Best Transactional Email software

The Free Forever plan includes 15,000 emails per month to 2,500 subscribers with no daily sending limits — and it never expires or requires a credit card

Premium features aren't gated behind upgrades: automation, unlimited segmentation, 100+ templates, transactional emails, and landing pages are all available on the free tier

The free plan caps at 2,500 subscribers and 15,000 emails per month and displays Sender branding until you upgrade

Quoted prices exclude VAT, which varies by country — 19% in Germany and 20% in France, for example

Owns its IP space, vets every applicant, and enforces a zero-spam policy — credentials the site says earned it Certified Senders Alliance certification, so deliverability claims are tied to verifiable practices rather than marketing copy.

All infrastructure sits in Europe (Germany, the Netherlands, Finland, and France) with GDPR-compliant redundancy, making it a practical fit for teams with strict EU data residency requirements.

Monthly quotas are hard caps — extra emails won't send until the quota resets or you upgrade, and while paying customers get a 12% buffer, senders with unpredictable spikes can hit a wall mid-campaign.

Hourly sending limits apply, and raising them requires a dashboard request that goes through review, so instant high-volume bursts aren't guaranteed on demand.

SPF and DKIM are managed automatically for your domains, removing the most common cause of self-inflicted deliverability failures

Supports sending from both applications and Outlook, so developers and non-technical staff can share one delivery platform

Published pricing tiers top out at $750/month, so very high-volume senders may need to negotiate custom arrangements or look elsewhere

The feature set centers on delivery itself; teams wanting deep marketing automation, advanced segmentation, or rich campaign analytics may find it thinner than dedicated marketing platforms

Deliverability is backed by more than 20 years of sender reputation with mailbox providers, which directly affects whether confirmations, alerts, and notifications reach inboxes

Expert support is included on every pricing tier — even the $25/month Essential plan — with customer quotes citing fast chat and phone service

The Insight Engine and Reputation Defender add-ons each add 20% to your plan price — $5/month extra on the $25 Essential tier — which raises total cost for features some competitors bundle

No free trial or refund policy is published on the site, so you must confirm trial and refund terms with sales before committing