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Questions most frequently asked:
What is a dedicated IP?
A dedicated IP is an IP address used exclusively by a single Mailpro sender. Unlike a shared IP, where reputation...
Read moreWhy isn´t my form online anymore?
If your Mailpro form has suddenly stopped working, the most common cause is that your subscription has expired or your...
Read moreWhat Is SMTP Error 554 and How to Fix It?
SMTP error 554 is a permanent rejection: the recipient server refused to accept your email. The good news? Once you...
Read moreIs SMTP protocol reliable?
Yes — SMTP is one of the most reliable application protocols on the internet. It runs over TCP, supports retries,...
Read moreWhich SMTP port to use?
SMTP uses several ports, but only two of them really matter for sending email today: 587 (with STARTTLS) and 465...
Read moreHow Does the Mailpro API Work?
Mailpro’s API lets developers send transactional and marketing emails directly from their software, without going through the web interface. Access...
Read moreWhat is a drag and drop editor?
A drag-and-drop editor is a visual newsletter builder where you assemble an email by dragging blocks — text, images, buttons,...
Read moreHow can I increase my opening rate?
Open rate goes up when three things line up: the right person, the right inbox, and a subject line worth...
Read moreWhat are some common email marketing metrics?
The metrics that matter in email marketing all answer the same question: did your message reach the right people, and...
Read moreHow do you get your Mailpro account validated?
Validating your Mailpro account is the step that turns your trial into a fully active sender account — lifting send...
Read moreHow to write a great email subject line?
The subject line is the only sentence that decides whether your email gets opened. A great one is short, specific...
Read moreWhat is the best day to send my newsletter?
The honest answer: there is no universal best day — only a best day for your audience. Industry studies put...
Read moreShould I segment my email list?
Yes — segmenting your email list is one of the highest-leverage things you can do. A segmented send is targeted...
Read moreTips for creating a newsletter with good content
Good newsletter content respects three things: the subscriber’s time, their inbox and their reason for signing up. Strip out everything...
Read moreHow often should I send email marketing campaigns?
There’s no single right number. The best frequency depends on what you’re sending, who is on your list and how...
Read moreIs Email Marketing Effective?
Yes — and by a wide margin. The latest industry studies put email marketing ROI at around $36 for every...
Read moreDo I need my own domain name to do email marketing?
Strictly speaking, no — you can technically send a Mailpro campaign from a free Gmail or Outlook address. In practice,...
Read moreWhat is a domain name?
A domain name is the human-readable address of a website or email server — like mailpro.com. Behind the scenes the...
Read moreDo I need my phone for using a two-factor authentication?
Short answer: a smartphone is the most common way to receive your Mailpro 2FA codes, but it is not strictly...
Read moreWhat is a two-factor authenticator (2FA)?
A two-factor authenticator (2FA) is a small mobile or browser app that produces a fresh 6-digit code every 30 seconds....
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