28 Oct 2026 · TrustList Editorial
Gemini API now stores requests by default for new paid projects
From 26 October, new paid-tier projects log generateContent prompts and responses for up to 55 days unless they opt out. Existing projects…
10 transactional email software ranked by rating, review volume and listing quality.
Between them, the 10 transactional email software on this page cover Reporting/Analytics (9), template management (8), dynamic content (6) and list management (6). 10 of them have written a profile you can read before you get in touch.

Template Management
Amazon SES, short for Simple Email Service, is an email sending and receiving service from Amazon Web Services.

Template Management · Dynamic Content · List Management
Recommend is a personalisation platform for retailers. It collects insight into shopping behaviour across channels and uses predictions and analysis of browsing history to tailor…

Template Management · Dynamic Content · List Management
MailerSend is a transactional email service designed so that several teams can work on it together.

List Management · Reporting/Analytics
Coresender is an email delivery service for transactional and marketing mail. Companies can use it instead of running their own mail infrastructure.

Template Management · Dynamic Content · Spam Check
Flowmailer is a transactional email specialist that also offers an SMS API.

Template Management · List Management · Spam Check
EmailLabs is an email delivery service built around an email API. Customers can track, send and receive email through it.

Template Management · Dynamic Content · List Management
Zulu Trusted Sender is an automated email reputation management service and SMTP email gateway.

Spam Detection · Spam Blocker · Reporting/Analytics
MailChannels provides transactional email delivery and outbound filtering for platforms with many separate senders, such as hosting companies, SaaS apps and AI-agent businesses.

Template Management · Dynamic Content · List Management
MassMailer is a bulk email tool for Salesforce CRM users. It removes the sending limits that Salesforce places on mass email, and it can verify addresses and white-label the…

Template Management · Dynamic Content · Spam Check
Mailchimp Transactional Email (formerly Mandrill) is a delivery service for developers who need their websites and applications to send triggered messages.
For vendors
The order is earned on evidence: client reviews, vetting, awards and the facts a business states on its own website, which we read and date. Nobody can pay to move up. Add reviews or verified facts to your free profile to move up at the next edition; there are two ways to stand out now, and each one says what it is.
Not on TrustList yet? Add your product or claim its listing, free.
Free
Paid · always labelled
Every other way we rank transactional email software, by what they do and where they are.
The newest guides and analysis from TrustList Insights.
28 Oct 2026 · TrustList Editorial
From 26 October, new paid-tier projects log generateContent prompts and responses for up to 55 days unless they opt out. Existing projects…
28 Oct 2026 · TrustList Editorial
Merchants see warnings from 15 January and the Admin API refuses the old tokens with HTTP 403 from 1 April 2027. A new client credentials…
28 Oct 2026 · TrustList Editorial
One advisory groups the findings of an internal review into eight CVEs by weakness class, two rated 9.8. Release 15SU5 fixes them; release…
Jump to another ranked category.
Everything here links back to the same verified catalogue. Pick your next stop.