APIs
Twilio SendGrid
Email
Active 24/7
Overview
SendGrid is a cloud-based email delivery platform for transactional and marketing emails.
Permanent Free Tier
Free tier includes 100 emails per day forever.
Hard Limits
- 100 emails/day
- 1 month data retention
Strengths
- High deliverability
- Mature platform
- Good analytics
- Reliable
Limitations
- Requires credit card
- Daily limits
- UI complexity
Best For
High VolumeEnterpriseDeliverability
Reserved Ad Space