B · Infrastructure · Email & Messaging Infrastructure
SMTP Servers
Managed SMTP servers handle the sending side of permission-based email, from authentication to queueing and bounce processing. Compare whether IPs are dedicated or shared, what sending limits apply and how the provider monitors reputation and complaints.
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Buyer guide
- Confirm authentication records are configured for your domains before sending.
- Check sending limits and throttling against your peak volume.
- Make sure the provider requires opt-in lists and processes unsubscribes and complaints.
What to compare
- 01Dedicated vs shared IPs
- 02SPF, DKIM and DMARC setup
- 03Hourly and daily sending limits
- 04Bounce and complaint processing
- 05Reputation monitoring
Use cases
- Transactional email
- Newsletter delivery to opted-in subscribers
FAQ
Do I need my own SMTP server or an email service provider?
A managed SMTP server gives more control over IPs and configuration; an ESP adds templates, list management and reporting. Many teams pair an SMTP backend with separate sending software.