Instantly.ai vs MailerLite
Use Instantly.ai for B2B cold-email outreach; use MailerLite for newsletters and automated marketing to people who have given permission to receive them. Instantly focuses on sending across multiple email accounts, warmup and prospecting workflows. MailerLite focuses on subscriber campaigns, signup forms, landing pages and digital products. The deciding question is whether you need to contact prospects or grow an opted-in audience.
Last updated October 24, 2026.
At a glance
| Dimension | Instantly.ai | MailerLite |
|---|---|---|
| Primary use | B2B prospecting and cold-email outreach | Subscriber email marketing and newsletters |
| Cold-email policy | Cold-email outreach workflows | Cold email without consent prohibited |
| Campaign automation | Outreach sequences and scheduling | Subscriber automations and newsletters |
| Audience-building tools | B2B lead database on Credits plans | Signup forms and landing pages |
| Email warmup | Unlimited accounts and warmup on paid Outreach plans | Not available |
| Starting paid price | Outreach Growth: $47/month | Comfort: from $12/month |
| Free access | Outreach free trial | Free plan: 250 subscribers |
| Entry-level sending limit | Growth: 5,000 emails/month | Free: 2,500 emails/month |
| Entry-level audience limit | Growth: 1,000 uploaded contacts | Free: 250 subscribers |
| Integrations | API and webhooks; webhooks on Hypergrowth or above | 100+ integrations; API access |
| Support | Growth: chat support | Free: knowledge base; Power: live chat and email |
| Platforms | Web app | Web app; iPad Subscribe App |
Scroll the table sideways to compare each row.
Which should you choose?
Choose Instantly.ai if
- B2B sales teams contacting prospects
- Agencies managing multiple sending accounts
- Teams that need email warmup and outreach sequences
- Teams building workflows around prospect replies
Choose MailerLite if
- Businesses emailing opted-in subscribers
- Creators publishing newsletters or selling digital products
- Teams collecting signups through forms and landing pages
- Small lists that fit the free plan
The verdict
Pick Instantly.ai if your team runs cold outreach and needs multiple sending accounts, warmup and follow-up sequences. Pick MailerLite if you need to collect subscribers and send them newsletters or automated campaigns. MailerLite explicitly prohibits cold email without consent, so price alone should not decide between these tools.
Instantly.ai vs MailerLite: common questions
- Can I use MailerLite for cold outreach?
- No. MailerLite says its anti-spam policy prohibits cold email to people who have not given explicit, provable consent. Instantly.ai is built for B2B cold-email outreach.
- Which is better for newsletters?
- MailerLite is the better fit for newsletters to opted-in subscribers because it provides newsletter editors, signup forms and subscriber automations. Instantly.ai focuses on prospecting and outreach sequences.
- Which costs less to start?
- MailerLite publishes a free plan for up to 250 subscribers and 2,500 emails per month; its Comfort plan starts at $12 per month. Instantly.ai offers an Outreach free trial, and its paid Outreach Growth plan costs $47 per month.
- Does Instantly.ai include unlimited sending?
- No. Instantly.ai says its paid Outreach plans include unlimited email accounts and warmup, but monthly sending limits still apply. Outreach Growth includes 5,000 emails per month.
- Which has higher entry-level sending limits?
- Instantly.ai Outreach Growth includes 5,000 emails per month and a fixed limit of 1,000 uploaded contacts. MailerLite’s Free plan includes 2,500 emails per month for up to 250 subscribers. These are different audience limits, not interchangeable measures.
- Which helps me collect new subscribers?
- MailerLite provides signup forms and landing pages for collecting subscribers. Instantly.ai offers B2B lead-finding through its separately priced Credits plans.
- Can I connect either tool to other software?
- Yes. Instantly.ai publishes API and webhook options, with webhooks available on Hypergrowth or above. MailerLite publishes more than 100 integrations and API access.
- What support comes with each product?
- Instantly.ai lists chat support on Outreach Growth and premium live support on Hypergrowth. MailerLite lists knowledge-base support on Free, email support on Comfort, and live chat plus email support on Power.