Questions & answers

MailBlastr is an email platform for developers. Send transactional and marketing emails through a clean REST API or SMTP relay.

Yes. Add any domain you own, then verify DNS records (DKIM, SPF, DMARC) so mailbox providers trust your mail.

Create an API key, verify a domain, and make one POST request to /emails.send — or update your SMTP settings.

Yes. The Free plan includes 3,000 emails per month with no credit card required.

We offer SDKs for Node.js, Python, Go, Ruby, PHP, and .NET. Any language that can make HTTPS requests or send SMTP works.

Yes. MailBlastr provides a drop-in SMTP relay. Update your host, port, username, and password and keep your existing code.

Yes. Send up to 100 emails in a single API call, each fully personalized.

Yes. Pass a scheduledAt timestamp or use natural language like "in 1 hour".

We guide you through domain authentication, monitor IP reputation, automatically suppress bounces, and provide deliverability insights.

A dedicated IP is an IP address used only by your account. Scale plans can add managed dedicated IPs that warm up automatically.

They are tracked automatically and excluded from future sends, keeping your reputation healthy.

Yes. We guide you through setting up BIMI so your logo appears next to your emails in supporting inboxes.

We send events for sent, delivered, opened, clicked, bounced, complained, unsubscribed, and more.

Yes. Each webhook request is signed so you can verify it came from MailBlastr.

Free, Pro, and Scale plans include 30-day log retention. Enterprise plans can choose flexible retention.

Yes. Cancel from your account settings whenever you want and keep your plan through the end of the current billing period.

Paid plans can enable pay-as-you-go for overages. Free plans are paused until the next billing cycle.

If a paid plan isn’t working out, contact us within 30 days of purchase and we’ll sort out a refund.

Yes. Contact us for custom volume, dedicated IPs, SSO, flexible data retention, and SLA-backed support.