toolgrep / APIs & backend / Lob
Alternatives to Lob
Lob: Direct mail automation platform with print network and address verification APIs. 8 products similar to Lob, 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, 1 of 8 is open source.
- EasyPost
The Simple Shipping API
- Reloop
Open-source email API and infrastructure for developers: transactional email, SMTP relay, campaigns, webhooks, and agent inboxes.
- Mailtrap
Email delivery platform for developer and product teams: Email API/SMTP sending, email testing sandbox, and email marketing.
- emailvalidation.io
Free email checker and validator: verify any email address with syntax, MX record and live mailbox checks, validate lists in bulk or use the API.
- Revdoku
Email address for your AI agent to receive emails, send replies and store files, with virus and spam filters and prompt-injection labels. API, MCP, CLI.
- EmailLabs
Cloud-based SMTP service and email API for sending and tracking transactional and marketing emails
- Loops
Email platform for SaaS: marketing and transactional email from one product
- Mailjet
Email marketing software and email API for marketing and transactional email
Side by side
| Product | Pricing | Free tier | API | MCP server | SDK | Open source |
|---|---|---|---|---|---|---|
| Lob | Freemium · from $0/month (Developer plan); paid plans from $260/month plus per-piece print & postage costs | yes | yes | no | yes | no |
| EasyPost | Freemium | yes | yes | no | yes | no |
| Reloop | Freemium · from $0 | yes | yes | yes | yes | yes |
| Mailtrap | Freemium · from $15 | yes | yes | yes | yes | no |
| emailvalidation.io | Freemium | yes | yes | yes | yes | no |
| Revdoku | Freemium · from $0 | yes | yes | yes | yes | 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 |
| Loops | Freemium · from $0 | yes | yes | yes | yes | no |
| Mailjet | Freemium | 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
curl https://toolgrep.com/api/products/lob/alternatives