Free SMTP Server

Send bulk email

Benefit from an SMTP relay service that’s been set up for the purpose of delivering bulk emails. Unlike the servers used to send a typical email from your Gmail account, our servers are specially configured in a way that supports high-volume sending.

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Top class deliverability

Sendinblue’s free SMTP server is backed by dedicated infrastructure and resources to make sure your emails reach the inbox (and avoid the spam folder).

• Closely monitored shared IPs
• A team of experienced email deliverability experts
• Rigorous validation process to keep spammers out

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Rapid email delivery

Sendinblue’s SMTP server ensures your time-sensitive transactional emails are delivered on time, every time.

• 50% of emails delivered within 1 second
• 99.98% of emails delivered in under 20 seconds

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Trusted sender reputation

Our sender reputation is well established among email clients (Gmail, Outlook, etc.) and we maintain strict control over all our IP addresses. By choosing to send over our free SMTP server, you get to benefit from the deliverability of an established SMTP service provider.

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Send transactional emails

Trust our SMTP relay service to deliver your most important customer updates. Whether it’s account activation emails, order confirmations, shipping notifications, receipts, password resets, or security alerts, we’ve got all your transactional needs covered.

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Send emails from other apps and websites

Just plug our SMTP credentials into another service to have these third-party emails sent through Sendinblue. By sending the emails through Sendinblue, you can take full advantage of our established sending reputation and reporting features.

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Automation workflows

Trigger custom email automation workflows based on user activity and website behavior. Never miss an opportunity to engage.

• Ready-made workflows and templates
• Multi-channel workflows for email & SMS
• Emails triggered by link clicks and visits to your WordPress site or other third party app  

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Analyze email delivery and engagement

Our free SMTP relay server gives access to advanced reporting features so you’ve got the data and insights you need to consistently improve. 

• Real-time delivery rates and performance metrics
• Clear, easy to digest data for rapid analysis
• Custom webhooks for instant updates however you want to receive them

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Protect your sender reputation

Sendinblue offers a number of features to help marketers maintain and protect their sender reputations.

• Hard-bounce pooling to avoid sending any more emails to hard bounce contacts (automatic unsubscribe)
• Dedicated IPs available for high-volume senders on paid plans
• Split transactional and promotional emails into different streams (by sender and IP address)
• Domain name authentication (SPF, DKIM, and DMARC) to validate your sender signature

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