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Target SMTP Blog

Technical guides written by people who actually run SMTP servers.

Guide

EU Digital Sovereignty: Why You Need a European ESP (Not Just for GDPR)

Digital sovereignty went from policy talking point to procurement requirement in 2024-2025. For email infrastructure specifically, the reasons go beyond GDPR.

08/05/2026 5 min read
Guide

PEC vs Signed Email vs Registered Mail: What is Legally Valid

PEC, S/MIME signed email, raccomandata A/R. Three different things, three different legal weights, three different costs. Here is what each actually proves.

05/04/2026 5 min read
Confronti

Brevo, Mailjet, Aruba: 2026 Comparison of Italian Email Providers

Brevo (ex-Sendinblue), Mailjet and Aruba are the three providers most familiar to Italian businesses. Their strengths and weaknesses are very different. Here is the 2026 breakdown.

10/03/2026 5 min read
Guide

Magento 2 SMTP: Ditch PHP mail() and Double Your Deliverability

Out of the box Magento 2 uses PHP mail(), which is a deliverability disaster. Here is how to switch to a proper SMTP setup and what to expect.

14/02/2026 4 min read
Confronti

Migrating from SendGrid: 3 Traps I have Seen at 12 Companies

I have run SendGrid migrations at a dozen companies. Three traps catch every team. Avoid them and the migration is a non-event.

22/01/2026 5 min read
Confronti

AWS SES: When NOT to Use It (and What to Pick Instead)

AWS SES is cheap and reliable for the right use case. For the wrong one it is a multi-week deliverability project disguised as a one-line API call. Here is when to walk away.

18/12/2025 5 min read
Guide

Python smtplib in Production: Timeouts, Retry, Idempotency

Python smtplib is fine for scripts. Production has different requirements. Here is the wrapper code that survives real traffic.

20/11/2025 4 min read
Guide

Black Friday E-commerce: How to Handle 100k Emails/h Without Crashing

On Black Friday, an e-commerce shop sends in 4 hours what it normally sends in a month. Order confirmations, shipping notices, abandoned cart recoveries. Here is how to survive.

04/11/2025 5 min read
Guide

Italian SdI Invoicing for Cloud Services: PEC, Recipient Codes, Tax Categories

Buying a cloud SMTP service from a foreign provider creates an SdI headache for Italian customers. Here is how it works, what to ask for and how Italian-resident providers simplify it.

22/10/2025 5 min read