Infobip Email API vs Retarus Transactional Email

IEInfobip Email API7.7Visit Retarus Transactional Email6.8Visit

Higher score IE Infobip Email API #5 in Transactional Email Software 7.7/10 60-day trial ✓ 2 of 2 features Visit Infobip

vs

Retarus Transactional Email #8 in Transactional Email Software 6.8/10 Pricing on request ✓ 2 of 2 features Visit Retarus

• Infobip Email API fits best

  Enterprise teams needing inbound and compliance options

• Retarus Transactional Email fits best

  Enterprise teams needing compliance-oriented delivery

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Side by side

Feature	IEInfobip Email API 7.7/10 Visit ↗	Retarus Transactional Email 6.8/10 Visit ↗
At a glance
Editor score	7.7	6.8
Ranking	#5 in Transactional Email Software	#8 in Transactional Email Software
Best for	Enterprise teams needing inbound and compliance options	Enterprise teams needing compliance-oriented delivery
Pricing model	Paid	Paid
Starting price	Not published	Not published
Free plan	—	Not published
Free trial	—	—
Deployment	Cloud, Browser extension	Cloud, Browser extension
Platforms	Web	Web
Support	Email, Tickets, Community, Docs	Phone, Docs
Compliance	SOC 2, ISO 27001, GDPR, HIPAA	GDPR, HIPAA, PCI DSS
Integrations	4 integrations	4 integrations
Built for	Mid-market, Enterprise	Enterprise, Mid-market
Features Infobip Email API 2/2 · Retarus Transactional Email 2/2
Event webhooks	✓	✓
Dedicated IP option	✓	✓
Specs
Delivery methods	Both	Both
Template options	Both	Not published
Delivery log retention	48 days	Not published
Monthly send limit	Not published	Not published
Our review
Pros	Supports both HTTP API and SMTP delivery Combines templates, tracking, webhooks, logs, and reporting Offers inbound processing, dedicated IPs, and IP pools	Supports both REST API and SMTP delivery methods Includes callbacks, webhooks, monitoring, and delivery reporting Offers enforced TLS, dedicated IPs, and enterprise integrations
Cons	Pricing varies by country, currency, and message volume No perpetual free plan May be more than needed for basic email sending	Contact-sales pricing makes budget comparison less direct Delivery-log retention varies between monitoring and reporting functions The enterprise focus may exceed the needs of simpler sending programs
Our verdict	Infobip Email API is a cloud service for programmatic transactional and marketing email. It is designed for developers and enterprise teams sending password resets, order confirmations, alerts, bulk messages, and other… Read the review →	Retarus Transactional Email is an enterprise service for sending high-volume transactional messages from business applications. It supports REST API and SMTP delivery, making it suitable for teams connecting modern applications,… Read the review →

Strengths and trade-offs

• Infobip Email API — where it wins

  • Supports both HTTP API and SMTP delivery
  • Combines templates, tracking, webhooks, logs, and reporting
  • Offers inbound processing, dedicated IPs, and IP pools

  Where it doesn't

  • Pricing varies by country, currency, and message volume
  • No perpetual free plan
  • May be more than needed for basic email sending

• Retarus Transactional Email — where it wins

  • Supports both REST API and SMTP delivery methods
  • Includes callbacks, webhooks, monitoring, and delivery reporting
  • Offers enforced TLS, dedicated IPs, and enterprise integrations

  Where it doesn't

  • Contact-sales pricing makes budget comparison less direct
  • Delivery-log retention varies between monitoring and reporting functions
  • The enterprise focus may exceed the needs of simpler sending programs

• IEInfobip Email API7.7/10 · 60-day trial

  A programmable email service with delivery controls, inbound processing, and usage-based pricing.

  Visit InfobipFull verdict →
• Retarus Transactional Email6.8/10 · Pricing on request

  A compliance-oriented delivery service for complex enterprise messaging environments.

  Visit RetarusFull verdict →