Adding Mail Accounts in Firstsales.io - SMTP

overview this comprehensive guide details how to set up and troubleshoot smtp mail integration with firstsales io smtp configuration requires precise settings and thorough understanding of email server parameters prerequisites email server credentials smtp server details imap access credentials ssl/tls certificates (if applicable) administrative access to your email server basic configuration steps 1\ initial setup log in to firstsales io navigate to "mail accounts" click "add new mail account" select "smtp" option 2\ smtp configuration parameters required fields smtp settings \ email address your full email address \ password smtp authentication password \ smtp port server port number \ smtp host server hostname \ ssl/tls toggle based on server requirements imap settings \ imap username usually your email address \ imap password server authentication password \ imap port default 993 (ssl) or 143 (non ssl) \ imap host server hostname \ ssl/tls recommended for security common smtp server settings gmail smtp host smtp gmail com smtp port 587 (tls) or 465 (ssl) imap host imap gmail com imap port 993 ssl required yes outlook/office 365 smtp host smtp office365 com smtp port 587 imap host outlook office365 com imap port 993 ssl required yes advanced troubleshooting guide 1\ connection issues smtp connection failures verify server settings double check hostname spelling confirm port numbers test with both ssl on/off authentication errors validate credentials check for special characters in password verify account permissions timeout issues check network connectivity verify firewall settings test server response time 2\ ssl/tls problems certificate validation ssl handshake failures verify ssl certificate validity check certificate chain confirm ssl library version protocol mismatches try alternate ports (587/465) match encryption method with port verify tls version compatibility 3\ imap synchronization sync failures authentication verify separate imap credentials check imap specific permissions test connection with telnet folder access check folder permissions verify path separators test with different folder structures 4\ common error codes error 535 authentication failed \ check credentials \ verify 2fa settings \ check app specific password requirements error 554 transaction failed \ check sending limits \ verify ip reputation \ review message content error 421 service not available \ check server status \ verify connection limits \ test alternate servers best practices security always use ssl/tls when available implement strong passwords regular credential rotation monitor authentication logs performance connection pooling maintain optimal connection count implement retry mechanisms set appropriate timeouts rate limiting observe server limits implement sending queues monitor bounce rates emergency fixes quick solutions connection reset clear existing connections restart mail services reset connection pool authentication recovery generate new app passwords reset server credentials clear cached credentials ssl recovery bypass ssl temporarily update ssl certificates reset ssl configuration maintenance checklist daily checks monitor connection status check error logs verify message delivery weekly tasks review authentication attempts check ssl certificate validity monitor sending patterns monthly maintenance rotate credentials update server configurations review security policies