated by reviewers
Mailgun
- recommended for sending larger volumes programmatically
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run
Cite as: SlateIndex, “Apollo vs Mailgun”, https://slateindex.ai/compare/apollo-vs-mailgun, data of Nov 2, 2026. Licence: CC BY 4.0.