EpsilonUnlock marketing's full potential
vs
InstantlyTurn leads into clients with automated outreach, a B2B lead database, email deliverability tools, and an AI-powered CRM.
Comparison · Email Marketing · weekly run Nov 2
Epsilon vs Instantly
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
Epsilon is the stronger AI pick in Email Marketing: it has a visibility score of 0.9 versus 0 for Instantly.
Choose Epsilon if…
- You want the brand AI engines rank higher (0.9 vs 0)
- You need ISO 27001 or SOC 2 audit for parts of the business coverage
- You prefer a larger, established vendor (5,000+ employees)
- flexible technology for high-volume programs
Choose Instantly if…
- Cost-effective platform for cold email outreach
- Strong for high-volume cold email outbound and lead generation
- Deliverability, warm-up and sending infrastructure
- Good for agencies managing many sending accounts
AI visibility side by side
Latest weekly run · Nov 2
| Metric | Epsilon | Instantly |
|---|---|---|
| Visibility score | 0.9% | 0% |
| Change vs last week | New | New |
| Rank in Email Marketing | #35 | #48 |
| Share of voice | 0.2% | 0% |
| Mentions this run | 1 | 0 |
| Positive in AI answers | — | 28% |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
Epsilon 0pp · Instantly 0pp over 0 weekly runs.
Engine by engine
Epsilon leads on 1 of 3 engines
ChatGPT
AI Mode
Perplexity
EpsilonInstantly
Head to head in AI answers
0 engine answers name both brands
0Epsilon ranked higher
0Instantly ranked higher
Features, pricing & fit
| Dimension | Epsilon | Instantly |
|---|---|---|
| Pricing model | — | Flat tiers |
| Entry price | — | $47 / mo |
| Free plan | — | No |
| Deployment | — | Web-based |
| Integrations | — | 50+ |
| Compliance | ISO 27001, SOC 2 audit for parts of the business | — |
| Support | — | Chat support, Premium live support, Dedicated account manager and shared Slack channel on Enterprise plans |
| Founded | 1969 | 2021 |
| Headquarters | Irving, Texas, United States | Sheridan, Wyoming, United States |
| Employees | 5,000+ | 51–200 |
| Funding | — | Bootstrapped |
| Best for | Brands that want personalized, omnichannel marketing run at individual level and at scale | Small teams, agencies and freelancers running cold email outbound at scale. |
Plans side by side
Epsilon
Pricing not available.
Instantly
Outreach Growth$47month
Outreach Hypergrowth$107month
Outreach Light Speed$358month
Outreach EnterpriseCustomcustom
Credits Growth$47month
Credits Supersonic$97month
Hyper Credits$197month (from)
Credits EnterpriseCustomcustom
Starter Bundle$94month
Scale Bundle$194month
Agency Bundle$555month
VIPCustomcustom
Pros and cons
Themes from the AI answers that mention each brand
Epsilon
- flexible technology for high-volume programs
- campaign operations, strategy, and creative services
Instantly
- Cost-effective platform for cold email outreach
- Strong for high-volume cold email outbound and lead generation
- Deliverability, warm-up and sending infrastructure
- Good for agencies managing many sending accounts
- Highest G2 rating among sales engagement platforms
- Narrow focus on cold email rather than an all-in-one platform
- Not a complete CRM or full sales engagement suite
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run
Cite as: SlateIndex, “Epsilon vs Instantly”, https://slateindex.ai/compare/epsilon-vs-instantly, data of Nov 2, 2026. Licence: CC BY 4.0.