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What Is an SMTP Server? How SMTP Relay Works and Why You Need It

An SMTP server (Simple Mail Transfer Protocol) is the dedicated server that handles outgoing email. When your application, CRM or...

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Why Does My Email Look Strange on Outlook?

Outlook is the email client most likely to make your beautiful campaign look broken — clipped images, lost background colors,...

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What Is IP Reputation and Why Does It Matter?

IP reputation is the trust score that mailbox providers (Gmail, Yahoo, Outlook, Apple Mail) assign to the IP address that...

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File Sizes and Extensions Supported by Mailpro Builder

The Mailpro Builder accepts a wide range of file types for images, attachments and downloadable resources. Each type has a...

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MSISDN: Definition and Format (CC+NDC+SN)

MSISDN stands for Mobile Station International Subscriber Directory Number. It is the worldwide format your SMS gateway uses to identify...

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How to Schedule an SMS Campaign with Mailpro

Scheduling an SMS campaign in Mailpro lets you prepare the message in advance and have it delivered at the exact...

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How to Import Your SMS Phone List

Before launching your first SMS campaign in Mailpro, you need to import your phone list correctly. Follow these steps to...

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How to Send an Email as SMS with Mailpro: Gateway Guide

Mailpro’s Email-to-SMS gateway lets you trigger an SMS just by sending an email. The gateway converts the email into a...

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How to Personalize Your SMS With Mailpro

Personalized SMS messages outperform generic ones by 2–4× on click and reply rates. Mailpro’s SMS platform supports merge tags so...

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Country Phone Codes List for SMS Marketing

To send an SMS through Mailpro, every mobile number in your contact list must be in international (E.164) format: a...

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How to Use Mailpro’s Double Opt-In Functionality

Activating Mailpro’s double opt-in feature is the safest way to grow a clean, GDPR-compliant subscriber list. This guide walks you...

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What Is a Double Opt-in Subscription?

Double opt-in is the subscription process where a new subscriber must confirm their email address by clicking a link in...

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How to Configure DMARC With Mailpro: 5-Step Safe Rollout

Setting up a DMARC record with Mailpro is the third pillar of email authentication, after SPF and DKIM. Done right,...

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What Is a DMARC Record and How to Use It?

DMARC (Domain-based Message Authentication, Reporting and Conformance) is the email authentication standard that ties SPF and DKIM together and tells...

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How to Configure DKIM With Mailpro: 4 Easy Steps

Configuring DKIM with Mailpro takes about ten minutes and pays off immediately: signed messages, higher inbox placement and protection against...

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What Is a DKIM Record?

DKIM (DomainKeys Identified Mail) is an email authentication method that lets a sender attach a cryptographic signature to every outgoing...

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How to Configure SPF With Mailpro: 5-Step Guide

Configuring SPF with Mailpro is a 5-minute job that pays off immediately: better inbox placement, fewer bounces and protection against...

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What Is SPF (Sender Policy Framework)?

SPF (Sender Policy Framework) is an email authentication standard that lets a domain owner publish a list of servers authorized...

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What Kind of Cookies Does Mailpro Use?

Mailpro’s public website uses cookies for three purposes: remembering your preferences, measuring traffic anonymously, and tracking advertising effectiveness. The Mailpro...

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Your GDPR Rights: 8 Ways to Control Your Personal Data

Under GDPR, you have a clear set of rights over the personal data we hold on you. Most can be...

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