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Email Provider Limits Reference

A reference guide for common SMTP providers, their connection ports, sending limits, and bulk capabilities.

Important Note on SMTP Sending Limits

Exceeding daily SMTP limits can cause temporary or permanent account blocks from your provider. We recommend utilizing bulk SMTP services (like Amazon SES, SendGrid, or Mailjet) for larger marketing campaigns.

Gmail

Standard
SMTP Host smtp.gmail.com
Port (TLS) 587
Daily Limit 500 / day
Target: Transactional / Individual

Google Workspace

Standard
SMTP Host smtp.gmail.com
Port (TLS) 587
Daily Limit 2,000 / day
Target: Transactional / Individual

Outlook

Standard
SMTP Host smtp-mail.outlook.com
Port (TLS) 587
Daily Limit 300 / day
Target: Transactional / Individual

Microsoft 365

Bulk Enabled
SMTP Host smtp.office365.com
Port (TLS) 587
Daily Limit 10,000 / day
Target: High-volume marketing

Zoho Free

Standard
SMTP Host smtp.zoho.com
Port (TLS) 587
Daily Limit 200 / day
Target: Transactional / Individual

Zoho Paid

Bulk Enabled
SMTP Host smtp.zoho.com
Port (TLS) 587
Daily Limit Unlimited
Target: High-volume marketing

Yahoo

Standard
SMTP Host smtp.mail.yahoo.com
Port (TLS) 587
Daily Limit 500 / day
Target: Transactional / Individual

Hostinger Starter

Standard
SMTP Host smtp.hostinger.com
Port (TLS) 587
Daily Limit 500 / day
Target: Transactional / Individual

Hostinger Premium

Bulk Enabled
SMTP Host smtp.hostinger.com
Port (TLS) 587
Daily Limit 1,000 / day
Target: High-volume marketing

Hostinger Business

Bulk Enabled
SMTP Host smtp.hostinger.com
Port (TLS) 587
Daily Limit 3,000 / day
Target: High-volume marketing

GoDaddy

Standard
SMTP Host smtpout.secureserver.net
Port (TLS) 465
Daily Limit 500 / day
Target: Transactional / Individual

Amazon SES

Bulk Enabled
SMTP Host email-smtp.<region>.amazonaws.com
Port (TLS) 587
Daily Limit Quota Based
Target: High-volume marketing

SendGrid

Bulk Enabled
SMTP Host smtp.sendgrid.net
Port (TLS) 587
Daily Limit Plan Based
Target: High-volume marketing

Mailjet

Bulk Enabled
SMTP Host in-v3.mailjet.com
Port (TLS) 587
Daily Limit 200/day (Free), Plan Based (Paid)
Target: High-volume marketing