AI email tools for sales fall into three categories: coaching (make your emails better), content (write emails for you), and sending (deliver emails at scale). Lavender, Regie.ai, and Instantly each dominate one category.

Quick Comparison

Feature	Lavender	Regie.ai	Instantly
Primary function	Email coaching	AI content generation	Email sending at scale
Best for	Individual reps	Content teams	High-volume outbound
AI writing	Suggestions only	Full email generation	Basic personalization
Email scoring	✅ Real-time	❌ No	❌ No
Sending infrastructure	❌ No	❌ No	✅ Best-in-class
Deliverability tools	❌ No	❌ No	✅ Warmup, rotation
Price	Free-$29/mo	$59+/mo	$30+/mo

Lavender — Best for Getting Better at Email

Lavender sits inside your email client (Gmail, Outlook) and coaches you in real-time. As you write, it scores your email on factors like length, reading level, personalization, and subject line quality. It suggests improvements and shows you data on what works.

Best for: Individual reps who want to improve their email skills. After a month of Lavender, you internalize the principles and write better emails even without the tool.

Not for: Teams that need AI to write emails from scratch or send at high volume.

Regie.ai — Best for AI-Generated Sales Content

Regie.ai generates complete email sequences, social posts, and sales content using AI. It’s designed for sales and marketing teams that need to produce content at scale — not just individual emails, but entire multi-touch campaigns.

Best for: Sales teams with dedicated enablement or content functions that need to produce sequences, templates, and campaigns quickly.

Not for: Individual reps who just need help with one-off emails (ChatGPT is cheaper and more flexible).

Instantly — Best for High-Volume Sending

Instantly is a cold email sending platform with built-in warmup, email rotation, and deliverability optimization. It’s not primarily an AI writing tool — it’s an infrastructure tool that ensures your emails actually reach inboxes.

Best for: Teams sending 200+ cold emails per day who need to manage deliverability across multiple sending accounts.

Not for: Teams sending fewer than 50 emails/day (your regular email client is fine).

Which One Do You Need?

Your situation	Get this
”I want to write better emails”	Lavender ($29/mo)
“I need AI to write emails for me”	ChatGPT ($20/mo) — seriously
”I need to send 500+ emails/day”	Instantly ($30/mo)
“I need complete campaign sequences”	Regie.ai ($59/mo)
“I need everything”	Apollo.io ($49-79/mo) — all-in-one

The honest truth: most individual reps only need ChatGPT ($20/mo) for writing and their CRM’s built-in sequencing for sending. The specialized tools are for teams with specific, high-volume needs.

🛠️ Write sales emails free: Try our Cold Email Generator or Follow-Up Sequence Generator — no signup needed.