Email is still one of the most effective marketing channels for SaaS — whether you’re driving user activation in PLG flows or nurturing outbound leads.
Here’s a breakdown of the top SaaS email marketing agencies in 2025 that can help you scale onboarding, outbound, and lifecycle campaigns.
Why Email Still Works in SaaS
Email drives results when it’s tightly aligned with your ICP and product use case:
- Lifecycle emails boost retention and expansion
- Cold email drives pipeline when targeted correctly
- Onboarding sequences reduce churn in PLG motions
Read: Cold Email Strategy That Converts in 2025
1. SaaS Consult
Best for: SaaS teams who want email marketing tightly integrated into their GTM motion
SaaS Consult blends email strategy with positioning and channel selection — not just templates and tools.
Services:
- Cold email + outbound setup
- Lifecycle & onboarding strategy
- PLG and sales-assisted flows
- ICP-based personalization and copy
Related:
2. Belkins
Best for: B2B outbound lead gen via cold email
Belkins offers SDR-as-a-service and specializes in booking demos using cold outreach at scale. They’re ideal for SaaS companies with outbound-heavy GTM.
Website: https://belkins.io/
3. Inbox Collective
Best for: Lifecycle and content email for SaaS and media
Led by Dan Oshinsky, Inbox Collective helps SaaS companies build newsletters, onboarding emails, and retention flows.
Focus Areas:
- Welcome series and engagement emails
- Newsletter strategy and audits
- Retention campaign planning
Website: https://inboxcollective.com/
4. Salesfolk
Best for: Cold email copywriting and outbound messaging
Salesfolk is one of the most experienced cold email copywriting teams. They’ve worked with SaaS firms across verticals to create outbound campaigns that convert.
Website: https://www.salesfolk.com/
5. Cleverly
Best for: Combining LinkedIn outreach with cold email
Cleverly blends LinkedIn lead gen with email workflows, ideal for SaaS companies running ABM or outbound sales campaigns in tech.
Website: https://www.cleverly.co/
6. Market 8
Best for: Full-funnel inbound and email for SaaS
Market 8 helps SaaS companies create high-converting inbound funnels, including lead nurturing, drip sequences, and email content for MQL to SQL transitions.
Website: https://www.market8.net/
7. Instantly.ai (Tool, not an agency)
Note: Instantly isn’t an agency, but it’s widely used by SaaS teams to manage cold email at scale with inbox rotation, domain warmup, and high deliverability.
Use cases:
- Early-stage SaaS running lean outbound
- SDRs managing outreach with internal teams
Website: https://instantly.ai/
How to Pick the Right Email Partner
Ask these questions:
- Are they focused on SaaS?
- Do they understand both PLG and sales-led models?
- Will they customize messaging for ICPs?
- Do they integrate with your CRM and tools?
FAQ: Email Marketing for SaaS
How many domains should I use for cold email?
Most outbound programs start with 2–4 domains and rotate across inboxes for better deliverability.
What tools do these agencies use?
SaaS-focused email marketing agencies often use Instantly, Smartlead, Apollo, Maildoso, or HubSpot depending on goals.
How much does a SaaS email agency cost?
Budgets vary from $1,500/month (freelance execution) to $10,000+/month for full-service GTM email with SDRs.
How does email fit into SaaS GTM?
Email supports user activation, retention, and outbound pipeline — all GTM motions benefit when email is built into the funnel.
Final Note
Your emails are only as strong as your positioning and timing. Choose a partner that understands your motion, audience, and product context.
Need help aligning email with your GTM strategy? Work with SaaS Consult