The Deliverable Diary

You sent the email. The recipient never got it. Now your dashboard says “hard bounce” or “soft bounce” or, if you’re an SMTP2GO user, possibly “rejected.” Three different statuses, three different causes, three different things you should do about them. Here’s the short version, then the long one. Quick Answer Hard bounce: the email failed […]

Verifying your sender domains just got a whole lot easier! Did you know there are two ways to verify your sender domains? You can set up DNS records manually or choose automatic sender domain verification. The automatic option saves time and simplifies DNS updates, making the process quick and hassle-free. Powered by Entri, this trusted […]

If you’ve ever contacted our support team about an email issue, you may have been asked to provide the full headers. While that can sound technical, it’s actually a normal and helpful request! So, what are headers? Are they dangerous to share? And why do we ask to see them instead of just reading the email itself?! […]

We believe in being limitless wherever we can. But every email service worth trusting has a few guardrails in place, and ours exist for a single reason: to protect the deliverability of every sender on our network. This page is the canonical answer to “what are SMTP2GO’s sending limits?” Bookmark it. We will keep it […]

The intention behind email blocklists is honorable: they’re there to keep our inboxes safe from spam. If you find your domain name or IP address added to one, however, it could seriously harm your deliverability (and make you break down and sob!) BUT it’s not all bad. Learn more about email blocklists and, most importantly, […]

If you’ve ever tried to send a big batch of emails using Outlook, Apple Mail, Thunderbird – or any other standard email app – you already know the struggle! These tools are great for everyday communication – but when it comes to sending to large groups, automations, or personalized campaigns, they simply aren’t built for […]