SendGrid vs Loops
A detailed comparison to help you choose between SendGrid and Loops.
Quick Verdict
4.3/5
SendGrid
166 reviews
4.9/5
Loops
240 reviews
Loops is rated higher (4.9 vs 4.3). SendGrid by Twilio handles both transactional and marketing email at massive scale. REST API, SMTP relay, webhook events, and dedicated IP warming. Used by Uber, Airbnb, and Spotify. Loops is an SMTP relay service that handles transactional emails with high deliverability. Designed for developers and SaaS platforms needing reliable email infrastructure without managing their own servers.
SendGrid Twilio's email API for developers at scale | Loops SMTP service built for transactional email at scale | |
|---|---|---|
| Overview | ||
| Rating | 4.3 (166 reviews) | 4.9 (240 reviews)✓ |
| Pricing model | freemium | freemium |
| Starting price | Free tier available | Free tier available |
| Best for | Developers building apps that send transactional and marketing email at scale via API | SaaS teams and developers needing dependable transactional email delivery without the overhead of self-hosted SMTP infrastructure. |
| Tags | ||
| Tags | free tierapi access | free tierapi access |
| Visit SendGrid → | Visit Loops → | |
SendGrid
Pros
- + Industry-standard email API
- + High volume sending — millions per day
- + 100 free emails/day forever
Cons
- - Customer support can be slow
- - Account suspension risk if complaint rates high
Loops
Pros
- + Send transactional emails reliably without maintaining SMTP infrastructure
- + Monitor delivery metrics and bounce rates in real-time dashboard
- + Integrate quickly via standard SMTP or REST API
- + Auto-handle bounces and manage sender reputation
- + Scale from thousands to millions of emails per month
Cons
- - Limited advanced segmentation compared to full marketing platforms
- - Smaller provider means fewer third-party integrations than competitors
- - Pricing scales linearly, less cost-effective at extremely high volumes
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