toolgrep / Email & messaging / MailSenpai
Alternatives to MailSenpai
MailSenpai: Email marketing and B2B outreach platform for SMEs and freelancers, with a separate SMTP relay service (SMTP Senpai) for transactional email. 8 products similar to MailSenpai, compared on pricing, free tier, API, MCP server, SDK and open source. 8 of 8 have a free tier, 8 of 8 have an API, 6 of 8 offer an MCP server.
- Mailcheer
Email marketing platform for newsletters and campaigns with a public API and MCP server
- Mailjet
Email marketing software and email API for marketing and transactional email
- MailerSend
Transactional email, SMS, and WhatsApp delivery service with a REST API and SMTP relay
- Mailzzy
Email marketing and automation platform with AI-assisted copywriting, subject line generation, and send-time optimization.
- Mailtrap
Email delivery platform for developer and product teams: Email API/SMTP sending, email testing sandbox, and email marketing.
- Maildroppa
Email marketing platform for small businesses with newsletters, signup forms, and automations
- EmailLabs
Cloud-based SMTP service and email API for sending and tracking transactional and marketing emails
- Sending
MCP-native messaging orchestration for email, WhatsApp and Telegram
Side by side
| Product | Pricing | Free tier | API | MCP server | SDK | Open source |
|---|---|---|---|---|---|---|
| MailSenpai | Freemium · from 13.49 EUR/month (annual billing, marketing platform); 12.90 EUR/month (SMTP Senpai, annual billing); free 30-day trial and permanent SMTP free tier of 5,000 emails/month | yes | yes | yes | yes | no |
| Mailcheer | Freemium · from €0/month (3,000 emails/month free); paid plans €19, €49, €129 per month | yes | yes | yes | yes | no |
| Mailjet | Freemium | yes | yes | yes | yes | no |
| MailerSend | Freemium | yes | yes | yes | yes | no |
| Mailzzy | Freemium · from $9.00/month | yes | yes | yes | — | no |
| Mailtrap | Freemium · from $15 | yes | yes | yes | yes | no |
| Maildroppa | Freemium · from USD 5/month | yes | yes | no | — | no |
| EmailLabs | Freemium · from 0 PLN/month (Startup plan, up to 9,000 emails/month, 300 emails/day limit); paid plans from 99 PLN/month (Essential 30, up to 100,000 emails/month) | yes | yes | no | yes | no |
| Sending | Freemium · from €0/mo (free tier: 3,000 emails/mo) | yes | yes | yes | yes | no |
Facts come from each product's own website, or from its verified owner when they have edited the listing. Each product page shows when it was last verified and how it was extracted. Similarity comes from the products' descriptions.
API
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